Active layer of organic solar cell based on hydroxypyrimidine derivative additive and preparation method thereof

The invention discloses an active layer of an organic solar cell and a preparation method thereof, particularly relates to an active layer of an organic solar cell based on a hydroxypyrimidine derivative additive and a preparation method thereof, and belongs to the field of an organic photovoltaic device and a thin-film solar cell. In an active layer of the organic photovoltaic device, by doping asmall amount of 2-alkyl-5-hydroxypyrimidine derivative (abbreviated as ROPD) additive containing a hydrogen-bond interaction and a pi-pi stacking interaction, the crystallinity of the active layer isimproved, and the shape of the active layer is improved, thus being beneficial to separating and collecting a charge between a donor and an acceptor; and therefore, a short-circuit current and a fillfactor of the cell are enhanced, and the energy conversion efficiency of the organic solar cell is improved. 本发明公开了一种有机太阳能电池活性层及其制备方法，具体涉及一种基于羟基嘧啶衍生物添加剂的有机太阳能电池活性层及其制备方法，属于有机光伏器件及其薄膜太阳能电池领域。在有机光伏器件的活性层中，通过掺杂少量含有氢键作用和π-π堆积作用的2-