Single photovoltaic material solar cells with enhanced exciton dissociation and extended electron diffusion
Single photovoltaic material solar cells with enhanced exciton dissociation and extended electron diffusion
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具有增强激子解离和扩展电子扩散的单一光伏材料太阳能电池
DOI:
10.1016/j.xcrp.2022.100895
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发表时间:
2022-05
影响因子:
8.9
通讯作者:
Lin Yuze
中科院分区:
文献类型:
--
作者:
Zhang Zhenzhen;Li Li;Xu Chaoying;Jin Pengfei;Huang Miaofei;Li Yawen;Wang Hong;Yi Yuanping;Zhang Chuang;Yang Ye;Xu Weigao;Lin Yuze
Typical organic photovoltaic semiconductors exhibit high exciton binding energy ( E b , typically >300 meV), hindering the development of organic solar cells based on a single photovoltaic material (SPM-OSCs). Herein, compared with the control molecule (Y6), Y6Se with selenium substitution exhibits reduced E b and faster relaxation of the exciton state or the intermediate intra-moiety excimer state, indicating that the exciton dissociation in Y6Se film can be driven by lower energy. The SPM-OSCs based on Y6Se film without and with 1 wt % p-type polymer additive exhibit long charge-carrier lifetime, and extended electron diffusion length, leading to impressive power conversion efficiencies of 3.07% and 3.94%, respectively, which are significantly higher than those values reported for SPM-OSCs based on single photovoltaic small molecules in the literature. In addition, the SPM-OSCs based on Y6Se show superior thermal stability, relative to the typical bulk heterojunction OSCs based on Y6Se blending with polymer donor. • Enhanced exciton dissociation and extended electron diffusion exist in Y6Se • The 3.94% efficiency is higher than those reported for SPM-OSCs with D-A molecules • SPM-OSCs show superior thermal stability than typical bulk heterojunction OSCs Typical organic photovoltaic semiconductors exhibit high exciton binding energy, hindering the development of organic solar cells based on single photovoltaic materials (SPM-OSCs). Zhang et al. report that Y6Se exhibits enhanced exciton dissociation and extended electron diffusion length, leading to enhanced device efficiency in SPM-OSCs.
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影响因子:
19
作者:
Tan Wan-Yi;Wang Rui;Li Min;Liu Gang;Chen Ping;Li Xin-Chen;Lu Shun-Mian;Zhu Hugh Lu;Peng Qi-Ming;Zhu Xu-Hui;Chen Wei;Choy Wallace C. H.;Li Feng;Peng Junbiao;Cao Yong
通讯作者:
Cao Yong
影响因子:
3.7
作者:
Zhu Lingyun;Yi Yuanping;Wei Zhixiang
通讯作者:
Wei Zhixiang
影响因子:
3.7
作者:
Lingyun Zhu;Zhixiang Wei;Yuanping Yi
通讯作者:
Yuanping Yi
影响因子:
16.6
作者:
Davies CL;Filip MR;Patel JB;Crothers TW;Verdi C;Wright AD;Milot RL;Giustino F;Johnston MB;Herz LM
通讯作者:
Herz LM
影响因子:
29.4
作者:
Lin, Yuze;Wang, Jiayu;Zhan, Xiaowei
通讯作者:
Zhan, Xiaowei