Researchers at Japan's NTT Device Technology Laboratories have used silicon (Si) doping to achieve p-type conduction in gallium arsenide antimony (GaAsSb) produced with metal-organic chemical vapor deposition (MOCVD) on indium phosphide ...
Researchers at Chinese Academy of Sciences’ Institute of Semiconductors have achieved a 42% enhancement in light output from flip-chip indium gallium nitride (InGaN) light-emitting diodes (LEDs) by incorporating a photonic crystal ...
Tags: photonic crystal(PHC)structure, light-emitting diodes, Electrical
Rensselaer Polytechnic Institute in the USA has developed nitride semiconductor solar cells with high quantum efficiency for short wavelengths (370-450nm) and concentrated photovoltaics at temperatures up to 400°C [Liang Zhao et al, ...
Tags: PV Performance, Electrical
China’s Xidian University has been developing III-nitride double heterostructures (DHs) with indium gallium nitride (InGaN) channels with a view to high-electron-mobility transistors (HEMTs) [Yi Zhao et al, Appl. Phys. Lett., vol105, ...
Tags: HEMTs, InGaN channels
Northwestern University’s Center for Quantum Devices in USA has developed a monolithic room-temperature terahertz (THz) source based on quantum cascade lasers (QCLs) [Q. Y. Lu et al, Appl. Phys. Lett., vol105, p201102, 2014]. The ...
NTT Basic Research Laboratories in Japan has used a hexagonal boron nitride (h-BN) layer to release and transfer gallium nitride (GaN) high-electron-mobility transistors (HEMTs) from sapphire substrate to thermally conducting copper, ...
Tags: Boron Nitride, GaN Transistors
Researchers based in China have found “remarkably reduced efficiency droop” from staircase (SC) thin indium gallium nitride (InGaN) quantum barrier (QB) light-emitting diodes (LEDs) [Kun Zhou et al, Appl. Phys. Lett., vol105, ...
Tags: High Current, remarkably reduced efficiency droop, Electrical
University of California Santa Barbara (UCSB) and Mitsubishi Chemical Corp have reported indium gallium nitride (InGaN) light-emitting diodes (LEDs) with thicker active regions enabled by growing the crystal on the semi-polar (30-3-1) plane ...
Researchers based in Singapore and Turkey have been developing a hole accelerator structure with a view to improving the performance of indium gallium nitride (InGaN) semiconductor light-emitting diodes (LEDs) [Zi-Hui Zhang et al, Appl. ...
Tags: Nitride LEDs, InGaN
North Carolina State University (NCSU) has been developing homo-epitaxy of non-polar aluminium nitride (AlN) with a view to deep ultraviolet (DUV, less than 300nm wavelength) optoelectronics [Isaac Bryan et al, J. Appl. Phys., vol116, ...
Tags: aluminium nitride, UV LED
Professor Venkat Selvamanickam at the University of Houston has received a $1,499,994 grant from the US Department of Energy (DOE) SunShot Initiative to produce high-efficiency, inexpensive thin-film photovoltaics. The SunShot Initiative ...
Tags: Thin-Film PV, Metal Foil
Xi’an Jiaotong University and Shaanxi Supernova Lighting Technology Co., Ltd., of China have used silver nanorods to engineer gallium vacancy defects in gallium nitride (GaN) to create color tunable light emitting diodes [Yaping Huang ...
Tags: GaN, LEDs, LED heterostructure
Meijo and Nagoya universities in Japan have developed a laser lift-off (LLO) technique for removing gallium nitride (GaN) substrates from ultraviolet (UV) light-emitting diodes (LEDs) to improve light extraction efficiency [Daisuke Iida et ...
Researchers in Japan and USA have claimed the first experimental demonstration of higher breakdown voltage for slant field-plate (FP) gallium nitride (GaN) high-electron-mobility transistors (HEMTs) over convention field-plate designs ...
Tags: GaN, HEMTs, Electronics
University of California, Santa Barbara (UCSB) has used photo-electro-chemical etch (PEC) to create 405nm-wavelength vertical-cavity surface-emitting lasers (VCSELs) based on indium gallium nitride (InGaN) multiple quantum wells (MQWs) [C. ...