PCT ferroelectric controllable perovskite solar cell and preparation method thereof

The invention discloses a PCT ferroelectric controllable perovskite solar cell and a preparation method thereof. The method comprises the following specific steps: 1) cleaning FTO conductive glass; 2)preparing a Pb0.8Ca0.2TiO3 electron transport layer on the surface of the FTO conductive glass; 3) preparing a Cs0.05FA0.8MA0.15PbI2.55Br0.45 light absorption layer on the surface of the Pb0.8Ca0.2TiO3 electron transport layer; 4) preparing a Spiro-OMeTAD hole transport layer on the surface of the Cs0.05FA0.8MA0.15PbI2.55Br0.45 light absorption layer; and 5) evaporating a gold electrode on the surface of the Spiro-OMeTAD hole transport layer. A perovskite ferroelectric oxide film serves as the electron transfer layer, and a Pb0.8Ca0.2TiO3-based novel high-efficiency high-stability ferroelectric controllable perovskite solar cell is constructed and prepared. 本发明公开了一种PCT铁电可调控钙钛矿太阳能电池的制备方法，具体按照以下步骤实施：步骤1、清洗FTO导电玻璃；步骤2、在FTO导电玻璃表面制备PbCaTiO电子传输层；步骤3、在PbCaTiO电子传输层表面制备CsFAMAPbIBr光吸收层；步骤4、CsFAMAPbIBr光吸收层表面制备Spiro-OMeTAD空穴