异质结
材料科学
光电子学
太阳能电池
半导体
p-n结
多激子产生
光伏系统
沉积(地质)
载流子
蒸发
激子
电场
物理
电气工程
古生物学
量子力学
沉积物
生物
工程类
热力学
作者
Gang� Li,Yuan Huang,Rongfeng Tang,Bo Che,Pan Xiao,Weitao Lian,Chen Zhu,Tao Chen
出处
期刊:Chinese Physics B
[IOP Publishing]
日期:2022-03-01
卷期号:31 (3): 038803-038803
被引量:2
标识
DOI:10.1088/1674-1056/ac4022
摘要
Carrier separation in a solar cell usually relies on the p–n junction. Here we show that an n–n type inorganic semiconductor heterojunction is also able to separate the exciton for efficient solar cell applications. The n–n type heterojunction was formed by hydrothermal deposition of Sb 2 (S,Se) 3 and thermal evaporation of Sb 2 Se 3 . We found that the n–n junction is able to enhance the carrier separation by the formation of an electric field, reduce the interfacial recombination and generate optimized band alignment. The device based on this n–n junction shows 2.89% net efficiency improvement to 7.75% when compared with the device consisted of semiconductor absorber–metal contact. The study in the n–n type solar cell is expected to bring about more versatile materials utility, new interfacial engineering strategy and fundamental findings in the photovoltaic energy conversion process.
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