| Autor: |
Gong, Cheng, Li, Haiyun, Wang, Huaxin, Zhang, Cong, Zhuang, Qixin, Wang, Awen, Xu, Zhiyuan, Cai, Wensi, Li, Ru, Li, Xiong, Zang, Zhigang |
| Předmět: |
|
| Zdroj: |
Nature Communications; 6/26/2024, Vol. 15 Issue 1, p1-10, 10p |
| Abstrakt: |
The bidirectional migration of halides and silver causes irreversible chemical corrosion to the electrodes and perovskite layer, affecting long-term operation stability of perovskite solar cells. Here we propose a silver coordination-induced n-doping of [6,6]-phenyl-C61-butyric acid methyl ester strategy to safeguard Ag electrode against corrosion and impede the migration of iodine within the PSCs. Meanwhile, the coordination between DCBP and silver induces n-doping in the PCBM layer, accelerating electron extraction from the perovskite layer. The resultant PSCs demonstrate an efficiency of 26.03% (certified 25.51%) with a minimal non-radiative voltage loss of 126 mV. The PCE of resulting devices retain 95% of their initial value after 2500 h of continuous maximum power point tracking under one-sun irradiation, and > 90% of their initial value even after 1500 h of accelerated aging at 85 °C and 85% relative humidity. The bidirectional halide and silver migration cause irreversible chemical corrosion to electrodes and perovskite layer. Here, the authors employ 4,4'-dicyano-2,2'-bipyridine in the electron transport layer to coordinate silver and iodide, realizing stable solar cells with efficiency over 26%. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
Full text from SpringerLink