Увійти

Готові списки джерел за темами / Quantum dots glass / Статті в журналах

Щоб переглянути інші типи публікацій з цієї теми, перейдіть за посиланням: Quantum dots glass.

Статті в журналах з теми "Quantum dots glass"

Автор: Grafiati

Опубліковано: 13 квітня 2024

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Ознайомтеся з топ-50 статей у журналах для дослідження на тему "Quantum dots glass".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

Переглядайте статті в журналах для різних дисциплін та оформлюйте правильно вашу бібліографію.

1

Zhang, Jian, and Jia Wei Sheng. "Copper Quantum Dots Formation in a Borosilicate Glass." Journal of Nano Research 32 (May 2015): 66–70. http://dx.doi.org/10.4028/www.scientific.net/jnanor.32.66.

Повний текст джерела

Анотація:

This Borosilicate glass offers superior properties to the ordinary silicate glass. Metallic quantum dots embedded in glass are promising materials which can be used in modern optical devices. However, the introduction of metallic quantum dots into borosilicate glass has not been studied. We investigated the formation of copper quantum dots in Cu-doped borosilicate glass matrix using thermal annealing process. The reductant SnO included in borosilicate glass played an important role in the formation of the metallic quantum dots. Specifically, Cu quantum dots were formed only when SnO content reached at least 0.5 wt% after borosilicate glass was heated at 600 °C for 60min, which was evidenced by the detection of the characteristic absorption band at about 560nm originated from the surface plasmon resonance of Cu nanoparticles. The optimal concentration of SnO was found to be 1.5 wt% and the mean size for the heating-induced Cu quantum dots was calculated to be ~1.7 nm. Our data offer a simple approach to prepare the metallic quantum dots in borosilicate glass matrix and suggest a new type of metallic quantum dots for applications where superior durability, chemical and heat resistance are required.

Стилі APA, Harvard, Vancouver, ISO та ін.

2

Kim, Bok Hyeon, Dong Hoon Son, Seongmin Ju, Chaehwan Jeong, Seongjae Boo, Cheol Jin Kim, and Won-Taek Han. "Effect of Aluminum on the Formation of Silver Metal Quantum Dots in Sol–Gel Derived Alumino-Silicate Glass Film." Journal of Nanoscience and Nanotechnology 6, no. 11 (November 1, 2006): 3399–403. http://dx.doi.org/10.1166/jnn.2006.020.

Повний текст джерела

Анотація:

The effect of aluminum incorporation on silver metal quantum dots formation in the alumino-silicate glass film processed by sol–gel process was investigated. The sol–gel derived glass was coated onto the silica glass plate by spin coating with the mixture solution of tetraethyl orthosilicate (TEOS), C2H5OH, H2O, AgNO3, Al(NO3)3·9H2O, and HNO3 with the molar ratios of Ag/Si = 0.12 and Al/Si varying from 0 to 0.12. The formation of the silver metal quantum dots was confirmed by the measurements of the UV/VISoptical spectra, the X-ray diffraction patterns, and the transmission electron microscope images. While the radius of silver metal quantum dots increased with the increase of aluminum concentration, the concentration of the silver metal quantum dots decreased. The formation of the silver metal quantum dots was found strongly suppressed by incorporation of aluminum ions in the glass. The change in the glass structure due to the aluminum incorporation was investigated by the analysis of the Raman spectra. The silver ions in the glass contributed to form stable (Al:Ag)O4 tetrahedra by pairing with aluminum ions and thus clustering of silver metal quantum dots was hindered.

Стилі APA, Harvard, Vancouver, ISO та ін.

3

Jia, Rui, De-Sheng Jiang, Ping-Heng Tan, and Bao-Quan Sun. "Quantum dots in glass spherical microcavity." Applied Physics Letters 79, no. 2 (July 9, 2001): 153–55. http://dx.doi.org/10.1063/1.1380732.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

4

VERMA, ABHISHEK, P. K. PANDEY, J. KUMAR, S. NAGPAL, P. K. BHATNAGAR, and P. C. MATHUR. "GROWTH DYNAMICS OF II–VI COMPOUND SEMICONDUCTOR QUANTUM DOTS EMBEDDED IN BOROSILICATE GLASS MATRIX." International Journal of Nanoscience 07, no. 02n03 (April 2008): 151–60. http://dx.doi.org/10.1142/s0219581x08005250.

Повний текст джерела

Анотація:

Wide bandgap II–VI semiconductor quantum dots embedded in glass matrix have shown great potential for opto-electronic device applications. The current problem is to achieve low size dispersion, high volume fraction, and better control over the size of the quantum dots in glass matrix. In this work, a modified growth method has been proposed to achieve a greater control over the size of quantum dots, to reduce their size dispersion and to increase their volume fraction. A theoretical model has been developed to quantitatively estimate the various parameters of the quantum dots. The effects of aging on various parameters of quantum dots in Semiconductor-Doped Glass (SDG) samples have also been discussed in the present work.

Стилі APA, Harvard, Vancouver, ISO та ін.

5

Zhao, Weigang, Cuirong Liu, and Xu Yin. "Cs4PbBr6 Combined with Graphite as Anode for High-Performance Lithium Batteries." Metals 12, no. 10 (September 23, 2022): 1584. http://dx.doi.org/10.3390/met12101584.

Повний текст джерела

Анотація:

Cs4PbBr6 quantum dots are glass-based materials. The perovskite structural material of Cs4PbBr6 quantum dots has shown an unexpected electronic performance. However, the glass-based Cs4PbBr6 quantum dots’ capacity becomes weaker when running in charge/discharge. Here, graphite was introduced to Cs4PbBr6 quantum dots using the grinding method to enhance the cycling stability of Cs4PbBr6 quantum dots. The 10%, 25%, 35%, 40%, 75% content Cs4PbBr6 quantum dots were added to graphite (CQDs/G) and CQDs/G as an active material for lithium anode in electronic testing. The test results displayed 35% Cs4PbBr6 quantum dots content in CQDs/G, showing an excellent cycle performance (136.5 mAh g−1 after 1000 cycles at 0.5 A g−1 current density) and good rate ability. Graphite protected the CQDs in the long term, and has high potential economic value.

Стилі APA, Harvard, Vancouver, ISO та ін.

6

Sonawane, R. S., S. D. Naik, S. K. Apte, M. V. Kulkarni, and B. B. Kale. "CdS/CdSSe quantum dots in glass matrix." Bulletin of Materials Science 31, no. 3 (June 2008): 495–99. http://dx.doi.org/10.1007/s12034-008-0077-2.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

7

Kaushik, Diksha, Madhulika Sharma, A. B. Sharma, and R. K. Pandey. "Study of Self-Organized CdS Q-Dots." Journal of Nanoscience and Nanotechnology 8, no. 8 (August 1, 2008): 4303–8. http://dx.doi.org/10.1166/jnn.2008.an38.

Повний текст джерела

Анотація:

Self-organized cadmium sulfide quantum dots assembled using wet synthesis route on glass/ITO as well as Si(100) substrates have been investigated, using X-ray diffraction and transmission electron microscopy. The quantum dots have been shown to grow with a strong (111) orientation with narrow size distribution. Self-organized growth of the quantum dots was examined by high resolution imaging with an atomic force microscope. It is shown that increased self-organization is obtained on silicon substrate. The role of surfactant in imparting self-organization has been invoked to explain the observed morphological features. The as grown Q-dots exhibited size dependent blue shift in the absorption edge. The luminescence behavior of the quantum dots self-organized on glass/ITO as well as Si(100) substrate has also been examined. It is shown that substantial enhancement in luminescence yield is obtained for quantum dots grown on silicon substrate. A model to explain the observed luminescence enhancement has also been presented.

Стилі APA, Harvard, Vancouver, ISO та ін.

8

Kolobkova, E. V., A. V. Polyakova, A. N. Abdrshin, N. V. Nikonorov, and V. A. Aseev. "Nanostructured glass ceramic based on fluorophosphate glass with PbSe quantum dots." Glass Physics and Chemistry 41, no. 1 (January 2015): 127–31. http://dx.doi.org/10.1134/s1087659615010137.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

9

Kuznetsova, M. S., R. V. Cherbunin, V. M. Litvyak, and E. V. Kolobkova. "Spectroscopy of PbS and PbSe quantum dots in fluorine phosphate glasses." Физика и техника полупроводников 52, no. 5 (2018): 497. http://dx.doi.org/10.21883/ftp.2018.05.45841.30.

Повний текст джерела

Анотація:

AbstractTransmission spectra of the narrow-bandgap semiconductor quantum dots PbS and PbSe in the fluorine phosphate glass are experimentally studied at different temperatures. Energies of 1s exciton transitions observed in the absorption spectra are used to determine characteristic sizes of the quantum dots under study. A nontrivial temperature behavior of the ground and excited quantum confined states in the quantum dots of different sizes are observed.

Стилі APA, Harvard, Vancouver, ISO та ін.

10

Yükselici, M. H., Ç. Allahverdi, and H. Athalin. "Zinc incorporation into CdTe quantum dots in glass." Materials Chemistry and Physics 119, no. 1-2 (January 2010): 218–21. http://dx.doi.org/10.1016/j.matchemphys.2009.08.057.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

11

Cheng, Cheng, Huilü Jiang, Dewei Ma, and Xiaoyu Cheng. "An optical fiber glass containing PbSe quantum dots." Optics Communications 284, no. 19 (September 2011): 4491–95. http://dx.doi.org/10.1016/j.optcom.2011.05.004.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

12

Reynoso, V. C. S., Y. Liu, R. F. C. Royas, J. A. Medeiros Neto, A. M. De Paula, C. L. Cesar, O. L. Alves, and L. C. Barbosa. "CdTe quantum dots in Era3+-doped borosilicate glass." Journal of Materials Science Letters 15, no. 21 (January 1996): 1879–81. http://dx.doi.org/10.1007/bf00264084.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

13

Cotter, D., M. G. Burt, and H. P. Girdlestone. "Electroabsorptive behaviour of semiconductor quantum dots in glass." Semiconductor Science and Technology 5, no. 6 (June 1, 1990): 631–33. http://dx.doi.org/10.1088/0268-1242/5/6/032.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

14

Esch, V., G. Khitrova, H. M. Gibbs, Xu Jiajin, L. C. Liu, and S. H. Risbud. "Quantum-confined Franz-Keldysh effect in CdTe quantum dots in glass." Optics News 15, no. 12 (December 1, 1989): 26. http://dx.doi.org/10.1364/on.15.12.000026.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

15

Zhang, Xizhen, Lizhu Guo, Yuhang Zhang, Chuanhui Cheng, Yi Cheng, Xiangping Li, Jinsu Zhang, et al. "Improved photoluminescence quantum yield of CsPbBr 3 quantum dots glass ceramics." Journal of the American Ceramic Society 103, no. 9 (May 28, 2020): 5028–35. http://dx.doi.org/10.1111/jace.17225.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

16

Eskova, A. E., A. I. Arzhanov, K. A. Magaryan, N. A. Koverga, K. R. Karimullin, and A. V. Naumov. "On the impact of the laser radiation wavelength and the concentration of quantum dots on the luminescence spectra of colloid solution and QD-doped nanocomposites." EPJ Web of Conferences 220 (2019): 03014. http://dx.doi.org/10.1051/epjconf/201922003014.

Повний текст джерела

Анотація:

The influence of the concentration and the laser excitation wavelength on the width and luminescence spectrum maximum of CdSe/CdS /ZnS quantum dots in the toluene solution and doped on the glass plate was studied. It was shown that the wavelength of the exciting laser does not affect the width and peak center of the luminescence spectrum of the samples under the study. Possible mechanisms of the quantum dots concentration influence on studied parameters are analyzed.

Стилі APA, Harvard, Vancouver, ISO та ін.

17

ESCH, V., K. KANG, B. FLUEGEL, Y. Z. HU, G. KHITROVA, H. M. GIBBS, S. W. KOCH, N. PEYGAMBARIAN, L. C. LIU, and S. H. RISBUD. "OPTICAL PROPERTIES OF CdTe AND CdS QUANTUM DOTS IN GLASS." Journal of Nonlinear Optical Physics & Materials 01, no. 01 (January 1992): 25–50. http://dx.doi.org/10.1142/s0218199192000030.

Повний текст джерела

Анотація:

We summarize the linear and nonlinear optical properties of a variety of CdTe and CdS quantum dots in glass. The measured linear absorption of the CdTe sample is compared with calculations involving valence-band mixing due to the quantum confinement. The temperature dependence of the lowest quantum-confined transition and its linewidth for samples with various crystallite sizes are measured and compared with a simple model. It is found that the shift of the energetically lowest quantum-confined transition as a function of temperature is the same as the temperature-dependent band-gap reduction in bulk materials. Excitation of the sample with pulses ranging from femtoseconds to microseconds allows distinguishing between various mechanisms responsible for the observed optical nonlinearities. At very early times, phase-space filling and Coulomb interaction between the excited charged carriers are responsible for the absorption changes. At later times, Coulomb effects due to “trapped” carriers remain and last for nanoseconds or microseconds.

Стилі APA, Harvard, Vancouver, ISO та ін.

18

Cao, Thanh Ha, Jong Heo, Yong Kon Kwon, Sanghwa Jeong, and Sungjee Kim. "Photoluminescence from PbS quantum dots and PbS/CdS core/shell quantum dots mixed with As2S3 glass." Journal of Non-Crystalline Solids 431 (January 2016): 76–78. http://dx.doi.org/10.1016/j.jnoncrysol.2015.05.006.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

19

Pang, Xiaoliang, Shuaichen Si, Liqing Xie, Xuejie Zhang, Haozhang Huang, Shuting Liu, Wenxin Xiao, et al. "Regulating the morphology and luminescence properties of CsPbBr3 perovskite quantum dots through the rigidity of glass network structure." Journal of Materials Chemistry C 8, no. 48 (2020): 17374–82. http://dx.doi.org/10.1039/d0tc04498a.

Повний текст джерела

Анотація:

The controlled morphology and luminescence properties of CsPbBr₃ perovskite quantum dots have been successfully achieved in glass through manipulating the rigidity of glass network structure.

Стилі APA, Harvard, Vancouver, ISO та ін.

20

Chaure, Shweta, N. B. Chaure, and R. K. Pandey. "Self-Organized CdSSe Quantum Dots Thin Films." Journal of Nanoscience and Nanotechnology 6, no. 3 (March 1, 2006): 731–37. http://dx.doi.org/10.1166/jnn.2006.101.

Повний текст джерела

Анотація:

Self-organized and strained CdSSe quantum dot (Q-dot) thin films have been grown on ITO-coated glass substrates bynovel wet chemical route. The Q-dots are (002) oriented faceted pyramids with average particle size of 7.5 nm. The X-ray diffraction results reveal the formation of a solid solution of CdSSe. Atomic force microscopy is used to investigate the morphology of the nanocrystalline thin films. The energy dispersive X-ray analysis spectrum confirms the presence of Cd, S, and Se in the films. Optical absorption and photoluminescence spectra show the blue shift for quantum dot thin films.

Стилі APA, Harvard, Vancouver, ISO та ін.

21

Ekimov, A. I. "Optical Properties of Semiconductor Quantum Dots in Glass Matrix." Physica Scripta T39 (January 1, 1991): 217–22. http://dx.doi.org/10.1088/0031-8949/1991/t39/033.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

22

Lipovskii, A. A., E. V. Kolobkova, A. Olkhovets, V. D. Petrikov, and F. Wise. "Synthesis of monodisperse PbS quantum dots in phosphate glass." Physica E: Low-dimensional Systems and Nanostructures 5, no. 3 (December 1999): 157–60. http://dx.doi.org/10.1016/s1386-9477(99)00037-5.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

23

Kratzer, Joseph H., and John Schroeder. "Magnetooptic properties of semiconductor quantum dots in glass composites." Journal of Non-Crystalline Solids 349 (December 2004): 299–308. http://dx.doi.org/10.1016/j.jnoncrysol.2004.08.209.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

24

El-Rabaie, S., T. A. Taha, and A. A. Higazy. "PbTe quantum dots formation in a novel germanate glass." Journal of Alloys and Compounds 594 (May 2014): 102–6. http://dx.doi.org/10.1016/j.jallcom.2014.01.106.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

25

Lu, Shulong, Rui Jia, Desheng Jiang, and Shushen Li. "Lasing of CdSSe quantum dots in glass spherical microcavity." Physica E: Low-dimensional Systems and Nanostructures 17 (April 2003): 453–55. http://dx.doi.org/10.1016/s1386-9477(02)00834-2.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

26

Puls, J., V. Jungnickel, F. Henneberger, and A. Schülzgen. "Carrier dynamics in CdSe quantum dots embedded in glass." Journal of Crystal Growth 138, no. 1-4 (April 1994): 1004–9. http://dx.doi.org/10.1016/0022-0248(94)90946-6.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

27

Yue, Fangyu, Jens W. Tomm, Detlef Kruschke, and Peter Glas. "Stimulated emission from PbS-quantum dots in glass matrix." Laser & Photonics Reviews 7, no. 1 (January 2013): L1—L5. http://dx.doi.org/10.1002/lpor.201200075.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

28

I.Pokutnyi, Sergey, and Wlodzimierz Salejda. "Excitonic quasimolecules in nanosystems containing quantum dots." JOURNAL OF ADVANCES IN CHEMISTRY 12, no. 2 (December 16, 2016): 4018–22. http://dx.doi.org/10.24297/jac.v12i2.2158.

Повний текст джерела

Анотація:

The possibility of occurrence of the excitonic quasimolecule formed of spatially separated electrons and holes in a nanosystem that consists of CuO quantum dots synthesized in a silicate glass matrix. It is shown that the major contribution to the excitonic quasimolecule binding energy is made by the energy of the exchange interaction of electrons with holes and this contribution is much more substantial than the contribution of the energy of Coulomb interaction between the electrons and holes.

Стилі APA, Harvard, Vancouver, ISO та ін.

29

Zenkevich, E., A. Stupak, and C. von Borczyskowski. "Temperature Dependence of Photoluminescence for Spin-Coated Semiconductor Quantum Dots and Quantum Dot-Dye Nanoassemblies on Quartz Substrate." International Journal of Nanoscience 18, no. 03n04 (March 26, 2019): 1940005. http://dx.doi.org/10.1142/s0219581x19400052.

Повний текст джерела

Анотація:

The attachment of pyridyl substituted porphyrin molecule to the surface of CdSe/ZnS quantum dots in solutions is realized in the competition with capping ligand TOPO molecules resulting in the specific change of photoluminescence for the quantum dots across the temperature range of 77–290[Formula: see text]K. We have shown that fixation of alone quantum dots or quantum dot-porphyrin nanoassemblies on quartz substrate changes significantly temperature dependence of photoluminescence. In contrast to the samples in a glass-forming solution no phase transition of the TOPO capping layer was observed upon removal of the capping layer.

Стилі APA, Harvard, Vancouver, ISO та ін.

30

MASUMOTO, YASUAKI. "PERSISTENT SPECTRAL HOLE-BURNING IN SEMICONDUCTOR QUANTUM DOTS." Surface Review and Letters 03, no. 01 (February 1996): 143–50. http://dx.doi.org/10.1142/s0218625x96000292.

Повний текст джерела

Анотація:

The persistent spectral hole-burning (PSHB) phenomenon was observed in semiconductor quantum dots, CdSe , CuCl , and CuBr , embedded in glass and crystal. In inhomogeneously broadened exciton absorption spectra of these dots, the narrow bleaching hole and its associated structure are made by the narrowband laser excitation and are conserved for more than several hours at 2 K after the laser irradiation. The observation of the PSHB phenomenon in these four kinds of samples shows the generality of the phenomenon in semiconductor quantum dots and requires the existence of more than one ground-state configurations of the total system consisting of quantum dots and surrounding matrix. It means that not only the size distribution but also these ground-state configurations give inhomoge-neous broadening to semiconductor quantum dots. Thermally annealing and light-induced hole-filling phenomena were observed. Hole-burning and hole-filling mechanisms are discussed. Quantum dots consisting of 103–104 atoms behave like molecules or ions in matrix to give the PSHB phenomenon.

Стилі APA, Harvard, Vancouver, ISO та ін.

31

Jeong, Sanghwa, Hong Nam Nguyen, Sekyu Hwang, Beomsoo Kim, Jong Heo, and Sungjee Kim. "Preparation of photostable near-infrared luminescent glass with quantum dot-layered double hydroxide composites." Journal of Materials Chemistry C 4, no. 37 (2016): 8624–27. http://dx.doi.org/10.1039/c6tc03142k.

Повний текст джерела

Анотація:

A nanocomposite from near-infrared emitting PbS/CdS core/shell quantum dots and a layered double hydroxide nanoclay was incorporated into an arsenic sulfide glass to represent a highly bright and photostable glass matrix.

Стилі APA, Harvard, Vancouver, ISO та ін.

32

Chen, Daqin, Yue Liu, Changbin Yang, Jiasong Zhong, Su Zhou, Jiangkun Chen, and Hai Huang. "Promoting photoluminescence quantum yields of glass-stabilized CsPbX3 (X = Cl, Br, I) perovskite quantum dots through fluorine doping." Nanoscale 11, no. 37 (2019): 17216–21. http://dx.doi.org/10.1039/c9nr07307h.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

33

Kadim, Akeel M. "Fabrication of Quantum Dots Light Emitting Device by Using CdTe Quantum Dots and Organic Polymer." Journal of Nano Research 50 (November 2017): 48–56. http://dx.doi.org/10.4028/www.scientific.net/jnanor.50.48.

Повний текст джерела

Анотація:

Cadmium telluride CdTe QDs was prepared by chemical reaction and used to fabricate electroluminescence quantum dot hybrid junction device. QD-LED was fabricated using TPD: PMMA/CdTe/Alq3 device which synthesized by phase segregation method. The hybrid white light emitting devices consists, of three-layers deposited successively on the ITO glass substrate; the first layer was of Tetra-Phenyl Diaminobiphenyl (TPD) polymer mixed with polymethyl methacrylate (PMMA) polymers, while the second layer was 0.5wt% of the (CdTe) QDs for hybrid device, whereas the third layer was Tris (8-hydroxyquinoline) aluminium (Alq3). The optical properties of CdTe QDs were considered by UV-Vis. and photoluminescence (PL) spectrometer. The results show that the prepared QDs were nanocrystalline with defects formation. The Eg calculated from PL were 2.25 eV for Cadmium telluride CdTe QDs was prepared by chemical reaction and used to fabricate electroluminescence quantum dot hybrid junction device. QD-LED was fabricated using TPD: PMMA/CdTe/Alq3device which synthesized by phase segregation method. The hybrid white light emitting devices consists, of three-layers deposited successively on the ITO glass substrate; the first layer was of Tetra-Phenyl Diaminobiphenyl (TPD) polymer mixed with polymethyl methacrylate (PMMA) polymers, while the second layer was 0.5wt% of the (CdTe) QDs for hybrid device, whereas the third layer was Tris (8-hydroxyquinoline) aluminium (Alq3). The optical properties of CdTe QDs were measuredby UV-Vis. and photoluminescence (PL) spectrometer. The results show that the prepared QDs were nanocrystalline with defects formation. The Eg calculated from PL were 2.25 eV for CdTe QDs. The generated white light properties with acceptable efficiency using confinement effect that makes the energy gap larger, thus the direction of the light sites are toward the center of white light color. The organic light emitting device (OLED) wasconsidered by room temperature PL and electroluminescence (EL). Current-voltage (I–V) characteristics indicate that the output current is good compared to the few voltage (6 V) used which gives good results to get a generation of white light. The electroluminescence (EL) spectrum of hybrid deviceshows a wide emission band covering the range from 350 - 700 nm. The emissions causing this white luminescence were identified depending on the chromaticity coordinates (CIE 1931) was found (x=0.32, y=0.33). The correlated color temperature (CCT) was found to be about 5886 K. Fabrication of EL-devices from semiconductors material (CdTe QDs) between two layers organic polymer (TPD) and organic molecules (Alq3) were effective in white light generation. The recombination processes and I-V characteristics gives rises to the output current is good compared to the few voltages used which gives good results to become a generation of light.

Стилі APA, Harvard, Vancouver, ISO та ін.

34

Silva Filho, José Maria C. da, Victor A. Ermakov, Luiz G. Bonato, Ana F. Nogueira, and Francisco C. Marques. "Self-Organized Lead(II) Sulfide Quantum Dots Superlattice." MRS Advances 2, no. 15 (2017): 841–46. http://dx.doi.org/10.1557/adv.2017.246.

Повний текст джерела

Анотація:

ABSTRACTWe show that superlattice (SL) of PbS quantum dots (QD) can be easily prepared by drop casting of colloidal QD solution onto glass substrate and the ordering level can be controlled by the substrate temperature. A QD solution was dropped on glass and dried at 25, 40, 70 and 100°C resulting in formation of different SL structures. X-ray diffractograms (XRD) of deposited films show a set of sharp and intense peaks that are higher order satellites of a unique peak at 1.8 degrees (two theta), which corresponds, using the Bragg’s Law, to an interplanar spacing of 5.3 nm. The mean particles diameter, calculated through the broadening of the (111) peak of PbS using the Scherrer’s formula, were in agreement with the interplanar spacing. Transmission electron microscopy (TEM) measurements were also used to study the SL structure, which showed mainly a face centered cubic (FCC) arrangement of the QD. The photoluminescence (PL) spectrum of QD in the SL showed a shift toward lower energy compared to one in solution. It can be attributed to the fluorescence resonant energy transfer (FRET) between neighbors QD´s. Moreover, we observed greater redshift of PL peak for film with lower drying temperature, suggesting that it has a more organized structure.

Стилі APA, Harvard, Vancouver, ISO та ін.

35

Samartsev, Vitaly, Tatiana Mitrofanova, and Alexander Saiko. "Incoherent exciton echo on the CdSe/CdS/ZnS semiconductor quantum dots." EPJ Web of Conferences 220 (2019): 03023. http://dx.doi.org/10.1051/epjconf/201922003023.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

36

Ando, Masanori, Chie Hosokawa, Ping Yang, and Norio Murase. "Electroluminescence of Hybrid Self-Organised Fibres Incorporating CdTe Quantum Dots." Australian Journal of Chemistry 65, no. 9 (2012): 1257. http://dx.doi.org/10.1071/ch12127.

Повний текст джерела

Анотація:

We demonstrated electroluminescence from hybrid 1D glass fibres incorporating CdTe quantum dots with a thin SiO2 overlayer which contains CdS-like clusters. The self-organised fibres, prepared by refluxing precursor nanowires, exhibited red electroluminescence on Au interdigitated array electrodes at room temperature. Although fluctuation with time was observed in the electroluminescence, relatively low threshold electric field (2.6 × 106 V m–1) suggests that the CdTe quantum dots-based hybrid fibres are expected to be applied to low voltage driven electroluminescent devices.

Стилі APA, Harvard, Vancouver, ISO та ін.

37

Du, Ying, Lu Deng, and Danping Chen. "Ag Nanocluster-Enhanced Scintillation Properties of Borophosphate Glasses Doped with CsPbBr3 Quantum Dots." Materials 15, no. 15 (July 26, 2022): 5187. http://dx.doi.org/10.3390/ma15155187.

Повний текст джерела

Анотація:

A novel and effective method to improve scintillation properties of glass-ceramics, such as intensity enhancement and decay-time shortening, is reported in this work. Compared with crystal scintillators, glass scintillators always have the problems of low efficiency and long decay; how to solve them has always been a scientific puzzle in the field of scintillation glass-ceramics. The plasma enhancement effect can be predicted to solve the above problems. Ag+ ions were diffused into glasses by ion exchange, and then Ag nanoparticles and CsPbBr3 quantum dots were formed by heat treatment. The structure of the CsPbBr3 perovskite consists of a series of shared corner PbBr6 octahedra with Cs ions occupying the cuboctahedral cavities. By using Ag and the plasma resonance effect, the photoluminescence intensity of CsPbBr3 quantum dot glasses was enhanced by 3 times, its radioluminescence intensity increased by 6.25 times, and its decay time was reduced by a factor of more than one. Moreover, the mechanism of photoluminescence and radioluminescence enhanced by Ag and plasma was discussed based on the experimental results and finite-difference time-domain method. We concluded that the increase in radioluminescence intensity was related to plasma enhancements and the energy exchange between Ag nanoclusters and CsPbBr3 quantum dots. Doping Ag is a valid means to improve the scintillation luminescence of CsPbBr3 quantum dot glasses, which can be applied in the field of scintillation.

Стилі APA, Harvard, Vancouver, ISO та ін.

38

Koç, Kenan, Fatma Z. Tepehan, and Galip G. Tepehan. "Preparation and Characterization of Self-Assembled Thin Film of MPS-Capped ZnS Quantum Dots for Optical Applications." Journal of Nanomaterials 2012 (2012): 1–7. http://dx.doi.org/10.1155/2012/571315.

Повний текст джерела

Анотація:

For this study, we prepared colloidal ZnS quantum dots using 3-mercaptopropyltrimethoxysilane (MPS) as the capping agent. Colloidal ZnS quantum dots were directly deposited on glass substrates by a spin coating process. Therefore, self-assembled films made of ZnS quantum dots in a SiO2network were obtained using only one production step. The films were heat-treated at 100°, 125°, 150°, 175° and 200°C in an N2atmosphere. The results showed that the dimension of quantum dots changed from 2.8 nm to 3.2 nm by heat treatment. The refractive index, extinction coefficient, thickness, and dielectric coefficient values of the films were calculated. The present study showed that size and the refractive indices of films can be controlled by the heat treatment. Therefore, such films can be a good candidate in optical filter applications.

Стилі APA, Harvard, Vancouver, ISO та ін.

39

Duan, Yongmin, Panpan Li, Yang Lu, Shiqing Xu, and Junjie Zhang. "Origin of bimodal luminescence in Cs4PbBr6 quantum dots glass ceramic." Ceramics International 47, no. 10 (May 2021): 13381–90. http://dx.doi.org/10.1016/j.ceramint.2021.01.195.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

40

Krasovskii, V. I., and S. I. Rasmagin. "Induced Birefringence in CdSe Quantum Dots in Phosphate Glass Matrix." Optics and Spectroscopy 129, no. 1 (January 2021): 102–9. http://dx.doi.org/10.1134/s0030400x21010112.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

41

Zhang, Xizhen, Mengqi Lin, Lizhu Guo, Yuhang Zhang, Chuanhui Cheng, Jiashi Sun, Yi Cheng, et al. "Long-wavelength pass filter using green CsPbBr3 quantum dots glass." Optics & Laser Technology 138 (June 2021): 106857. http://dx.doi.org/10.1016/j.optlastec.2020.106857.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

42

Allahverdi, Ç., and M. H. Yukselici. "Time-dependent volume fraction of CdTe quantum dots in glass." Physica Scripta 78, no. 1 (July 2008): 015702. http://dx.doi.org/10.1088/0031-8949/78/01/015702.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

43

Faraci, G., A. R. Pennisi, and A. Balerna. "SnO $ \mathsf {_2}$ quantum dots confined in a glass matrix." European Physical Journal B - Condensed Matter 30, no. 3 (December 1, 2002): 393–98. http://dx.doi.org/10.1140/epjb/e2002-00394-3.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

44

Lipovskii, A., E. Kolobkova, V. Petrikov, I. Kang, A. Olkhovets, T. Krauss, M. Thomas, et al. "Synthesis and characterization of PbSe quantum dots in phosphate glass." Applied Physics Letters 71, no. 23 (December 8, 1997): 3406–8. http://dx.doi.org/10.1063/1.120349.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

45

Silva, R. S., P. C. Morais, A. M. Alcalde, Fanyao Qu, A. F. G. Monte, and N. O. Dantas. "Optical properties of PbSe quantum dots embedded in oxide glass." Journal of Non-Crystalline Solids 352, no. 32-35 (September 2006): 3522–24. http://dx.doi.org/10.1016/j.jnoncrysol.2006.03.114.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

46

Auxier, Jason M., Michael M. Morrell, Brian R. West, Seppo Honkanen, Axel Schülzgen, Nasser Peyghambarian, Sabyasachi Sen, and Nicholas F. Borrelli. "Ion-exchanged waveguides in glass doped with PbS quantum dots." Applied Physics Letters 85, no. 25 (December 20, 2004): 6098–100. http://dx.doi.org/10.1063/1.1839284.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

47

Demourgues, A., G. N. Greaves, R. Bilsborrow, G. Baker, A. Sery, and B. Speit. "XAFS study of CdSe quantum dots in a silicate glass." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 97, no. 1-4 (May 1995): 166–68. http://dx.doi.org/10.1016/0168-583x(94)00712-8.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

48

Chang, Jieun, Chao Liu, and Jong Heo. "Optical properties of PbSe quantum dots doped in borosilicate glass." Journal of Non-Crystalline Solids 355, no. 37-42 (October 2009): 1897–99. http://dx.doi.org/10.1016/j.jnoncrysol.2008.12.019.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

49

Xue, Junpeng, Xiangfu Wang, Jung Hyun Jeong, and Xiaohong Yan. "Fabrication, photoluminescence and applications of quantum dots embedded glass ceramics." Chemical Engineering Journal 383 (March 2020): 123082. http://dx.doi.org/10.1016/j.cej.2019.123082.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

50

Ahmadpour, Hamidreza, and Seyed Mohamadreza Milani Hosseini. "A molecularly imprinted modified CdSeS/ZnS core–shell quantum dot embedded glass slide for highly selective and sensitive solid phase optosensing of trace amounts of lidocaine in biological samples." Analytical Methods 11, no. 6 (2019): 851–59. http://dx.doi.org/10.1039/c8ay02482k.

Повний текст джерела

Анотація:

An optosensing material based on surface functionalization of a glass slide with quantum dots (QDs) and molecularly imprinted polymer (glass slide@QDs@MIP) with unique optical properties of QDs and selective recognition of MIPs was fabricated for the determination of lidocaine in biological samples.

Стилі APA, Harvard, Vancouver, ISO та ін.

Ми пропонуємо знижки на всі преміум-плани для авторів, чиї праці увійшли до тематичних добірок літератури. Зв'яжіться з нами, щоб отримати унікальний промокод!