石墨烯
光电子学
材料科学
发光二极管
二极管
电流(流体)
透射率
图层(电子)
工作职能
宽禁带半导体
纳米技术
电气工程
工程类
作者
Xia Guo,Yajie Feng,Qiaoli Liu,Anqi Hu,Xiaoying He,Zonghai Hu
摘要
Due to high transmittance and high mobility, graphene is one of the promising candidates for a current spreading layer, which is crucial to light emitting diode (LED) performance. In this paper, improved AlGaInP LED performance was reported after graphene was applied on the GaP surface. Due to its lowered work function difference than with the GaN material, the electrical properties remain the same without additional voltage bias. The light output power is enhanced by about 40% under the current injection of 5 mA at room temperature, which was confirmed by the light emission profile analysis in this study. Such results indicate that raphene is a promising candidate as a current spreading layer under low current injection.
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