Solution-processed Kesterite Cu2ZnSnS4 as Efficient Hole Extraction Layer for Inverted Perovskite Solar Cells
The hole extraction layer (HEL) plays a critical role in determining the charge extraction in inverted perovskite solar cells (PSCs) besides affecting the perovskite crystallization. Herein, we demonstrate efficient inverted perovskite solar cells based on solution-processed kesterite Cu2ZnSnS4 (CZTS) as the HEL for the first time. We achieved CZTS HEL with desired phase purity and optimal film coverage by optimizing the spin-coating process. Moreover, photoluminescence (PL) studies indicate...[Show more]
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