28.35 mW cm−2 power output assisted concentrating printable CsPbBr3 solar cell-thermoelectric module tandem device using two-pronged strategy
Wu Shao, Ronghao Cen, Jie Sheng, Dun Ma, Jingshan He, Jingwen He, Tian Ding, Wenjun Wu
Abstract
In this study, the crystalline quality of CsPbBr3 is significantly improved through a two-pronged strategy using a two-step process. Specifically, we combined the etching effect of PEG on PbBr2 with the strong permeation effect of CsBr aqueous solution in the CsPbBr3 preparation. Under 1-sun illumination, the PCE of printable mesoscopic perovskite solar cells (p-MPSCs) based on CsPbBr3 reached an impressive 10.04%, marking the highest reported value to date. By capitalizing on the excellent thermal stability of CsPbBr3 and fully harnessing the surface thermal energy of the device using a thermal-to-electricity generator (TEG) module, the assembled p-MPSC-TEG series-connected four-terminal tandem device achieves a power output of up to 28.35 mW cm−2 under concentrated light. This groundbreaking research not only establishes a new benchmark for all-inorganic p-MPSCs but also underscores their potential for high power output, stability, and simultaneous solar energy utilization in photothermal applications.