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Journal articles on the topic 'LED's'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Stevenson, Richard. "The LED's dark secret." IEEE Spectrum 46, no. 8 (2009): 26–31. http://dx.doi.org/10.1109/mspec.2009.5186552.

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2

Siegel, Stephen. "Curing with UV LED's." NIP & Digital Fabrication Conference 19, no. 1 (2003): 365. http://dx.doi.org/10.2352/issn.2169-4451.2003.19.1.art00085_1.

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3

Fernandes, Tiago V., Luís P. Gonçalves, and Rodrigo Rito. "From light emission to solar power: Experiment on LED's photovoltaic behavior." American Journal of Physics 93, no. 5 (2025): 422–29. https://doi.org/10.1119/5.0252410.

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An experimental study to investigate the fundamental similarities between light-emitting diodes (LEDs) and solar cells (SCs) for educational purposes is here presented. Through a hands-on experiment using inexpensive, commercially available LEDs and simple laboratory equipment, students are introduced to characterization techniques, such as electroluminescence (EL) and current–voltage (I–V) measurements, as well as to optoelectronic devices, photovoltaic physics, spectroscopy, light-to-matter interactions, and solid-state physics concepts. Four LEDs of different colors—red, amber, green, and b

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4

Bhoomika V., Bhuvana B., Harsha B.S., et al. "Development of music rhythm based LED’s in a circular fashion." international journal of engineering technology and management sciences 6, no. 6 (2022): 310–13. http://dx.doi.org/10.46647/ijetms.2022.v06i06.052.

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In this paper, we present the development of music rhythm based LED’s in a circular fashion. This article provides a concise overview of the mini project work that we undertook, which involved the design and development of the Music Rhythm LEDs. The primary goal of our project is to create Music Rhythm LEDs that can be used for DJ lights, disco lights, or lighting during a party and that turn ON and OFF in time with the beats or rhythm of the music. A microphone and BC547 on a PCB can be used to create this Music Rhythm LED's Circuit, which will cause the led to flash in time with the music. T

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5

Dabulytė, Jurgita, Feliksas Ivanauskas, and Artūras Žukauskas. "The modeling of LED's disposition." Lietuvos matematikos rinkinys 44 (December 17, 2004): 703–7. http://dx.doi.org/10.15388/lmr.2004.32236.

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The goal of this work is to construct the scheme of constructing light – emitting diodes system. The mathematical model was written for a light-emitting diodes lamp. The finite difference technique was used for the discretization of mathematical model.

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6

Gebauer, T., and G. Schmid. "Inorganic-organic Hybrid Structured LED's." Zeitschrift für anorganische und allgemeine Chemie 625, no. 7 (1999): 1124–28. http://dx.doi.org/10.1002/(sici)1521-3749(199907)625:7<1124::aid-zaac1124>3.0.co;2-t.

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7

Ayabe, Takahiro, Kenji Honma, Hironobu Kiyomoto, and Takashi Tsutsumi. "Development of Lighting Sources using LED's." JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN 87, Appendix (2003): 186. http://dx.doi.org/10.2150/jieij1980.87.appendix_186.

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8

Kijima, Y., N. Asai, N. Kishii, and S. I. Tamura. "RGB luminescence from passive-matrix organic LED'S." IEEE Transactions on Electron Devices 44, no. 8 (1997): 1222–28. http://dx.doi.org/10.1109/16.605458.

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9

Faranda, Roberto, Stefania Guzzetti, George Cristian Lazaroiu, and Sonia Leva. "Refrigerating liquid prototype for LED's thermal management." Applied Thermal Engineering 48 (December 2012): 155–63. http://dx.doi.org/10.1016/j.applthermaleng.2012.05.018.

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10

Antoniadis, Homer, Mark R. Hueschen, Jeffrey N. Miller, Ronald L. Moon, Daniel B. Roitman, and James R. Sheats. "Failure modes in vapor-deposited organic led's." Macromolecular Symposia 125, no. 1 (1998): 59–67. http://dx.doi.org/10.1002/masy.19981250104.

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11

Manisha, Singh. "LUMINESCENT MATERIALS FOR COMMUNICATION DEVICES: AN OVERVIEW." INTERNATIONAL JOURNAL OF ENGINEERING TECHNOLOGIES AND MANAGEMENT RESEARCH 5, no. 2 :SE (2018): 96–100. https://doi.org/10.5281/zenodo.1200262.

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The luminescent material is microcrystalline powders or thin-films designed to provide visible colour emission on excitation by different sources. These are also called phosphors they can be developed in to a potential candidate for applications like Solar cell device, LEDs, Display devices.etc.  Present paper is an Review of the phosphors materials for Light emitting devices (LED), their present status and challenges.

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12

Hase, Mangesh, Paras Bhanushali, Parth Vora, Prerna Goswami, and M. A. K. Kerawalla. "Li-Fi-Technology: LED's to Access the Internet!" Invertis Journal of Science & Technology 11, no. 4 (2018): 189. http://dx.doi.org/10.5958/2454-762x.2018.00024.0.

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13

Van Roy, W., P. Van Dorpe, J. De Boeck, and G. Borghs. "Spin injection in LED's and in unipolar devices." Materials Science and Engineering: B 126, no. 2-3 (2006): 155–63. http://dx.doi.org/10.1016/j.mseb.2005.09.021.

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14

Oelgart, G., R. Stegmann, and D. Kaatsch. "The local distribution of luminescence generation in LED's." Crystal Research and Technology 20, no. 11 (1985): 1467–74. http://dx.doi.org/10.1002/crat.2170201108.

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15

Scholz, Ferdinand, Thomas Wunderer, Barbara Neubert, Martin Feneberg, and Klaus Thonke. "GaN-Based Light-Emitting Diodes on Selectively Grown Semipolar Crystal Facets." MRS Bulletin 34, no. 5 (2009): 328–33. http://dx.doi.org/10.1557/mrs2009.95.

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AbstractIn this article, we briefly review a particular approach to fabricate light-emitting diode (LED) structures on the semipolar side facets of triangular GaN stripes grown by selective area epitaxy. This approach enables a significant reduction of the internal piezoelectric fields in the LED's active area, while still maintaining the well-established c-direction as the main epitaxial growth direction for GaN-based devices on large area substrates. For the latter, these internal fields are responsible for the lower efficiency of GaN-based LEDs in the longer (green) wavelength range. The re

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16

Miyagawa, H., R. Satoh, Y. Iwata, E. Morinaga, and S. Kamo. "Study on Thermal Proof of SnO2 Protection Thin Film for Ultra High Reflective Film Ag System." International Symposium on Microelectronics 2010, no. 1 (2010): 000458–61. http://dx.doi.org/10.4071/isom-2010-wa3-paper5.

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Because it has longer life and uses much less power than filament lighting, LED is expected to be the next-generation lighting device. Moreover, taking advantage of its special properties, LED's are not limited to general lighting. There have been advances in the application of LED's to LCD's and car headlamps. To raise the luminosity efficiency of LED's, the metallic reflective film with the highest reflectivity is used. As a reflective film material, Ag has the highest reflectivity in the visual light range (400–800nm) and is used in many cases. However, Ag is a thermally active material and

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17

Xia, Tianwen, Yongzhen Liu, Zhonghang Huang, et al. "3.1: Invited Paper: Improving the front emission of Micro‐LED by using a sidewall light guide structure." SID Symposium Digest of Technical Papers 54, S1 (2023): 32–36. http://dx.doi.org/10.1002/sdtp.16213.

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Micro‐LED is one of the most promising display devices, which has Micron‐sized inorganic structure. The miniaturized size of Micro‐LED leads to a large amount of sidewall emission, which causes crosstalk for display devices. To solve the problem, this paper proposes a novel Micro‐LED structure by designing a sidewall light guide structure where SiO2 and TiO2 layers are successively added to the Micro‐LED's sidewall to form a total reflection layer. Thereby, large part of the light emitting from sidewall can be guided to the front of this structure. The simulation results show that RGB Micro‐LE

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18

Yang, Chiu-Lien, Chih-Lung Lin, Hong-Sheng Hsieh, et al. "11‐4: Invited Paper: Advanced Augmented Reality Head‐Up Display Utilizing Micro LED Display Technology." SID Symposium Digest of Technical Papers 55, no. 1 (2024): 115–18. http://dx.doi.org/10.1002/sdtp.17467.

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This article presents an AR HUD using micro LED technology for enhanced brightness and image quality. It utilizes micro LED's high brightness to merge AR images seamlessly with external views and employs Nature 3D technology to improve the HUD's 3D depth, significantly boosting vehicle safety.

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19

Ge, Peng, Peipei Yin, Hong Wang, and Tianhai Chang. "Image matching technology in high power LED's eutectic welding." Optics Express 22, no. 11 (2014): 13531. http://dx.doi.org/10.1364/oe.22.013531.

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20

Grot, A. C., D. Psaltis, K. V. Shenoy, and C. G. Fonstad. "Integration of LED's and GaAs circuits by MBE regrowth." IEEE Photonics Technology Letters 6, no. 7 (1994): 819–21. http://dx.doi.org/10.1109/68.311465.

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21

Chiu, Y. C., and C. Bayram. "Low temperature absolute internal quantum efficiency of InGaN-based light-emitting diodes." Applied Physics Letters 122, no. 9 (2023): 091101. http://dx.doi.org/10.1063/5.0142701.

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A method to reveal low temperature absolute internal quantum efficiency of an InGaN-based light-emitting diode (LED) is reported. Structural (via scanning electron and atomic force microscopies, x-ray diffraction, and Raman spectroscopy) and optical (via temperature- and power-dependent photoluminescence) properties of InGaN-based blue LEDs are coupled with a channel-based recombination model, which reveals the low temperature absolute internal quantum efficiency of the LED on traditional sapphire and emerging Si (111) substrates as 27.5% and 71.1%, respectively. High low-temperature absolute

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22

Yoo, Jae-In, Hyobin Kim, Sung-Cheon Kang, et al. "P‐162: Late‐News Poster: Analysis of Various solvents for Hole Transport Layer in Tandem Structure Quantum Dot Light Emitting Diode." SID Symposium Digest of Technical Papers 54, no. 1 (2023): 1766–69. http://dx.doi.org/10.1002/sdtp.16946.

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To achieve high‐resolution display, dual color tandem quantum dot light emitting diodes (QD‐LED) could be candidate. This tandem QD‐LED's characteristics affected by interface of emission layer (EML)/hole transport layer (HTL) and thickness of electron transport layer (ETL). In this research, we analyzed various solvents for HTL and modulated ETL thickness.

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23

EGUCHI, KEI. "DESIGN OF A DUAL-INPUT SERIAL DC–DC CONVERTER REALIZING INDIVIDUAL SWITCHING MODES." Journal of Circuits, Systems and Computers 20, no. 06 (2011): 1075–94. http://dx.doi.org/10.1142/s0218126611007773.

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To drive a white light-emitting diode (LED) in portable devices, a dual-input serial DC–DC converter realizing individual switching modes is proposed in this paper. Unlike conventional single-input converters, the proposed converter provides output voltage by converting not only battery energy but also solar energy. Therefore, the proposed converter can suppress energy consumption of a battery. Furthermore, in the proposed converter, the -1/m× stepped-down voltage (m = 1,2,…,N) is generated to drive LED's cathode only when the voltage of solar-cells is insufficient to drive 1 × transfer mode.

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24

Kashima, Y., A. Matoba, and H. Takano. "Linear InGaAsP edge-emitting LED's for single-mode fiber communications." Journal of Lightwave Technology 10, no. 11 (1992): 1650–55. http://dx.doi.org/10.1109/50.184904.

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25

Silvero, María Jazmín, Gerardo Aníbal Argüello, and María Cecilia Becerra. "Photodynamic Antibacterial Chemoterapy (PACT) Using Gold Nanoparticles and LED's Irradiation." Journal of Nanopharmaceutics and Drug Delivery 2, no. 2 (2014): 148–52. http://dx.doi.org/10.1166/jnd.2014.1048.

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26

Bockstaele, R., C. Sys, J. Bondelle, et al. "Resonant cavity LED's optimized for coupling to polymer optical fibers." IEEE Photonics Technology Letters 11, no. 2 (1999): 158–60. http://dx.doi.org/10.1109/68.740689.

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27

Guo, Shanshan, Hanting Gu, Lan Wu, and Shuixiu Jiang. "Energy-Saving Tunnel Illumination System Based on LED's Intelligent Control." Journal of Physics: Conference Series 276 (February 1, 2011): 012164. http://dx.doi.org/10.1088/1742-6596/276/1/012164.

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28

De Neve, H., J. Blondelle, R. Baets, P. Demeester, P. Van Daele, and G. Borghs. "High efficiency planar microcavity LED's: comparison of design and experiment." IEEE Photonics Technology Letters 7, no. 3 (1995): 287–89. http://dx.doi.org/10.1109/68.372748.

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29

Kuo-Liang Chen and D. Kerps. "Coupling efficiency of surface-emitting LED's to single-mode fibers." Journal of Lightwave Technology 5, no. 11 (1987): 1600–1604. http://dx.doi.org/10.1109/jlt.1987.1075446.

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30

Rocha, Paulo Sérgio Gomes da, Diogo Vitale Canova, and Gabriela Ambros Girelli. "HYDROPONIC CULTURE OF CRESS UNDER DIFFERENT LIGHT INTENSITIES WITH LED'S." Journal of Agricultural Sciences Research (2764-0973) 3, no. 6 (2023): 2–9. http://dx.doi.org/10.22533/at.ed.973362327049.

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31

Choi, H. K., G. W. Turner, T. H. Windhorn, and Bor-Yeu Tsaur. "Monolithic integration of GaAs/AlGaAs double-heterostructure LED's and Si MOSFET's." IEEE Electron Device Letters 7, no. 9 (1986): 500–502. http://dx.doi.org/10.1109/edl.1986.26452.

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32

Liu, Mu-Qing, Xiao-Li Zhou, Wen-Yi Li, Yu-Yang Chen, and Wan-Lu Zhang. "Study on methodology of LED's luminous flux measurement with integrating sphere." Journal of Physics D: Applied Physics 41, no. 14 (2008): 144012. http://dx.doi.org/10.1088/0022-3727/41/14/144012.

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33

Kot, M., and K. Zdansky. "Measurement of radiative and nonradiative recombination rate in InGaAsP-InP LED's." IEEE Journal of Quantum Electronics 28, no. 8 (1992): 1746–50. http://dx.doi.org/10.1109/3.142567.

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34

MURUGAIYAN, GANGA, JASMINE GNANAMALAR, MUTHUKUMARAN NARAYANAPERUMAL, and VELUCHAMY MUTHUVEL. "RED FOX-BASED FRACTIONAL ORDER FUZZY PID CONTROLLER FOR SMART LED DRIVER CIRCUIT." REVUE ROUMAINE DES SCIENCES TECHNIQUES — SÉRIE ÉLECTROTECHNIQUE ET ÉNERGÉTIQUE 68, no. 4 (2023): 395–400. http://dx.doi.org/10.59277/rrst-ee.2023.4.12.

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Recently, traditional lighting has been replaced by high-power LED (HPLED) due to its significant developments, prolonged lifetime, high brightness, high reliability, and high energy efficiency. Even though conventional converters can precisely match each LED's current, they have some limitations when driving a long string of LEDs. To solve this issue, this paper presents a novel red fox optimized fractional order fuzzy PID Controller (RF-FOFPID) based high gain improved transformerless dc-dc (ITDC) boost converter for a smart LED driver circuit with optimal voltage regulation capability. The

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35

Li, De Sheng, Nian Yu Zou, Yun Cui Zhang, Xiao Yang He, and Yi Yang. "Study of High-Power White LED's Lifetime Based on Accelerated Life Test." Advanced Materials Research 800 (September 2013): 205–9. http://dx.doi.org/10.4028/www.scientific.net/amr.800.205.

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The study of LED reliability becomes more and more important with LED widely used in various areas, and accelerated life test (ALT) as an element of reliability test is widely used to predict the lifetime of LED. In this paper, ALTs have been carried out at various current levels and various temperature levels. In the current ALT experiment, three kinds of stressing currents were demonstrated for 1W white LEDs and lumen flux of the tested LEDs were studied, and based on Eyting model, lifetime of the tested LEDs is calculated about 6.86×105h. In the temperature ALT experiment, two kinds of stre

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36

Popovic, Z. D., S. Xie, N. Hu, et al. "Life extension of organic LED's by doping of a hole transport layer." Thin Solid Films 363, no. 1-2 (2000): 6–8. http://dx.doi.org/10.1016/s0040-6090(99)00970-0.

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37

Ozuturk, Erdem. "Formulation of the LED's radiant power⿿current characteristic at pulsed high currents." Optik - International Journal for Light and Electron Optics 124, no. 18 (2013): 3549–53. http://dx.doi.org/10.1016/j.ijleo.2012.10.056.

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38

Matyáš, M. "Deep levels and processes in the course of degradation of GaP:N LED's." physica status solidi (a) 97, no. 1 (1986): 297–305. http://dx.doi.org/10.1002/pssa.2210970129.

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39

Allen, J. W., and Hermann G. Grimmeiss. "Visible Light-Emitting Diodes - The Formative Years." Materials Science Forum 590 (August 2008): 1–16. http://dx.doi.org/10.4028/www.scientific.net/msf.590.1.

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A brief history of visible light-emitting diodes (LED's) is given, from the first experimental observations of H.J.Round in 1907 to the mid-1970's when red and green emitters were in extensive production. Early investigations were empirical. This was changed with the invention of the transistor in 1947 by the demonstration of minority carrier injection at a forwardbiased junction, followed by recombination. In 1952 the discovery of the semiconducting behaviour of III-V compounds introduced a new range of materials. Gallium nitride seemed attractive for light emission and was investigated at Ph

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40

Choi, H. K., G. W. Turner, T. H. Windhorn, and B. Y. Tsaur. "VA-5 Monolithic integration of GaAs/AlGaAs double-heterostructure LED's and Si MOSFET's." IEEE Transactions on Electron Devices 33, no. 11 (1986): 1857–58. http://dx.doi.org/10.1109/t-ed.1986.22807.

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41

Khan, I., G. Rooh, R. Rajaramakrishna, et al. "Luminescence characteristics of Sm3+-doped lithium barium gadolinium silicate glasses for Orange LED's." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 214 (May 2019): 14–20. http://dx.doi.org/10.1016/j.saa.2019.01.086.

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42

Bedair, Salah M., Phillip Barletta, Acar Berkman, et al. "Development of Yellow and White LED's Using InGaN-based Multi-Quantum well Structures." ECS Transactions 3, no. 5 (2019): 315–21. http://dx.doi.org/10.1149/1.2357220.

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43

Novotný, J., L. Vyhnalík та J. Zelinka. "Preparation of High-quality InGaAsP/InP Heterostructures for Edge-emitting 1.3 μm LED's". Crystal Research and Technology 28, № 1 (1993): 19–27. http://dx.doi.org/10.1002/crat.2170280105.

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44

Silva, Guilherme Marques dos Santos, Felipe Braga Ribas, and Mário Sérgio Teixeira de Freitas. "Transformação de coordenadas aplicada à construção da maquete tridimensional de uma constelação." Revista Brasileira de Ensino de Física 30, no. 1 (2008): 1306.1–1306.7. http://dx.doi.org/10.1590/s1806-11172008000100007.

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Neste trabalho descrevemos uma atividade teórico-experimental, destinada a alunos de graduação em ciências exatas ou do ensino médio, cujo objetivo principal consiste em aplicar conceitos físicos e matemáticos para resolver problemas decorrentes da construção de uma maquete tridimensional da constelação do Cruzeiro do Sul. O aparato é feito com material de custo moderado como LED's brancos adaptados a potenciômetros para o ajuste de brilho. O conteúdo teórico é composto de conceitos básicos sobre astronomia de posição, transformação de coordenadas e geometria e trigonometria elementares. Neste

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45

Asada, H., N. A. Rabou, H. Ikeda, Y. Shimodaira, and H. Yoshida. "Handheld digital video code distributor using edge-emitting LED's and single mode optical fibers." IEEE Transactions on Consumer Electronics 44, no. 1 (1998): 155–62. http://dx.doi.org/10.1109/30.663742.

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46

Meng-Chyi Wu, Jyh-Feng Lin, Ming-Jiuun Jou, Chuan-Ming Chang, and Biing-Jye Lee. "High reliability of AlGaInP LED's with efficient transparent contacts for spatially uniform light emission." IEEE Electron Device Letters 16, no. 11 (1995): 482–84. http://dx.doi.org/10.1109/55.468274.

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47

Asada, Hideyuki, Nabil Abd Rabou, Hiroaki Ikeda, Yoshifumi Shimodaira, and Hirofumi Yoshida. "Handheld digital video code distributor using edge-emitting LED's and single mode optical fibers." Computer Standards & Interfaces 20, no. 6-7 (1999): 438–39. http://dx.doi.org/10.1016/s0920-5489(99)90895-4.

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48

Pan, Jianbiao. "Effect of Voiding in Solder Joints on Thermal Performance of the LED." International Symposium on Microelectronics 2013, no. 1 (2013): 000895–901. http://dx.doi.org/10.4071/isom-2013-thp46.

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Light-Emitting Diode (LED) lighting has potential to fundamentally alter lighting by replacing incandescent and fluorescent technologies because it offers significant energy saving, longer operational life, and many other advantages. Excellent thermal management and low-cost is vital for LED lighting to become the market standard for general lighting. The packaged LED is typically soldered to the metal-core printed circuit board (MCPCB). However, as the size of the packaged LED increases, voiding in solder joints becomes a major problem since voiding increases the thermal resistance. The resea

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49

Cavalcante, Marisa Almeida, and Rafael Haag. "Corpo negro e determinação experimental da constante de Planck." Revista Brasileira de Ensino de Física 27, no. 3 (2005): 343–48. http://dx.doi.org/10.1590/s1806-11172005000300007.

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Este trabalho visa contribuir na área de instrumentação para o ensino de Física, apresentando uma nova proposta para a determinação da constante de Planck utilizando diodos de emissão de luz, LED's (Light Emitting Diode) como sensores espectrais seletivos da radiação emitida por um filamento aquecido. A largura típica de resposta espectral de um LED, utilizado como sensor na região de 550nm a 700nm é da ordem de 25 a 35 nm o que nos permite selecionar adequadamente, para fins didáticos, o comprimento de onda da radiação analisada. Apresentamos também uma proposta de verificação da lei de Stefa

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50

ZHOU, Zheng, Wen-nan MIAO, Ya LI, Xiao-yan LONG, and Jian LI. "Influence mechanism of GaN-LED's PN junction area on modulation bandwidth in visible light communication." Optics and Precision Engineering 28, no. 7 (2020): 1494–99. http://dx.doi.org/10.37188/ope.20202807.1494.

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