▎ 摘 要
NOVELTY - A perovskite solar cell comprises bottom substrate, bottom electrode layer, hole transport layer, passivation layer, perovskite photoactive layer, interface modification layer, electron transport layer, buffer layer and top electrode layer which are sequentially stacked from bottom to top. The interface modification layer is made of bis (2-hydroxyethyl) dimethylammonium chloride. USE - Perovskite solar cell e.g. positive-intrinsic-negative (P-I-N) type perovskite solar cell, wide-band-gap perovskite solar cell or wide-band-gap perovskite-based laminated solar cell (all claimed). ADVANTAGE - The interface modification layer in the perovskite solar cell is made of a material which can well passivate surface defects of perovskite, and stability of the solar cell is improved.