Ultrafast self-trapping of photoexcited carriers sets the upper limit on antimony trisulfide photovoltaic devices
oleh: Zhaoliang Yang, Xiaomin Wang, Yuzhong Chen, Zhenfa Zheng, Zeng Chen, Wenqi Xu, Weimin Liu, Yang (Michael) Yang, Jin Zhao, Tao Chen, Haiming Zhu
| Format: | Article |
|---|---|
| Diterbitkan: | Nature Portfolio 2019-10-01 |
Deskripsi
Antimony trisulfide has a proper bandgap of 1.7 eV for making solar cells but the devices suffer from severe voltage loss. Here Yang et al. propose that the photoexcited carriers are self-trapped by lattice deformation, which places a thermodynamic limit of only 0.8 V for the open circuit voltage.