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Journal articles on the topic 'Light-emitting diode light'

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Author: Grafiati

Published: 10 December 2022

Last updated: 29 January 2023

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1

Hayes, Clinton J., Kerry B. Walsh, and Colin V. Greensill. "Light-emitting diodes as light sources for spectroscopy: Sensitivity to temperature." Journal of Near Infrared Spectroscopy 25, no. 6 (October 10, 2017): 416–22. http://dx.doi.org/10.1177/0967033517736164.

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Understanding of light-emitting diode lamp behaviour is essential to support the use of these devices as illumination sources in near infrared spectroscopy. Spectral variation in light-emitting diode peak output (680, 700, 720, 735, 760, 780, 850, 880 and 940 nm) was assessed over time from power up and with variation in environmental temperature. Initial light-emitting diode power up to full intensity occurred within a measurement cycle (12 ms), then intensity decreased exponentially over approximately 6 min, a result ascribed to an increase in junction temperature as current is passed through the light-emitting diode. Some light-emitting diodes displayed start-up output characteristics on their first use, indicating the need for a short light-emitting diode ‘burn in’ period, which was less than 24 h in all cases. Increasing the ambient temperature produced a logarithmic decrease in overall intensity of the light-emitting diodes and a linear shift to longer wavelength of the peak emission. This behaviour is consistent with the observed decrease in the IAD Index (absorbance difference between 670 nm and 720 nm, A670–A720) with increased ambient temperature, as measured by an instrument utilising light-emitting diode illumination (DA Meter). Instruments using light-emitting diodes should be designed to avoid or accommodate the effect of temperature. If accommodating temperature, as light-emitting diode manufacturer specifications are broad, characterisation is recommended.

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2

Feng, XF, W. Xu, QY Han, and SD Zhang. "Colour-enhanced light emitting diode light with high gamut area for retail lighting." Lighting Research & Technology 49, no. 3 (October 19, 2015): 329–42. http://dx.doi.org/10.1177/1477153515610621.

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Light emitting diodes with high colour quality were investigated to enhance colour appearance and improve observers' preference for the illuminated objects. The spectral power distributions of the light emitting diodes were optimised by changing the ratios of the narrow band red, green and blue light emitting diodes, and the phosphor-converted broad-band light emitting diode to get the desired colour rendering index and high gamut area index. The influence of the light emitting diode light on different coloured fabrics was investigated. The experimental results and the statistical analysis show that by optimising the red, green, blue components the light emitting diode light can affect the colour appearance of the illuminated fabrics positively and make the fabrics appear more vivid and saturated due to the high gamut area index. Observers indicate a high preference for the colours whose saturations are enhanced. The results reveal that the colour-enhanced light emitting diode light source can better highlight products and improve visual impression over the ceramic metal halide lamp and the phosphor-converted light emitting diode light source.

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3

Bando, Kanji. "Light Emitting Diode." JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN 85, no. 1 (2001): 22–24. http://dx.doi.org/10.2150/jieij1980.85.1_22.

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4

Bolt, Thomas. "Light Emitting Diode." Yale Review 93, no. 4 (July 2005): 139–40. http://dx.doi.org/10.1111/j.0044-0124.2005.00963.x.

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5

Sherniyozov, А. А., F. A. Shermatova, Sh D. Payziyev, Sh A. Begimkulov, F. M. Kamoliddinov, A. G. Qahhorov, and A. G. Aliboyev. "Simulation of physical processes in light-emitting diode pumped lasers." «Узбекский физический журнал» 23, no. 3 (December 7, 2021): 38–42. http://dx.doi.org/10.52304/.v23i3.262.

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We have developed an end-to-end simulation model for the light-emitting diode-pumped solidstate laser using the Monte Carlo photon tracing technique. The model considers complete specifics and spectral characteristics of light-emitting diodes. This model is the first of its kind to enable comprehensive analysis of light-emitting diode-pumped laser systems to the best of our knowledge. The model revealed several critical implications, which can be considered in the practical realization of light-emitting diode-pumped lasers.

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6

Yu, Huabin, Zhongjie Ren, Muhammad Hunain Memon, Shi Fang, Danhao Wang, Zhongling Liu, Haochen Zhang, et al. "Cascaded deep ultraviolet light-emitting diode via tunnel junction." Chinese Optics Letters 19, no. 8 (2021): 082503. http://dx.doi.org/10.3788/col202119.082503.

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7

Lee, Ming-Kwei, Min-Yen Yeh, Hon-Da Huang, and Chih-Wei Hong. "Blue Light Emitting Diode." Japanese Journal of Applied Physics 34, Part 1, No. 7A (July 15, 1995): 3543–45. http://dx.doi.org/10.1143/jjap.34.3543.

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8

Leonard, Daniel L., and Edward J. Swift. "LIGHT-EMITTING-DIODE CURING LIGHTS?REVISITED." Journal of Esthetic and Restorative Dentistry 19, no. 1 (January 2007): 56–62. http://dx.doi.org/10.1111/j.1708-8240.2006.00065.x.

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9

Shi, Zheng, Qinyan Zhou, Shuyu Ni, Hongbo Zhu, and Yongjin Wang. "Light-responsive vertical-structure light-emitting diode." Semiconductor Science and Technology 35, no. 4 (March 19, 2020): 045025. http://dx.doi.org/10.1088/1361-6641/ab760d.

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10

Hande, Savithri, and Prajna K B. "Survey on Organic Light Emitting Diode." International Journal of Innovative Science and Research Technology 5, no. 6 (July 2, 2020): 630–36. http://dx.doi.org/10.38124/ijisrt20jun492.

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Organic light emitting diodes is a new display technology, which uses organic thin materials that are placed between conductors. When an electric current is applied, a bright light is emitted. OLEDs are thin, transparent, flexible, foldable displays. In 1987 researchers of Eastman Kodak company invented OLED diode technology. The principal inventors were Chemists Ching W. Tang and Steven Van Slyke. In 2001 they received an Industrial Innovation Award from the American Chemical Society for their contribution in organic light emitting diodes. In 2003, Kodak realised its first OLED display had 512 by 218 pixels, 2.2 inch. Two technologies necessary to make flexible OLEDs were invented by Researchers at Pacific Northwest National Laboratory and the Department of Energy. Many researchers are contributing to improve the OLED technology. In this paper we give a brief of what is OLED, types of OLED, different fabrication methods of OLED, advantages and disadvantages of OLED.

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11

Cho, Jaehee, and Jong Kyu Kim. "Transfer or delivery of micro light-emitting diodes for light-emitting diode displays." AIP Advances 9, no. 10 (October 2019): 100901. http://dx.doi.org/10.1063/1.5118992.

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12

Chaoping Chen, Chaoping Chen, Hongjing Li Hongjing Li, Yong Zhang Yong Zhang, Changbum Moon Changbum Moon, Woo Young Kim Woo Young Kim, and Chul Gyu Jhun Chul Gyu Jhun. "Thin-film encapsulation for top-emitting organic light-emitting diode with inverted structure." Chinese Optics Letters 12, no. 2 (2014): 022301–22303. http://dx.doi.org/10.3788/col201412.022301.

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13

Suehiro, Y., T. Sato, and S. Yamazaki. "Reflector type light emitting diode." JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN 79, Appendix (1995): 101. http://dx.doi.org/10.2150/jieij1980.79.appendix_101.

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14

Kuvaldin, É. V., and A. A. Shul’ga. "Pulsed light-emitting diode emitter." Journal of Optical Technology 84, no. 9 (September 1, 2017): 647. http://dx.doi.org/10.1364/jot.84.000647.

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15

Jia, D., and D. N. Hunter. "Long persistent light emitting diode." Journal of Applied Physics 100, no. 11 (2006): 113125. http://dx.doi.org/10.1063/1.2400091.

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16

Salter, C. L., R. M. Stevenson, I. Farrer, C. A. Nicoll, D. A. Ritchie, and A. J. Shields. "An entangled-light-emitting diode." Nature 465, no. 7298 (June 2010): 594–97. http://dx.doi.org/10.1038/nature09078.

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17

Schubert, E. F., Y. ‐H Wang, A. Y. Cho, L. ‐W Tu, and G. J. Zydzik. "Resonant cavity light‐emitting diode." Applied Physics Letters 60, no. 8 (February 24, 1992): 921–23. http://dx.doi.org/10.1063/1.106489.

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18

Saito, S., K. Oda, T. Takahama, K. Tani, and T. Mine. "Germanium fin light-emitting diode." Applied Physics Letters 99, no. 24 (December 12, 2011): 241105. http://dx.doi.org/10.1063/1.3670053.

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19

Johnson, David A. "Demonstrating the light‐emitting diode." American Journal of Physics 63, no. 8 (August 1995): 761–62. http://dx.doi.org/10.1119/1.17854.

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20

Dasgupta, Purnendu K., In-Yong Eom, Kavin J. Morris, and Jianzhong Li. "Light emitting diode-based detectors." Analytica Chimica Acta 500, no. 1-2 (December 2003): 337–64. http://dx.doi.org/10.1016/s0003-2670(03)00575-0.

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21

Zwiller, Val. "A spooky light-emitting diode." Nature Photonics 4, no. 8 (August 2010): 508–9. http://dx.doi.org/10.1038/nphoton.2010.183.

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22

Könenkamp, R., Robert C. Word, and C. Schlegel. "Vertical nanowire light-emitting diode." Applied Physics Letters 85, no. 24 (December 13, 2004): 6004–6. http://dx.doi.org/10.1063/1.1836873.

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23

William, Abramovits, Arrazola Peter, and Gupta Aditya K. "Light‐Emitting Diode‐Based Therapy." SKINmed: Dermatology for the Clinician 4, no. 1 (January 2005): 38–41. http://dx.doi.org/10.1111/j.1540-9740.2005.03959.x.

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24

Krasnov, A. N., Yu N. Purtov, Yu F. Vaksman, and V. V. Serdyuk. "ZnSe blue-light-emitting diode." Journal of Crystal Growth 125, no. 1-2 (November 1992): 373–74. http://dx.doi.org/10.1016/0022-0248(92)90350-r.

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25

Kabe, Ryota, Naoto Notsuka, Kou Yoshida, and Chihaya Adachi. "Afterglow Organic Light-Emitting Diode." Advanced Materials 28, no. 4 (November 24, 2015): 655–60. http://dx.doi.org/10.1002/adma.201504321.

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26

Su, Kang, Jing Li, Chang Ge, Xing-Dong Lu, Zhi-Cong Li, Guo-Hong Wang, and Jin-Min Li. "Stackable luminescent device integrating blue light emitting diode with red organic light emitting diode." Chinese Physics B 29, no. 4 (April 2020): 048504. http://dx.doi.org/10.1088/1674-1056/ab77ff.

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27

Smirnov, V. I., V. A. Sergeev, and A. A. Gavrikov. "Measurement of the Thermal Impedance of Light-Emitting Diodes and Light-Emitting Diode Matrices." Measurement Techniques 60, no. 1 (April 2017): 46–51. http://dx.doi.org/10.1007/s11018-017-1157-8.

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28

You, Chenhua. "Visual equivalence of light-emitting diode white light." Optical Engineering 44, no. 11 (November 1, 2005): 111307. http://dx.doi.org/10.1117/1.2128635.

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29

Baird, William H., W. Nathan Hack, Kiet Tran, Zeeshan Vira, and Matthew Pickett. "The Light‐Emitting Diode as a Light Detector." Physics Teacher 49, no. 3 (March 2011): 171–74. http://dx.doi.org/10.1119/1.3555506.

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30

Chen Jiule, 陈久乐, 钟建 Zhong Jian, and 高娟 Gao Juan. "Alternated red-emitting organic light-emitting diode." High Power Laser and Particle Beams 24, no. 7 (2012): 1633–37. http://dx.doi.org/10.3788/hplpb20122407.1633.

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31

Горелик, В. С., А. Ю. Пятышев, and Н. В. Сидоров. "Фотолюминесценция ниобата лития, легированного медью." Физика твердого тела 60, no. 5 (2018): 904. http://dx.doi.org/10.21883/ftt.2018.05.45784.339.

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AbstractThe photoluminescence (PL) of copper-doped lithium niobate single crystals is studied using different UV–Vis light-emitting diodes and a pulse-periodic laser with a wavelength of 266 nm as excitation radiation sources. With the resonance excitation from a 527-nm light-emitting diode, the intensity of PL increases sharply (by two orders of magnitude). When using a 467-nm light-emitting diode for excitation, the PL spectrum is characterized by the presence of multiphonon lines in the range of 520–620 nm.

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32

Muray, Kathleen. "Photometry of diode emitters: light emitting diodes and infrared emitting diodes." Applied Optics 30, no. 16 (June 1, 1991): 2178. http://dx.doi.org/10.1364/ao.30.002178.

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33

Leonard, Daniel L., and Edward J. Swift Jr. "LIGHT-EMITTING DIODE CURING LIGHTS, PART I." Journal of Esthetic and Restorative Dentistry 15, no. 2 (March 2003): 123–26. http://dx.doi.org/10.1111/j.1708-8240.2003.tb01037.x.

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34

Salman, RK. "Research note: Light emitting diodes as solar power resources." Lighting Research & Technology 51, no. 3 (March 19, 2018): 476–83. http://dx.doi.org/10.1177/1477153518764211.

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This paper investigates the possibility of recycling light emitting diodes from damaged electronic devices, and using them in a similar way to photovoltaic cells in order to reduce environmental pollution. The study used a number of tests with a variety of different parameters for measuring the capability for light emitting diodes to harvest the sun’s rays and to convert them into a useful form of electrical power. The different configurations involved variations of light emitting diode wavelength and number, as well as the connection types between the light emitting diodes (series and parallel) and the angle of incidence of the sun’s rays to the light emitting diode’s base. The results showed promising voltage data for parallel-connected light emitting diodes of lemon (yellow-green) and green colour. The variations in voltage produced by tilting the light emitting diode’s base exhibited similar behaviour to that seen in solar panels. The power that was harvested from the light emitting diodes was extremely low, but the voltage gains showed promising trends that could be employed in useful applications. Hence, light emitting diodes could be re-used to reduce environmental pollution and thus to contribute towards environmental enhancement.

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35

Lee, Hyeongi, and Taeyoung Won. "Light Conversion Efficiency of Top-Emitting Organic Light-Emitting Diode Structure." Journal of Nanoscience and Nanotechnology 14, no. 11 (November 1, 2014): 8305–8. http://dx.doi.org/10.1166/jnn.2014.9914.

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36

Masui, Hisashi. "Diode ideality factor in modern light-emitting diodes." Semiconductor Science and Technology 26, no. 7 (April 11, 2011): 075011. http://dx.doi.org/10.1088/0268-1242/26/7/075011.

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37

Huang, Ming-Shyan, Chuan-Cheng Hung, Yi-Chin Fang, Wei-Chi Lai, and Yi-Liang Chen. "Optical design and optimization of light emitting diode automotive head light with digital micromirror device light emitting diode." Optik 121, no. 10 (June 2010): 944–52. http://dx.doi.org/10.1016/j.ijleo.2008.12.018.

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38

Li, Ning, Ying Suet Lau, Yanqin Miao, and Furong Zhu. "Electroluminescence and photo-response of inorganic halide perovskite bi-functional diodes." Nanophotonics 7, no. 12 (November 26, 2018): 1981–88. http://dx.doi.org/10.1515/nanoph-2018-0149.

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AbstractIn this work, we report our efforts to develop a novel inorganic halide perovskite-based bi-functional light-emitting and photo-detecting diode. The bi-functional diode is capable of emitting a uniform green light, with a peak wavelength of 520 nm, at a forward bias of >2 V, achieving a high luminance of >103 cd/m2 at 7 V. It becomes an efficient photodetector when the bi-functional diode is operated at a reverse bias, exhibiting sensitivity over a broadband wavelength range from ultraviolet to visible light. The bi-functional diode possesses very fast transient electroluminescence (EL) and photo-response characteristics, e.g. with a short EL rising time of ~6 μS and a photo-response time of ~150 μS. In addition, the bi-functional diode also is sensitive to 520 nm, the wavelength of its peak EL emission. The ability of the bi-functional diodes for application in high speed visible light communication was analyzed and demonstrated using two identical bi-functional diodes, one performed as the signal generator and the other acted as a signal receiver. The dual functions of light emission and light detection capability, enabled by bi-functional diodes, are very attractive for different applications in under water communication and visible light telecommunications.

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39

Dimitrocenko, L., J. Grube, P. Kulis, G. Marcins, B. Polyakov, A. Sarakovskis, M. Springis, and I. Tale. "AlGaN-InGaN-GaN Near Ultraviolet Light Emitting Diode." Latvian Journal of Physics and Technical Sciences 45, no. 4 (January 1, 2008): 25–32. http://dx.doi.org/10.2478/v10047-008-0017-3.

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AlGaN-InGaN-GaN Near Ultraviolet Light Emitting DiodeA 382-nm InGaN/AlGaN light-emitting diode (LED) was made on a sapphire substrate by metal-organic vapour phase deposition (MOCVD) technique. Growing of the undoped and Si-doped GaN and AlxGa1-xN monocrystalline layers with a surface roughness of < 1 nm required for making light emitting devices has been carried out. To enhance the LED emission efficiency, a modified symmetric composition of an active single quantum well (SQW) structure was proposed. In addition to the conventional p-doped AlGaN:Mg electron overflow blocking barrier, ann-doped AlGaN:Si SQW barrier layer in the structure was formed that was meant to act as an additional electron tunneling barrier.

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40

NISHIKAGE, Yosuke. "Light Source for 21st Century: LED (Light Emitting Diode)." Journal of Plasma and Fusion Research 81, no. 12 (2005): 1010–11. http://dx.doi.org/10.1585/jspf.81.1010.

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41

Moriya, Norihisa, Masayuki Sugawara, Ryutaro Harada, Tatsuya Kageyama, and Kinji Matsushima. "New Color Filter for Light-Emitting Diode Back Light." Japanese Journal of Applied Physics 42, Part 1, No. 4A (April 15, 2003): 1637–41. http://dx.doi.org/10.1143/jjap.42.1637.

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42

de Magalhães Filho, Thales Ribeiro, Karin de Mello Weig, Marcelo Martins Werneck, Célio Albano da Costa Neto, and Marysilvia Ferreira da Costa. "Odontological light-emitting diode light-curing unit beam quality." Journal of Biomedical Optics 20, no. 5 (May 13, 2015): 055005. http://dx.doi.org/10.1117/1.jbo.20.5.055005.

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43

Schulz, Erich B., and John A. Ham. "Light-emitting diode surgical light interference with pulse oximetry." British Journal of Anaesthesia 123, no. 4 (October 2019): e490-e491. http://dx.doi.org/10.1016/j.bja.2019.07.002.

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44

Padmasali, AN, and SG Kini. "LED life prediction based on lumen depreciation and colour shift." Lighting Research & Technology 49, no. 1 (August 3, 2016): 84–99. http://dx.doi.org/10.1177/1477153515593580.

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Light emitting diodes, with advantages in energy savings, luminous efficacy and greater reliability, are becoming preferred over conventional white light sources. Currently, only light output depreciation is considered for life estimation of light emitting diode luminaires but it is recommended to include colour shift variations for applications demanding colour stability. In this paper, an extended Kalman filter is employed to determine L70 life and colour temperature degradation over life of a light emitting diode luminaire. The colour shift in terms of Duv is determined by statistical polynomial cure fitting. The variation in chromaticity coordinates over life is determined and life based on colour shift is determined by acceptable Duv limits. The results are compared to life determined by the IES-TM-21 method and the correlated colour temperature limits taken from the luminaire data sheet.

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45

Kim, Taekyung, Kyung Hyung Lee, and Jun Yeob Lee. "Superb lifetime of blue organic light-emitting diodes through engineering interface carrier blocking layers and adjusting electron leakage and an unusual efficiency variation at low electric field." Journal of Materials Chemistry C 6, no. 31 (2018): 8472–78. http://dx.doi.org/10.1039/c8tc02286k.

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An extremely long lifetime blue organic light-emitting diode (OLED) was developed through managing the electron density and an S-shaped variation of efficiency in blue fluorescent organic light-emitting diodes (FOLEDs) using carrier blocking layers and systematically analyzed in conjunction with the efficiency–lifetime interrelationship.

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46

Kim, Dong-Eun, Won-Sam Kim, Burm-Jong Lee, and Young-Soo Kwon. "White Organic Light-Emitting Diode Using Blue-Light-Emitting Zn(HPB)2Material." Japanese Journal of Applied Physics 46, no. 4B (April 24, 2007): 2749–52. http://dx.doi.org/10.1143/jjap.46.2749.

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47

Xu, Denghui, and Chihaya Adachi. "Organic light-emitting diode with liquid emitting layer." Applied Physics Letters 95, no. 5 (August 3, 2009): 053304. http://dx.doi.org/10.1063/1.3200947.

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48

Bae, Jae-Hyun, Heui-Chun An, Mi-Gyeong Kim, Jin-Chul Park, Heum-Gi Park, and O.-Nam Kwon. "Adaptation of light emitting diode (LED) at culture on attachment plate of diatom." Journal of the Korean society of Fisheries Technology 50, no. 4 (November 30, 2014): 542–50. http://dx.doi.org/10.3796/ksft.2014.50.4.542.

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49

Janicki, Marcin, Tomasz Torzewicz, Przemysław Ptak, Tomasz Raszkowski, Agnieszka Samson, and Krzysztof Górecki. "Parametric Compact Thermal Models of Power LEDs." Energies 12, no. 9 (May 7, 2019): 1724. http://dx.doi.org/10.3390/en12091724.

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Light-emitting diodes are nowadays the most dynamically developing type of light sources. Considering that temperature is the main factor affecting the electrical and lighting parameters of these devices, thermal models are essential subcomponents of the multidomain models commonly used for simulation of their operation. The authors investigated white power light-emitting diodes soldered to Metal Core Printed Circuit Boards (MCPCBs). The tested devices were placed in a light-tight box on a cold plate and their cooling curves were registered for different diode heating current values and various preset cold plate temperatures. These data allowed the computation of optical and real heating power values and consequently the generation of compact thermal models in the form of Foster and Cauer RC ladders. This also rendered possible the analysis of the influence of the considered factors on the compact model element values and their parametrization. The resulting models yield accurate values of diode junction temperature in most realistic operating conditions and they can be easily included in multidomain compact models of power light emitting diodes.

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50

Koyama, Minoru. "Light Emitting Diode and Its Application." JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN 69, no. 12 (1985): 642–46. http://dx.doi.org/10.2150/jieij1980.69.12_642.

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