Recently, the research team led by Associate Researcher Wu Wenjun from the School of Chemistry and Molecular Engineering at East China University of Science and Technology has established a new benchmark for printable mesoscopic all-inorganic perovskite solar cells (p-MPSCs). They fully explored the solar energy utilization potential from both thermal and optical perspectives, resulting in the development of high-power output and high stability photovoltaic devices. The relevant research findings have been published online in Devices.
The research team employed a dual-strategy approach, combining the etching effect of polyethylene glycol (PEG) on PbBr2 crystals with the strong permeation of CsBr solution, significantly improving the crystal quality of CsPbBr3 prepared by the two-step method for all-inorganic perovskite. Under 1-sun illumination, the power conversion efficiency (PCE) of p-MPSCs based on CsPbBr3 surpassed 10%, reaching 10.04% (the highest PCE reported for all-inorganic p-MPSCs to date). At the same time, by leveraging the excellent thermal stability of CsPbBr3, they assembled p-MPSCs-TEG (thermoelectric generator) four-terminal series-stacked devices, achieving a power output of up to 28.35 mW cm-2 under concentrated sunlight conditions.
The p-MPSCs (perovskite-based multi-junction solar cells) are coupled with TEGs (thermoelectric generators) in series, forming a complementary interface, and achieving a high power output of 28.35 mW cm-2.
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