support by the National Science Fund for Distinguished Young Scholars of China (Grant No. 60925017);the National Natural Science Foundation of China (Grant Nos. 10990100, 60836003, and 60976045);the National Basic Research Program of China (Grant No. 2007CB936700)
The effects of Mg-induced net acceptor doping concentration and carrier lifetime on the performance of a p-i-n InGaN solar cell are investigated. It is found that the electric field induced by spontaneous and piezoele...
supported by the National Natural Science Foundation for Distinguished Young Scholars,China (Grant No. 60925017);the National Natural Science Foundation of China (Grant Nos. 10990100,60836003,60976045,61223005,and 61176126);the National Basic Research Program of China (Grant No. 2007CB936700)
InGaN/GaN p-i-n solar cells, each with an undoped In0.12Ga0.88N absorption layer, are grown on c-plane sapphire substrates by metal-organic chemical vapor deposition. The effects of the thickness and dislocation densi...
Supported by the National Natural Science Foundation of China under Grant Nos 60506001,60976045,60836003,60776047 and 61076119;the National Basic Research Program(2007CB936700);the National Science Foundation for Distinguished Young Scholar under Grant No 60925017.
We report on the formation of Ohmic contacts with low resistance and high thermal stability to N-face n-GaN for vertical structure light emitters using a Ti(50nm)/Pt(50nm)/Au(50nm)metal scheme,where the Pt layer is in...
Project supported by the National Natural Science Foundation for Distinguished Young Scholars of China (Grant No. 60925017);the National Natural Science Foundation of China (Grant Nos. 10990100,60836003,and 60776047);the National Basic Research Program of China (Grant No. 2007CB936700);the National High Technology Research and Development Program of China(Grant No. 2007AA03Z401)
In situ optical reflectivity measurements are employed to monitor the GaN epilayer growth process above a lowtemperature GaN buffer layer on a c-plane sapphire substrate by metalorganic chemical vapour deposition. It ...
Project supported by the National Science Fund for Distinguished Young Scholars of China (Grant No.60925017);the National Natural Science Foundation of China (Grant Nos.10990100 and 60836003);the National Basic Research Program of China (Grant No.2007CB936700);the National High Technology Research and Development Program of China (Grant No.2007AA03Z401);the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No.ISCAS2009T05O9S4050000)
The light extraction efficiencies have been calculated for various InGaN/GaN multiple quantum well nanostructure light-emitting diodes including nanopillar, nanorough of P-CaN surface, coreshell and nano-interlayer st...
Project supported by the National Natural Science Foundation of China (Grant Nos. 60976045,60506001,60836003 and 60776047);the National Basic Research Program of China (Grant No. 2007CB936700);the National Natural Science Foundation for Distinguished Young Scholars of China (Grant No. 60925017)
This paper reports that a long delay between the beginning of pumping current pulse and the onset of optical pulse is observed in InGaN laser diodes. The delay time decreases as the pumping current increases, and the ...
Project supported by the National Natural Science Foundation of China (Grant Nos. 60506001, 60776047, 60976045, and 60836003);the National Basic Research Programme of China (Grant No. 2007CB936700);the National Natural Science Foundation for Distinguished Young Scholars (Grant No. 60925017)
The composition and stain distributions in the InGaN epitaxial films are jointly measured by employing various x-ray diffraction (XRD) techniques, including out-of-plane XRD at special planes, in-plane grazing incid...
supported by the National Natural Science Foundation of China (Grant Nos. 60506001,60776047,60976045 and 60836003);the National Basic Research Programme of China (Grant No. 2007CB936700);the National Science Foundation for Distinguished Young Scholars,China (Grant No. 60925017)
This paper investigates the major structural parameters, such as crystal quality and strain state of (001)-oriented GaN thin films grown on sapphire substrates by metalorganic chemical vapour deposition, using an in...