Zhang Xiaodan, ACS Energy Letters: Record-breaking! Perovskite solar cell with 23.8% efficiency
Release Date:
2021-05-18 15:23
Source:
Tin(II) oxide 2 It is widely used as the electron transport layer in perovskite solar cells, but SnO 2 Thin-film structures typically suffer from a large number of detrimental defect states and poor band alignment with perovskites, leading to losses in the open-circuit voltage of perovskite solar cells. Zhang Xiaodan and colleagues at Nankai University have reported incorporating CoCl 2 ·6H 2 O introduces SnO 2 In the thin film, effective improvement of energy-level alignment enhances charge extraction in the solar cell.
The open-circuit voltage of the battery has been increased to 1.2 V, with an efficiency of 23.82%. This performance represents the highest record achieved to date among batteries with a bandgap of 1.54 V. Meanwhile, the battery’s stability and cycle life are enhanced, with its performance retaining 83.5% after 200 hours of continuous operation. Co doping thus emerges as an effective strategy for reducing energy losses and improving battery efficiency.
References
Pengyang Wang, Bingbing Chen, Renjie Li, Sanlong Wang, Ningyu Ren, Yucheng Li, Sayantan Mazumdar, Biao Shi, Ying Zhao, and Xiaodan Zhang*, Cobalt Chloride Hexahydrate Assisted in Reducing Energy Loss in Perovskite Solar Cells with Record Open-Circuit Voltage of 1.20 V, ACS Energy Lett. 2021, 6, 2121–2128
DOI: 10.1021/acsenergylett.1c00443
https://pubs.acs.org/doi/10.1021/acsenergylett.1c00443
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