Characterization of Traps in GaN pn Junctions Grown by MOCVD on GaN Substrate Using Deep-Level Transient Spectroscopy
Minority- and majority-carrier traps were studied in GaN pn junctions grown homoepitaxially by MOCVD on n+ GaN substrates. Two majority-carrier traps (MA1,MA2) and three minority-carrier traps (MI1, MI2, [...]
Banknotes, documents, branded products, and sensitive goods like pharmaceuticals or technical components are often marked to distinguish them from imitations. However, some counterfeiters have learned to copy conventional fluorescent tags. In the journal Angewandte Chemie, Chinese scientists have now introduced a new, exceptional anti-counterfeit ink [...]
2017-10-30meta-author
Simulations are carried out to explore the possibility of achieving high breakdown voltage of GaN HEMT (high-electron mobility transistor). GaN cap layers with gradual increase in the doping concentration from 2 × 1016 to 5 × 1019 cm−3 of N-type and P-type cap are investigated, respectively. Simulation results show that HEMT [...]
2019-11-07meta-author
InGaAs HEMTs form two-stage gain blocks delivering 9 dB of gain while consuming just 20 mW
A TEAM of Taiwanese engineers has used flip-chip packaging to build anInGaAs HEMT delivering up to 6.5 dB of gain at 60 GHz.
The researchers argue that one of the [...]
2012-09-10meta-author
PAM-XIAMEN can offer 2&3 inches P-type GaAs substrates. Gallium arsenide (GaAs) is a III-V type direct band gap semiconductor with a zinc blend crystal structure, and GaAs p-type dopant is commonly used as a substrate for epitaxial growth of other III-V semiconductors, including indium gallium arsenide, aluminum gallium [...]
2021-04-15meta-author
PAM-XIAMEN can offer 780nm laser diode wafer with quantum well based on GaAs substrate. The semiconductor lasers fabricated our LD wafer are applied in the fields of laser cutting, laser coating, laser medical treatment, optical communication, infrared security and etc., which have the disadvantages [...]
2016-06-13meta-author