Visible Light Emitting Materials and Injection Devices.

1995 ◽  
Author(s):  
Paul H. Holloway
Keyword(s):  
Visible Light ◽  
Light Emitting

Gd3+ doped BiVO4 and visible light-emitting diodes (LED) for photocatalytic decomposition of bisphenol A, bisphenol S and bisphenol AF in water

2021 ◽  
pp. 105842
Author(s):  
Carolina Orona-Návar ◽  
Yuri Park ◽  
Varsha Srivastava ◽  
Netzahualpille Hernández ◽  
Jürgen Mahlknecht ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Visible Light ◽  
Light Emitting Diodes ◽  
Photocatalytic Decomposition ◽  
Bisphenol S ◽  
Light Emitting ◽  
Bisphenol Af

Metalorganic Molecular Beam Epitaxy of GaAsP for Visible Light-Emitting Devices on Si

1998 ◽  
Vol 535 ◽  
Author(s):  
M. Yoshimoto ◽  
J. Saraie ◽  
T. Yasui ◽  
S. HA ◽  
H. Matsunami
Keyword(s):  
Molecular Beam Epitaxy ◽  
Visible Light ◽  
Buffer Layer ◽  
Molecular Beam ◽  
Infrared Light ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Good Crystallinity ◽  
Metalorganic Molecular Beam Epitaxy ◽  
Pre Treatment

AbstractGaAs1–xPx (0.2 <; x < 0.7) was grown by metalorganic molecular beam epitaxy with a GaP buffer layer on Si for visible light-emitting devices. Insertion of the GaP buffer layer resulted in bright photoluminescence of the GaAsP epilayer. Pre-treatment of the Si substrate to avoid SiC formation was also critical to obtain good crystallinity of GaAsP. Dislocation formation, microstructure and photoluminescence in GaAsP grown layer are described. A GaAsP pn junction fabricated on GaP emitted visible light (˜1.86 eV). An initial GaAsP pn diode fabricated on Si emitted infrared light.

Short-range visible light ranging and detecting system using illumination light emitting diodes

2016 ◽  
Vol 10 (3) ◽  
pp. 94-99 ◽  
Author(s):  
Dehao Wu ◽  
Chen Chen ◽  
Zabih Ghassemlooy ◽  
Wen-De Zhong
Keyword(s):  
Visible Light ◽  
Short Range ◽  
Light Emitting Diodes ◽  
Light Emitting

The Intellectual Lighting And Data Transmission System based On RGBW Light Emitting Diodes

2021 ◽  
pp. 63-68
Author(s):  
Daniil S. Shiryaev ◽  
Olga A. Kozyreva ◽  
Ivan S. Polukhin ◽  
Sergey A. Shcheglov ◽  
Svetlana A. Degtiareva ◽  
...  
Keyword(s):  
Visible Light ◽  
Data Transmission ◽  
Light Transmission ◽  
Transmission Rate ◽  
Light Emitting Diode ◽  
Spectral Characteristics ◽  
System Component ◽  
Transmission Channel ◽  
Error Vector Magnitude ◽  
Light Emitting

The system of intellectual lighting data transmission via visible light is developed and manufactured. Spectral characteristics of a downlink which uses the red crystal of a RGBW light emitting diode for data transfer were studied. The DALI protocol-based radiation chromaticity control system which allows us to set different lighting scenarios with constant data transmission rate was developed. The radiation chromaticity range covers almost the entire colour gamut in the colour space. The system of high-frequency matching of system component impedances was developed and frequency characteristics of the suggested scheme were studied for development of the system. Optimal parameters of the signal for visual light communication such as carrier frequency, modulation type and band were determined. Observation of the constellation diagram which represents different values of the complex amplitude of the keyed signal in the form of a complex number on a quadrature plane (cosine and sine components of the carrying signal) and of fixation of the amplitude of the error vector magnitude (EVM) was selected as a method of study of the transmission channel quality. The value of EVM in the visible light transmission channel was significantly lower for signals with amplitude modulation than for phase-manipulated signals. When implementing different lighting change scenarios, radiation of other crystals of the light emitting diode crystals not used for transmission did not lead to increase of EVM by more than one percent.

A review of blue light emitting diodes for future solid state lighting and visible light communication applications

2019 ◽  
Vol 136 ◽  
pp. 106294 ◽  
Author(s):  
M. Manikandan ◽  
D. Nirmal ◽  
J. Ajayan ◽  
P. Mohankumar ◽  
P. Prajoon ◽  
...  
Keyword(s):  
Solid State ◽  
Visible Light ◽  
Blue Light ◽  
Light Emitting Diodes ◽  
Visible Light Communication ◽  
Solid State Lighting ◽  
Light Emitting

scholarly journals Electroluminescence and photo-response of inorganic halide perovskite bi-functional diodes

Nanophotonics ◽  
2018 ◽  
Vol 7 (12) ◽  
pp. 1981-1988 ◽  
Author(s):  
Ning Li ◽  
Ying Suet Lau ◽  
Yanqin Miao ◽  
Furong Zhu
Keyword(s):  
Visible Light ◽  
High Speed ◽  
Light Emission ◽  
Forward Bias ◽  
Green Light ◽  
Visible Light Communication ◽  
Light Emitting ◽  
Response Characteristics ◽  
Photo Response ◽  
Halide Perovskite

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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