Surface engineering of provskites for highly efficient perovskite solar cells with air thermal stability
발표자
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초록
내용
Realizing ambient-processed and stable device performance of the all-inorganic halide perovskite solar cells is a well-established goal within the halide perovskite research community. In striving for this, different halide compositions and metal-ion dopants at A-site and B-site have been widely installed. Here, a different strategy has been used for realizing efficient inorganic mixed halide perovskite photovoltaics devices based on different dopants in the CsPb1−xMx(I1-xBrx)3 perovskite absorber. Notably, all devices fabricated from air-processed perovskite thin films exhibit an air-stable power conversion efficiency (PCE) that reaches 20 % with negligible hysteresis and maintains >90% of the initial efficiency under harsh environmental conditions. This high performance is attributed to preserving a solar-friendly, and phase-stable perovskite layer, along with improved charge carrier management through metal ion dopants and additives.