Study on Carrier transportation in InGaN based green LEDs with V-pits structure in the active region
Study on Carrier transportation in InGaN based green LEDs with V-pits structure in the active region
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有源区V坑结构InGaN基绿色LED载流子传输研究
DOI:
10.1016/j.optmat.2018.09.017
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发表时间:
2018-12
影响因子:
3.9
通讯作者:
Jiang Fengyi
中科院分区:
文献类型:
--
作者:
Zhang Jianli;Wang Xiaolan;Liu Junlin;Mo Chunlan;Wu Xiaoming;Wang Guangxu;Jiang Fengyi
InGaN based LEDs with V-pits structure and consists of n-GaN, In0.1Ga0.9N/GaN superlattices (SLs), In0.15Ga0.85N blue quantum wells (BQWs), In0.25Ga0.75N green quantum wells (GQWs) and p-GaN were grown on Si substrate. Carrier transportation is studied by temperature-dependent electroluminescence (TDEL). With n-doping in the SLs and BQWs, the major emission peak is from the GQWs. Under low temperature and high injection current, side peaks emitted form SLs and BQWs can be observed. Reducing the number of GQWs will result in stronger side peaks. We propose that the disequilibrium in carrier concentration bring high drift velocity to the holes, partial holes fly across the sidewall of V-pits to n-side and recombined with the electrons in the BQWs and SLs.
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影响因子:
1.9
作者:
Wang Guangxu;Tao Xixia;Liu Junlin;Jiang Fengyi
通讯作者:
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通讯作者:
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