有机太阳能电池非富勒烯受体材料研究进展

Research progress on nonfullerene acceptor material for OSCs

有机太阳能电池(OSCs)因其质轻、柔韧性好以及易加工等优点成为新一代太阳能电池的重要发展方向。有机太阳能电池的发展主要离不开以下3个方面:活性层、界面层材料的不断推陈出新和器件制备工艺的不断优化。活性层材料主要由电子给体材料和电子受体材料构成,目前受体材料主要有富勒烯衍生物受体和非富勒烯小分子受体。近来,由于非富勒烯受体的迅猛发展,使有机太阳能电池的器件效率从10%迅速发展到18%以上。综述了几类具有代表性的非富勒烯小分子受体材料,分别为吡咯并吡咯二酮类(DPP),苝二酰亚胺类(PDI),引达省并二噻吩类(IDT)以及其他噻吩类的结构特点及其在有机太阳能电池中的应用和进展。

Organic solar cells(OSCs)have become significant development direction for new generation of solar cells due to their light weight,good flexibility,and easy processing.The development of OSCs principally depends on three aspects:continuous innovation of active layer materials,interlayers,and uninterrupted optimization of device manufacturing processes.Active layer materials mainly composed of electron donor materials and electron acceptor materials.At present,the acceptor materials mainly include fullerene derivative acceptors and nonfullerene small molecule acceptors.Recently,the device efficiency of OSCs has been dramatically increased from 10%to over 18%due to the rapid development of nonfullerene acceptors(NFAs).The tructural characteristics,its application and progress in organic solar cells of some representative nonfullerene small molecule acceptors were summarized,including the molecules based on diketopyrrolopyrrole(DPP),perylene diimides(PDI)derivatives and indacenodithiophene(IDT)derivatives.