Gotowe bibliografie tematyczne / LUMINESCENCE MATERIALS

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  3. Książki
  4. Części książek
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Gotowa bibliografia na temat „LUMINESCENCE MATERIALS”

Autor: Grafiati
Data publikacji: 11 września 2023
Data aktualizacji: 18 maja 2024

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Artykuły w czasopismach na temat "LUMINESCENCE MATERIALS"

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Yam, Vivian Wing-Wah. "Molecular design of luminescent metal-based materials". Pure and Applied Chemistry 73, nr 3 (1.01.2001): 543–48. http://dx.doi.org/10.1351/pac200173030543.

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A series of soluble di- and polynuclear transition-metal acetylides with rich luminescence behavior have been designed and successfully isolated. The photophysical and photochemical properties have been studied. Luminescent polynuclear metal complexes have also been obtained based on the metal chalcogenide building block. These high-nuclearity transition-metal chalcogenide complexes have been structurally characterized and shown to display rich luminescence behavior. Various approaches and strategies to design and synthesize luminescent polynuclear metal complexes that may find potential applications as chemosensors and luminescence signalling devices will also be described.
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Tai, Xi Shi. "Preparation and Luminescence Properties of Two Novel Magnesium Complex Materials". Advanced Materials Research 321 (sierpień 2011): 121–24. http://dx.doi.org/10.4028/www.scientific.net/amr.321.121.

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In order to prepare efficient luminescence material, two kinds of novel magnesium luminescence materials were synthesized by the reaction of magnesium chloride with 2-acetyl-1-naphthol-diethylenetriamine (1) and 2-acetyl-1-naphthol-triethylenetetramine (2), respectively. The luminescent properties of two novel magnesium luminescence materials were investigated in solid and in DMSO solutions. The results show that two magnesium luminescence materials have high blue. The DMSO solvent could enhance the luminescence of complex (1), and also quench the luminescence of complex (2).
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Fritzen, Douglas L., Luidgi Giordano, Lucas C. V. Rodrigues i Jorge H. S. K. Monteiro. "Opportunities for Persistent Luminescent Nanoparticles in Luminescence Imaging of Biological Systems and Photodynamic Therapy". Nanomaterials 10, nr 10 (13.10.2020): 2015. http://dx.doi.org/10.3390/nano10102015.

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The use of luminescence in biological systems allows us to diagnose diseases and understand cellular processes. Persistent luminescent materials have emerged as an attractive system for application in luminescence imaging of biological systems; the afterglow emission grants background-free luminescence imaging, there is no need for continuous excitation to avoid tissue and cell damage due to the continuous light exposure, and they also circumvent the depth penetration issue caused by excitation in the UV-Vis. This review aims to provide a background in luminescence imaging of biological systems, persistent luminescence, and synthetic methods for obtaining persistent luminescent materials, and discuss selected examples of recent literature on the applications of persistent luminescent materials in luminescence imaging of biological systems and photodynamic therapy. Finally, the challenges and future directions, pointing to the development of compounds capable of executing multiple functions and light in regions where tissues and cells have low absorption, will be discussed.
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Sami, Hussain, Osama Younis, Yui Maruoka, Kenta Yamaguchi, Kumar Siddhant, Kyohei Hisano i Osamu Tsutsumi. "Negative Thermal Quenching of Photoluminescence from Liquid-Crystalline Molecules in Condensed Phases". Crystals 11, nr 12 (13.12.2021): 1555. http://dx.doi.org/10.3390/cryst11121555.

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The luminescence of materials in condensed phases is affected by not only their molecular structures but also their aggregated structures. In this study, we designed new liquid-crystalline luminescent materials based on biphenylacetylene with a bulky trimethylsilyl terminal group and a flexible alkoxy chain. The luminescence properties of the prepared materials were evaluated, with a particular focus on the effects of phase transitions, which cause changes in the aggregated structures. The length of the flexible chain had no effect on the luminescence in solution. However, in crystals, the luminescence spectral shape depended on the chain length because varying the chain length altered the crystal structure. Interestingly, negative thermal quenching of the luminescence from these materials was observed in condensed phases, with the isotropic phase obtained at high temperatures exhibiting a considerable increase in luminescence intensity. This thermal enhancement of the luminescence suggests that the less- or nonemissive aggregates formed in crystals are dissociated in the isotropic phase. These findings can contribute toward the development of new material design concepts for useful luminescent materials at high temperatures.
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Sharma, Suchinder K., Jinu James, Shailendra Kumar Gupta i Shamima Hussain. "UV-A,B,C Emitting Persistent Luminescent Materials". Materials 16, nr 1 (27.12.2022): 236. http://dx.doi.org/10.3390/ma16010236.

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The nearly dormant field of persistent luminescence has gained fresh impetus after the discovery of strontium aluminate persistent luminescence phosphor in 1996. Several efforts have been put in to prepare efficient, long decay, persistent luminescent materials which can be used for different applications. The most explored among all are the materials which emit in the visible wavelength region, 400–650 nm, of the electromagnetic spectrum. However, since 2014, the wavelength range is extended further above 650 nm for biological applications due to easily distinguishable signal between luminescent probe and the auto-fluorescence. Recently, UV-emitting persistent materials have gained interest among researchers’ due to their possible application in information storage, phototherapy and photocatalysis. In the present review, we summarize these recent developments on the UV-emitting persistent luminescent materials to motivate young minds working in the field of luminescent materials.
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Wang, Yangbo, Yingdong Han, Runfa Liu, Cunping Duan i Huaiyong Li. "Excitation-Controlled Host–Guest Multicolor Luminescence in Lanthanide-Doped Calcium Zirconate for Information Encryption". Molecules 28, nr 22 (16.11.2023): 7623. http://dx.doi.org/10.3390/molecules28227623.

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Efficient control over lanthanide luminescence by regulating excitations offers a real-time and reversible luminescence-managing strategy, which is of great importance and highly desirable for various applications, including multicolor display and information encryption. Herein, we studied the crystal structure, luminescence properties, and mechanisms of undoped and Tb3+/Eu3+-doped CaZrO3 in detail. The intrinsic purple-blue luminescence from host CaZrO3 and the introduced green/red luminescence from guest dopants Tb3+/Eu3+ were found to have different excitation mechanisms and, therefore, different excitation wavelength ranges. This enables the regulation of luminescent color through controlling the excitation wavelengths of Tb3+/Eu3+-doped CaZrO3. Furthermore, preliminary applications for information encryption with these materials were demonstrated using portable UV lamps of 254 and 302 nm. This study not only promotes the development of multicolor luminescence regulation in fixed-composition materials, but also advances the practical applications of lanthanide luminescent materials in visually readable, high-level anti-counterfeiting and information encryption.
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Xie, Dini, Hongshang Peng, Shihua Huang i Fangtian You. "Core-Shell Structure in Doped Inorganic Nanoparticles: Approaches for Optimizing Luminescence Properties". Journal of Nanomaterials 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/891515.

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Doped inorganic luminescent nanoparticles (NPs) have been widely used in both research and application fields due to their distinctive properties. However, there is an urgent demand to improve their luminescence efficiency, which is greatly reduced by surface effects. In this paper, we review recent advances in optimizing luminescence properties of doped NPs based on core-shell structure, which are basically classified into two categories: one is by use of surface coating with nonmetal materials to weaken the influence of surface effect and the other is with metal shell via metal enhanced luminescence. Different materials used to coat NPs are surveyed, and their advantages and disadvantages are both commented on. Moreover, problems in current core-shell structured luminescent NPs are pointed out and strategies furthering the optimization of luminescence properties are suggested.
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Wang, Yu, i Huanrong Li. "Luminescent materials of zeolite functionalized with lanthanides". CrystEngComm 16, nr 42 (2014): 9764–78. http://dx.doi.org/10.1039/c4ce01455c.

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Luminescent materials based on the functionalization of zeolite with lanthanide constitute an intense research topic since they combine the attractive properties of zeolite and unique optical properties of Ln3+ ions. This review highlights the utilization of zeolite as luminescent materials showing tunable luminescence performance, well-organized structures and useful host–guest interactions.
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Huang, Tao, i Bingsuo Zou. "Luminescent Behavior of Sb3+-Activated Luminescent Metal Halide". Nanomaterials 13, nr 21 (29.10.2023): 2867. http://dx.doi.org/10.3390/nano13212867.

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Metal halide perovskites have unparalleled optoelectronic properties and broad application potential and are expected to become the next epoch-making optoelectronic semiconductors. Although remarkable achievements have been achieved with lead halide perovskites, the toxicity of lead inhibits the development of such materials. Recently, Sb3+-activated luminescent metal halide perovskite materials with low toxicity, high efficiency, broadband, large Stokes shift, and emission wavelengths covering the entire visible and near-infrared regions have been considered one of the most likely luminescent materials to replace lead halide perovskites. This review reviews the synthesis, luminescence mechanism, structure, and luminescence properties of the compounds. The basic luminescence properties of Sb3+-activated luminescent metal halide perovskites and their applications in WLED, electroluminescence LED, temperature sensing, optical anti-counterfeiting, and X-ray scintillators are introduced. Finally, the development prospects and challenges of Sb3+-activated luminescent metal halide perovskites are discussed.
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Chiatti, Chiara, Claudia Fabiani i Anna Laura Pisello. "Long Persistent Luminescence: A Road Map Toward Promising Future Developments in Energy and Environmental Science". Annual Review of Materials Research 51, nr 1 (26.07.2021): 409–33. http://dx.doi.org/10.1146/annurev-matsci-091520-011838.

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In recent decades, research on persistent luminescence has led to new phosphors and promising performances. Efforts to improve the quality of phosphors’ afterglow have paved the way toward innovative solutions for many disciplines. However, there are few examples of the implementation of luminescent materials. In addition to providing a general background on persistent luminescence, the techniques used for its analysis, and its multidisciplinary potential in energy and environmental science, this article aims to explain the existing gap between the physical-chemical approach and the effective implementation of luminescent materials in larger-scale applications. It investigates engineering solutions in terms of the possible benefits of luminescence in lighting energy savings and passive cooling of urban surfaces. Finally, this article aims to reduce the abovementioned gap by suggesting what is most needed for the successful application of luminescent materials in the built environment.
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Rozprawy doktorskie na temat "LUMINESCENCE MATERIALS"

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Miller, Paul Francis. "Luminescence studies of molecular materials". Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342250.

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Brooks, Robert. "Ion beam induced luminescence of materials". Thesis, University of Sussex, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391861.

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Rocha, Lucas Alonso [UNESP]. "Materiais meso-estruturados luminescentes". Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/105768.

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Made available in DSpace on 2014-06-11T19:35:07Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-04-12Bitstream added on 2014-06-13T18:46:22Z : No. of bitstreams: 1 rocha_la_dr_araiq.pdf: 3758896 bytes, checksum: 8f9b1dddc8f92a0c77915bd317de357f (MD5)
Partículas esféricas de sílica mesoporosa foram obtidas a partir da síntese “template” pelo processo de pirólise de aerossol. O processo foi otimizado para a obtenção de materiais mesoporosos sem resíduos orgânicos e preparados em uma única etapa, eliminando assim, a longa etapa de remoção do surfactante na metodologia tradicional (tratamento térmico ou extração soxhlet, podendo durar dezenas de horas). A otimização do processo de pirólise de aerossol proposta nesta tese reduziu este tempo para apenas alguns minutos. Os materiais apresentaram uma área superficial (BET) de até 1028 m2 .g-1 , com volume de poros (BJH) de 0,58 cm3 .g-1 . Os difratogramas de raios-X indicaram um alto grau de organização com um arranjo hexagonal de poros, confirmado também pela microscopia eletrônica de transmissão. Além disto, bandas características de grupos orgânicos não foram observadas nos espectros de absorção na região do infra-vermelho para as amostras obtidas acima de 600ºC. Amostras dopadas com íons Eu3+ também foram preparadas durante a tese. A análise por espectroscopia de luminescência, para íons Eu3+ , indicou que o íon está encapsulado nos canais mesoporosos sem prévia modificação química da matriz. Posteriormente, moléculas de 1,10- Fenantrolina foram coordenadas ao íon Eu3+ aumentando a faixa espectral de excitação do íon (efeito antena). Além disto, partículas luminescentes também foram obtidas pela incorporação do complexo Eu(fod)3 ou rodamina-B nos poros das matrizes. Finalmente, testes de recobrimento (core shell, SiO2 mesoporoso-SiO2) das partículas luminescentes foram realizados e os resultados indicaram que independentemente da espessura obtida pelo processo de recobrimento, o grau de organização dos poros e a fotoluminescência não sofreram alterações
Spherical mesoporous silica particles were obtained using the template synthesis by spray pyrolysis process. The process was optimized for the preparation of the mesoporous materials in one-pot route without organic residues, eliminating thus, the long process of removal of the surfactant, usually used in the available methods (heat treatment or soxhlet extraction, which require several hours or days). The one- pot route proposed in this thesis reduced the extraction process to only a several minutes. These materials presented a surface area value (BET) of 1028m2 .g-1 and pore volume (BJH) was 0,58 cm3 .g-1 . The X-ray diffraction patterns and the transmission electronic micrographs show an ordered typical p6mm 2D hexagonal mesostructure. Characteristics bands of organic groups were not observed in the infra-red absorption spectra for the samples obtained at 600ºC. Moreover, SiO2 mesoporous doped with Eu3+ ions were also prepared. Luminescence data suggest that the Eu3+ ions were successful encapsulated into the channels of mesoporous silica without any preliminary chemical modification of the matrix. Moreover, extra ligands such as 1,10-Phenantroline can be further coordinated, increasing the spectral range excitation (antenna effect). Furthermore, luminescent particles were also prepared by the wet impregnation of Eu(fod)3 complex and rhodamine-B molecules. Finally, tests of coating (core shell, SiO2 mesoporous-SiO2) of luminescent particles had been carried through and the The results obtained show spherical shape and the observation of a highly ordered hexagonal array of mesochannels further confirms the 2D hexagonal p6m structure. Luminescence results reveal that rhodamine-B has been successfully encapsulated into the channels of mesoporous particles. Silica coating has been observed in TEM measurements
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Bowmar, Paul. "Optical spectroscopy of novel materials". Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259758.

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Williams, Mark. "Uranium(VI) uptake by geological materials, characterisation by luminescence spectroscopy". Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/uraniumvi-uptake-by-geological-materials-characterisation-by-luminescence-spectroscopy(0220200d-b14b-4ef2-99e0-8d0342701576).html.

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Many of the wastes associated with the nuclear fuel cycle are toxic to the biosphere; advancing the use of high resolution spectroscopy applied to these materials will provide the chemical speciation of the interaction between nuclear waste and geological material, improving confidence in a permanent disposal method and informing clean-up operations. Luminescence spectroscopy of uranyl(VI) is a well-established technique for the molecular speciation of uranium-mineral interactions. This work explores the use of both micro- and macroscopic luminescence spectroscopy to expose uranyl(VI) speciative heterogeneity in a range of minerals which have been exposed to uranyl(VI) salt solutions. A comprehensive review of the available literature on the interaction of uranyl(VI) with a range of geological media is assessed and compared. The review finds considerable ambiguity in the speciation of uranyl(VI) at the mineral water interface. A database reporting the multi parametric luminescence properties of uranyl(VI) with silica gel, quartz, bayerite, boehmite, muscovite, kaolinite and montmorillonite (SWy-2 and STx-1b) is presented and discussed. Although some of the results are consistent with previously reported values, many newly identified species are reported and their identification speculated. Parallel factor analysis is used to deconvolute the excitationemission matrix of uranyl(VI) sorbed to silica gel between pH 3 and pH 10. The results are used to identify the spectroscopic properties of complexes >(SiO)2UO2 and >(SiO)2UO2OH and thus new complexation coefficients (log(K)) for their formation with the silica gel surface are determined, log(K1) = 9.22 ± 0.02 and log(K2) = 3.45 ± 0.01, respectively. The investigation also provides insight into the fundamental properties of uranyl(VI) excitation pathways, which are not yet fully understood. Confocal microscopy and phosphorescent lifetime image mapping (PLIM) is used to expose the sub-micron heterogeneity of uranyl(VI) sorption complexation across mineral surfaces of silica gel, bayerite and montmorillonite (STx-1b). The results suggest that changes in the uranyl(VI) lifetime can be used to observe and understand submicron changes in uranyl(VI) complexation at hitherto unknown temporal resolution.
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Sano, Takeshi. "Charge transport and luminescence control in organic and conjugated materials". Thesis, University of Cambridge, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620333.

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Alexeev, Evgeny. "Hot-carrier luminescence in graphene". Thesis, University of Exeter, 2015. http://hdl.handle.net/10871/18231.

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In this thesis, the effect of the sample properties on the characteristics of the hot carrier luminescence in graphene is investigated. The present work focuses on the two main issues described below. The first issue is the modification effects of near-infrared pulsed laser excitation on graphene. For excitation fluences several orders of magnitude lower than the optical damage threshold, the interaction with ultrafast laser pulses is found to cause a stable change in the properties of graphene. This photomodification also results in a decrease of the hot photoluminescence intensity. The detailed analysis shows that ultrafast photoexcitation leads to an increase in the local level of hole doping, as well as a change in the mechanical strain. The variation of doping and strain are linked with the enhanced adsorption of atmospheric oxygen caused by the distortion of the graphene surface. These findings demonstrate that ultrashort pulsed excitation can be invasive even if a relatively low laser power is used. Secondly, the variation of the hot photoluminescence intensity with the increasing charge carrier density in graphene is investigated. The electro-optical measurements performed using graphene field-effect transistors show a strong dependence of the photoluminescence intensity on the intrinsic carrier concentration. The emission intensity has a maximum value in undoped graphene and decreases with the increasing doping level. The theoretical calculations performed using a refined two-temperature model suggest that the reduction of the photoluminescence intensity is caused by an increase in the hot carrier relaxation rate. The modification of the carrier relaxation dynamics caused by photoinduced doping is probed directly using the two-pulse correlation measurements. The discovered sensitivity of the hot photoluminescence to the intrinsic carrier concentration can be utilised for spatially-resolved measurements of the Fermi level position in graphene samples, offering an advantage in resolution and speed.
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Chen, Thomas D. (Thomas Duhwa). "Energy transfer and luminescence enhancement in Er-doped silicon". Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9536.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1999.
Also issued in pages.
Includes bibliographical references (leaves 143-152).
Er-doped silicon (Si:Er) is a promising light emitting material for silicon microphotonics. A study of Si:Er excitation/de-excitation mechanisms and luminescence enchancement is presented in this thesis. A model based on impurity Auger and nonradiative nmltiphonon transitions (NRl\·IPT) is shown to describe the temperature quenching of the photoluminescence (PL) intensity from 4K to 300K This model asserts that the nonradiative Auger process is mainly responsible for the temperature quenching below lOOK, and NRMPT backtransfer process is mainly responsible for the temperature quenching above lOOK. Junction photocufrei1t · spectmscopy (JPCS) measurements confirmed the existence of a backtransfer mechanism that grows with temperature in accordance to the model. In order to circumvent the onset of nonradiative transitions at higher temperatures, spontaneous emission enhancement in nrnltilayer Si/Si02 microcavities was explored as a means to increase the PL intensity. Because multilayer microcavity structures cannot be constructed using single crystal silicon, Er-doped polysilicon (poly-Si:Er) was developed as a light emitting material for these microcavities. The poly-Si:Er material exhibited a luminescence very similar to that of Er in single crystal silicon. By crystallizing poly-Si:Er from amorphous material and performing a post-anneal hydrogenation, a reasonably high PL intensity, which was limited by the excitation power, was attained. Microacavities with poly-Si:Er were fabricated and measured for the first time. Cavity quality factors of -60-300 were measured, and an Er enhancement of -20x was observed. A -lOx enhancement of a small background emission from the polysilicon was also observed. The observed enhancement factors match well with computed enhancement factors derived from electric field intensity distribution within the microcavity structure. Exploratory work in optical gain from Si:Er waveguides and vertically coupled ring resonntors was conducted. A fiber coupling technique for low temperature waveguide transmission experiments was developed for the gain experiments. The transmission spectrum of a 3-cm long waveguide was measured at temperatures down to 125K. Because the temperature could not be lowered without debonding the fiber, a net gain could not be observed in this particular waveguide. The application of stimulated emission in Si:Er devices is analyzed and discussed.
by Thomas Duhwa Chen.
Ph.D.
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Potter, Mark David George. "Luminescence spectroscopy of CdTe/CdS based photovoltaic devices and associated materials". Thesis, Durham University, 2000. http://etheses.dur.ac.uk/4607/.

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This thesis contains primarily a study of CdTe/CdS heterojunction solar cells^ chiefly using photoluminescence spectroscopy. These solar cells show a good potential for commercial power generation in the near Aiture and are of interest to several major companies. A vital but little understood step in the manufacturing process is: annealing the cells in the presence of chlorine prior to back contact application. Studies are performed on a selection of thin film CdTe/CdS cells subjected to CdCl(_2) anneals of different duration. A chemical bevel etch was used to study the spectra at different depths into the sample and laser intensity arid sarhple temperature variations to identify the mechanisms behind the observed photoluminescence peaks. Evidence was found for the CdCl(_2) anneal promoting sulphur diffusion and subsequent grain boundary passivation in the CdTe, leading to increased minority carrier lifetimes and device efficiencies Attempts to obtain electroluminescence from the CdTe/CdS solar cells were madei By using current pulses electroluminescence was obtained in the 780-850nm range with discernible spectral features. Photoluminescence (PL) studies were also performed on a single crystal of CdTe grown to an unprecedented size of approx. 5 cm diameter at Durham university by a multi-tube seeded vapour method of crystal growth. Much higher resolution spectra were: obtained for this than for the solar cells. Several peaks were identified arid the mechanisms responsible were theorised. By taking slices of the crystal boule the PL spectra at different points-throughout the bulk of the crystal were determined. A series of high quality ion-implanted CdTe crystals were also studied! by intensity and temperature dependent PL in order to obtain a better understanding of the effects of known concentrations of known impurities on the PL spectra of CdTe. Specific PL features associated with certain dopants were observed.
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Balogh, Margareta Cristina. "New luminescent materials, bio-inspired and recyclabe, based on lanthanide complexes". Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEN039.

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L’objectif de ce projet a été de concevoir des matériaux émissifs recyclables à base de lanthanide, en vue de remplacer les oxydes contenus dans les lampes fluoro-compactes (CFLs). Les lanthanides, en particulier l’Eu¹¹¹ et le Tb¹¹¹ ont été les principaux « ingrédients » dans les phosphores à cause de leurs émissions fines dans le rouge et le vert. Les complexes tris-dipicolinate de lanthanides, solubles dans l’eau sont connus pour leurs excellentes propriétés de luminescence, ce qui en fait de bons candidats pour des applications dans le domaine de l’éclairage.Cette thèse décrit l’étude des complexes de tris-dipicolinate d’Eu¹¹¹ et de Tb¹¹¹ sous forme cristalline avec différents contre-cations, ainsi que des systèmes plus complexes comme des co-cristaux ou des de cristaux cœur/coquille. Ces complexes ont également été utilisés comme dopant dans des silices mésostructurées en utilisant une méthode dites de « incipient wet impregnation » (IWI). Les propriétés photophysiques de ces matériaux ont été étudiées en détail et une forte exaltation des propriétés d’émission a été mise en évidence dans les silices. En particulier, l’influence des oscillateurs O-X a été montrée et la détermination du rendement quantique intrinsèque nous a procuré une meilleure compréhension de cette exaltation.La recyclabilité des complexes de lanthanide dans la silice a pu être réalisée avec des bons rendements. Des matériaux, émettant de la lumière blanche ont pu être obtenus en mélangeant des émetteurs rouge, vert et bleu. Le naphtalimide a été choisi comme émetteur bleu. Ainsi, le mélange des complexes d’Eu¹¹¹ et de Tb¹¹¹ et de naphtalimide au sein d’une silice mésoporeuse a conduit à la première génération de matériaux émettant de la lumière blanche et pouvant être facilement recyclés
The objective of this project was to explore recyclable lanthanide based materials suitable for replacing the oxides from compact fluorescent lamps (CFLs). Lanthanides, particularly Eu¹¹¹ and Tb¹¹¹ have been the main “ingredients” in phosphors due to their colour purity and sharp emission in the red and green range of the visible spectrum. Lanthanide tris-dipicolinates are water soluble complexes, known for their excellent photophysical properties which makes them great candidates for lighting. The thesis describes the study of Eu¹¹¹ and Tb¹¹¹ tris-dipicolinate complexes in the crystalline form with different cations, as well as more complex systems like mixed co-crystals and core/shell crystals. The Eu¹¹¹ and Tb¹¹¹ complexes were also used as dopant in mesostructured silica materials via an incipient wetness impregnation method leading to homogeneous materials. The photophysical properties these different materials were thoroughly studied and a significant exaltation of the emission was evidenced in the silica. In particular, the influence of the O-X oscillators was explored and determination of the intrinsec quantum yield gave a clearer image on this exaltation. The recyclability of the lanthanide complexes from the material has been proven with high rates. Finally, white light emitting materials were obtained by mixing red, green and blue emitters. The naphthalimide moiety was chosen as blue emitter and white luminescence was successfully obtained in the solid state and for a silica material, representing a first generation of recyclable white light emitting materials based on lanthanide tris-dipicolinate complexes
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Książki na temat "LUMINESCENCE MATERIALS"

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Krasovit͡skiĭ, B. M. Organic luminescent materials. Weinheim: VCH, 1988.

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N, Mariano Anthony, red. Cathodoluminescence of geological materials. Boston: Unwin Hyman, 1988.

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Blasse, G. Luminescent materials. Berlin: Springer-Verlag, 1994.

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1940-, Reineker P., Vitukhnovsky A i Stefan V, red. Select topics in luminescent materials. La Jolla, CA: Stefan University Press, 2004.

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R, Ronda C., Welker T, Electrochemical Society. Luminescent and Display Materials Division., Electrochemical Society Meeting, International Society of Electrochemistry. Meeting i International Conference on Luminescent Materials (6th : 1997 : Paris, France), red. Luminescent materials: Proceedings of the Sixth International Conference on Luminescent Materials. Pennington, N.J: Electrochemical Society, 1998.

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Kitai, Adrian. Luminescent materials and applications. Hoboken, NJ: John Wiley, 2008.

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1957-, Kitai Adrian, red. Solid state luminescence: Theory, materials, and devices. London: Chapman & Hall, 1993.

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Gaft, Michael, Renata Reisfeld i Gerard Panczer. Modern Luminescence Spectroscopy of Minerals and Materials. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24765-6.

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H, Kitai A., red. Solid state luminescence: Theory, materials and devices. London: Chapman& Hall, 1993.

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Renata, Reisfeld, i Panczer Gérard 1960-, red. Modern luminescence spectroscopy of minerals and materials. Berlin: Springer, 2005.

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Części książek na temat "LUMINESCENCE MATERIALS"

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Aitasalo, T., J. Hölsä, J. C. Krupa, M. Lastusaari i J. Niittykoski. "Persistent Luminescence Materials". W Physics of Laser Crystals, 35–50. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-010-0031-4_3.

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Ray, Brian. "Phosphors and Luminescence". W Electronic Materials, 211–23. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-3818-9_15.

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Song, Dandan, Suling Zhao i Zheng Xu. "Upconversion Luminescent Materials: Properties and Luminescence Mechanisms". W Principles and Applications of Up-converting Phosphor Technology, 1–32. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9279-6_1.

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DenBaars, S. P. "Light emitting diodes: materials growth and properties". W Solid State Luminescence, 263–91. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1522-3_8.

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Liritzis, Ioannis, Ashok Kumar Singhvi, James K. Feathers, Gunther A. Wagner, Annette Kadereit, Nikolaos Zacharias i Sheng-Hua Li. "Luminescence Dating of Archaeological Materials". W Luminescence Dating in Archaeology, Anthropology, and Geoarchaeology, 25–40. Heidelberg: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00170-8_4.

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Barandiarán, Zoila, Jonas Joos i Luis Seijo. "Electron Transfer and Luminescence". W Springer Series in Materials Science, 337–72. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-94984-6_11.

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Matsushita, Junichi, S. Yasumatsu, N. Hosaka, K. Okawa, T. Fujita, Jian Bao Li, Hong Lin i Kwang Bo Shim. "Luminescence Porous Ceramics Using Recycling Glass". W Materials Science Forum, 618–21. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-995-4.618.

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Pagonis, Vasilis. "Dose Response of Dosimetric Materials: Models". W Luminescence Signal Analysis Using Python, 357–76. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-96798-7_14.

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Gaft, Michael, Renata Reisfeld i Gerard Panczer. "Interpretation of Luminescence Centers". W Modern Luminescence Spectroscopy of Minerals and Materials, 221–420. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24765-6_5.

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Hasegawa, Miki, i Yasuchika Hasegawa. "Triboluminescence of Lanthanide Complexes". W The Materials Research Society Series, 105–30. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-0260-6_7.

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AbstractThe photoluminescence of lanthanide complexes originating from f–f transitions is generally sensitized through energy transfer from the ligand to the lanthanide ion in the excited state under UV irradiation. This phenomenon is known as the photo-antenna effect. Luminescence driven by mechanical stimuli, such as tapping or rubbing, is called mechanoluminescence or triboluminescence (TL). In recent years, reports on TL in rare-earth complexes, which have attracted attention as novel luminescent materials that do not require an electrical excitation source, have steadily increased. In this chapter, we focus on triboluminescent lanthanide complexes. Specifically, we introduce the history and detection methods of TL and cite recent examples of materials demonstrating this phenomenon, particularly coordination polymer-like and discrete molecular crystalline lanthanide complexes. Finally, we summarize the application prospects of these complexes as soft crystals.
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Streszczenia konferencji na temat "LUMINESCENCE MATERIALS"

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Fischer, C., M. Woehlecke, T. Volk i N. Rubinina. "Influence of the Damage Resistant Impurities on the UV-Excited Luminescence In LiNbO3". W Photorefractive Materials, Effects, and Devices II. Washington, D.C.: Optica Publishing Group, 1993. http://dx.doi.org/10.1364/pmed.1993.thb.8.

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Weber, Marvin J., J. Wong, R. B. Greegor, F. W. Lytle i D. R. Sandstrom. "Optically detected x-ray absorption spectroscopy of luminescent materials". W OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1989. http://dx.doi.org/10.1364/oam.1989.mgg2.

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X-ray absorption near edge and extended fine structure (EXAFS/XANES) has been observed from luminescence excitation spectra of crystals and glasses using synchrotron radiation. The luminescence may either be intrinsic (recombination radiation from alkaki halides, alkaline earth fluorides, oxides) or from activator ions (rare earths, transition metals, organic dyes) excited directly or indirectly. Core electron excitations of cations and anions in luminescent materials have been investigated in the energy range from the VUV to hard x-rays. Absorption features may appear as an increase or decrease in the luminescence intensity depending on the sample thickness with respect to the x-ray absorption length, observation geometry, and intermediate relaxation processes. For materials with multiple sites, conventional x-ray absorption spectroscopy measures some average of different site populations. Since luminescence spectra vary with the local environment, using optical detection measurements can be both atom specific via the characteristic x-ray absorption edge energy and site and valence specific via the optical wavelength.
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Satterwhite, Melvin B. "Luminescence of some airborne plant materials". W AeroSense '97, redaktorzy Ram M. Narayanan i James E. Kalshoven, Jr. SPIE, 1997. http://dx.doi.org/10.1117/12.277618.

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Sharma, Khushbu, Gurjeet Talwar, S. V. Moharil i K. B. Ghormare. "Luminescence in Ba5Cl6Si2O6:Eu2+". W ADVANCED MATERIALS AND RADIATION PHYSICS (AMRP-2015): 4th National Conference on Advanced Materials and Radiation Physics. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4929183.

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Ton-That, Cuong, Thanh Tung Huynh, Ekaterine Chikoidze, Curtis Irvine, Muhammad Zakria, Yves Dumont, Ferechteh Teherani i in. "Luminescence properties of beta-Ga2O3". W Oxide-based Materials and Devices XII, redaktorzy Ferechteh H. Teherani, David C. Look i David J. Rogers. SPIE, 2021. http://dx.doi.org/10.1117/12.2585041.

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Toh, Kentaro, Tatsuo Shikama, Shinji Nagata, Bun Tsuchiya i Tsunemi Kakuta. "Infrared luminescence of rare earth oxide materials". W Optical Science and Technology, SPIE's 48th Annual Meeting, redaktorzy F. Patrick Doty, H. Bradford Barber i Hans Roehrig. SPIE, 2004. http://dx.doi.org/10.1117/12.509474.

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Meulenkamp, E. A. "Potential tuning of porous silicon luminescence". W IEE Colloquium on Materials for Displays. IEE, 1995. http://dx.doi.org/10.1049/ic:19950979.

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Hudson, Zachary. "Nanosegregation of Luminescence in Hierarchically-Assembled Soft Materials". W Novel Optical Materials and Applications. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/noma.2016.notu2d.5.

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Du, B. X., L. Gu i Yong Liu. "Luminescence in tracking test of polymer insulating materials". W 2008 International Symposium on Electrical Insulating Materials (ISEIM). IEEE, 2008. http://dx.doi.org/10.1109/iseim.2008.4664600.

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Roques-Carmes, Charles, Nicholas Rivera, Ali Ghorashi, Steven E. Kooi, Yi Yang, Zin Lin, Justin Beroz i in. "A general framework for shaping luminescence in materials". W CLEO: QELS_Fundamental Science. Washington, D.C.: OSA, 2021. http://dx.doi.org/10.1364/cleo_qels.2021.fm1l.5.

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Raporty organizacyjne na temat "LUMINESCENCE MATERIALS"

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Yukihara, Eduardo G., Joseph J. Talghader, Luiz G. Jacobsohn i John Ballato. Luminescence Materials as Nanoparticle Thermal Sensors. Fort Belvoir, VA: Defense Technical Information Center, czerwiec 2016. http://dx.doi.org/10.21236/ad1011725.

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Largent, Craig C. Liquid Contact Luminescence from Semiconductor Laser Materials. Fort Belvoir, VA: Defense Technical Information Center, styczeń 1997. http://dx.doi.org/10.21236/ada320372.

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So, Franky. Luminescence in Conjugated Molecular Materials under Sub-bandgap Excitation. Office of Scientific and Technical Information (OSTI), maj 2014. http://dx.doi.org/10.2172/1130750.

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Steckl, Andrew J. Novel Luminescent Material and Processes for Optical Devices. Fort Belvoir, VA: Defense Technical Information Center, kwiecień 1999. http://dx.doi.org/10.21236/ada412709.

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Cahay, Marc M., S. Bandyopadhyay, D. J. Lockwood, N. Koshida i J. P. Leburton. Advanced Luminescent Materials and Quantum Confinement: Proceedings of the International Symposium Held in Honolulu, Hawaii on 18-20 October 1999. Fort Belvoir, VA: Defense Technical Information Center, październik 1999. http://dx.doi.org/10.21236/ada378881.

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