Preparation method of oxysalt-based composite charge transport layer of perovskite solar cell

• Main Authors: LIN ZEQING, HOU YU, YANG SHUANG, YANG HUAGUI
• Format: Patent
• Language: Chinese; English
• Published: 21.12.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

The invention relates to a preparation method of an oxysalt-based composite charge transport layer of a perovskite solar cell. A film is deposited on a substrate through a solution method, and calcining is preformed to prepare the oxysalt composite charge transport layer; the solution method comprises the following steps: adding oxysalt powder into an oxide nanocrystal solution, uniformly stirring, and then forming a film by adopting spin coating or blade coating or silk-screen printing or spray coating; and the oxysalt is composed of alkali metal cations and oxyacid radical anions. The defect of the perovskite film at the interface is effectively passivated by utilizing the local bonding effect of the oxysalt anions at the interface, so that the performance and long-term stability of the solar cell are improved. 本发明涉及一种钙钛矿太阳能电池含氧酸盐基复合电荷传输层的制备方法。本发明是在基底上，通过溶液法沉积成膜并煅烧处理制备出含氧酸盐复合电荷传输层；所述溶液法是将含氧酸盐粉末添加在氧化物纳米晶的溶液中搅拌均匀，随后采用旋涂或刮涂或丝网印刷或喷涂成膜；所述的含氧酸盐，由碱金属阳离子与含氧酸根阴离子组成。本发明利用含氧酸盐阴离子在界面处的局域成键作用，有效的钝化了钙钛矿薄膜在界面处的缺陷，使得太阳能电池性