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Your search keyword '"Wang Duxiang"' showing total 2 results
Start Over Author "Wang Duxiang" Topic 01 natural sciences
2 results on '"Wang Duxiang"'

1. Enhanced Efficiency of Metamorphic Triple Junction Solar Cells for Space Applications

Author

Chen Wenjun, Wang Duxiang, Liu Guanzhou, Li Mingyang, Bi Jingfeng, Song Minghui, Wu Chaoyu, and Li Senlin

Subjects
010302 applied physics, Materials science, business.industry, Triple junction, Metamorphic rock, General Physics and Astronomy, chemistry.chemical_element, Germanium, 02 engineering and technology, 021001 nanoscience & nanotechnology, Space (mathematics), 01 natural sciences, Line defects, Surface coating, Photon emission, chemistry, 0103 physical sciences, Energy transformation, Optoelectronics, 0210 nano-technology, business
Published
2017

2. Using a compositionally step graded hole reservoir layer with hole accelerating ability for reducing efficiency droop in GaN-based LEDs

Author

Wu Chaoyu, Meichun Huang, Zhang Dongyan, Wang Duxiang, Chenke Xu, Daqian Ye, and Jie Zhang

Subjects
010302 applied physics, Materials science, business.industry, General Physics and Astronomy, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, lcsh:QC1-999, law.invention, law, Electric field, Lattice (order), 0103 physical sciences, Optoelectronics, Voltage droop, Operating voltage, 0210 nano-technology, business, lcsh:Physics, Light-emitting diode
Abstract

We presented a compositionally graded hole reservoir layers(HRL) - an AlGaN/GaN super lattice hole reservoir layer with Al mole fraction multi-step gradient from high to low (GSL-HRL) in this paper. The designed LED with compositionally step graded HRL shows comparable low operating voltage and less efficiency droop. Simulation results reveal that this graded HRL could reserve the hole effectively and the hole in HRL can be energized by the strong electric field due to the polarization caused by different Al contents AlxGa1-xN layers. Such a design makes hole travel across the p-type EBL and inject into the MQWs more efficiently and smoothly. The novel structure of HRL improves the performance of the LED significantly and gives a promising application in high power GaN-based LED in the future.

Published
2017

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