电场
材料科学
钙钛矿(结构)
光电子学
载流子
兴奋剂
电流密度
重组
能量转换效率
扩散
电压
开路电压
载流子寿命
太阳能电池理论
化学物理
聚合物太阳能电池
化学
硅
物理
热力学
基因
量子力学
生物化学
结晶学
作者
Lin Xing Shi,Zi Shuai Wang,Zengguang Huang,Wei E. I. Sha,Haoran Wang,Zhen Zhou
出处
期刊:AIP Advances
[American Institute of Physics]
日期:2018-02-01
卷期号:8 (2)
被引量:24
摘要
Charge carrier recombination in the perovskite solar cells (PSCs) has a deep influence on the electrical performance, such as open circuit voltage, short circuit current, fill factor and ultimately power conversion efficiency. The impacts of injection barrier, recombination channels, doping properties of carrier transport layers and light intensity on the performance of PSCs are theoretically investigated by drift-diffusion model in this work. The results indicate that due to the injection barrier at the interfaces of perovskite and carrier transport layer, the accumulated carriers modify the electric field distribution throughout the PSCs. Thus, a zero electric field is generated at a specific applied voltage, with greatly increases the interfacial recombination, resulting in a local kink of current density-voltage (J-V) curve. This work provides an effective strategy to improve the efficiency of PSCs by pertinently reducing both the injection barrier and interfacial recombination.
科研通智能强力驱动
Strongly Powered by AbleSci AI