极限(数学)
电荷(物理)
有机太阳能电池
能量转换效率
功率(物理)
传输(计算)
光伏系统
物理
化学物理
环境科学
材料科学
光电子学
电气工程
热力学
计算机科学
量子力学
工程类
数学
数学分析
并行计算
作者
Tian‐Fu Xiang,Ziyan Liu,Tianfang Zheng,Lin Yang,Hitoshi Tamiaki,Shin‐ichi Sasaki,Jia Li,Xiaofeng Wang
标识
DOI:10.1021/acs.jpclett.4c01631
摘要
The hopping charge transfer (CT) theory is used to explain the dynamics of traditional donor-acceptor (D-A) devices in organic solar cells (OSCs). But it is not applicable to the unconventional OSCs inspired by photosynthesis, referred to as Z-devices. In this study, we establish a universal heterojunction CT model in OSCs, based on the reported coherent CT in photosynthesis. Compared to the trade-off between energy loss and charge generation efficiency in the D-A device, we analyze its change in the Z-device. We introduce the "avalanche-like" CT of the Z-device induced by many-body Coulomb interaction and relevant experimental support. Combining with the Shockley-Queisser theory, we evaluate the theory limit power conversion efficiency of a D-A device and a Z-device. The Z-device has the potential to surpass the Shockley-Queisser limit of 33%.
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