高效有机光伏材料的分子设计：面向降低能量损失及形貌调控

Organic solar cells (OSCs) have attracted great attention due to the unique advantages of light weight, easy fabrication and capability to be fabricated into transparent and flexible devices. Recently, the innovation of fused ring based nonfullerene acceptor materials mainly domains the high efficiency of OSCs. Despite the much progress of OSCs, there are still some challenges for the research field. For instance, the relative high energy loss hinders further improvement of the photovoltaic performance of the devices and the complex morphology control of active layer challenges the commercial application of OSCs. This proposal mainly focuses on reducing energy loss and precisely controlling morphology of active layer by molecular design. The energy levels, optical spectra, crystalline and miscibility of photovoltaic materials will be carefully optimized to reduce energy loss and control morphology of active layer. We dedicate to develop high performance photovoltaic materials with low energy loss and without any extra-treatment.

有机太阳能电池因其质量轻、制备工艺简单、可以制成半透明、柔性器件等突出特点，引起了世界各国的广泛关注并得到了快速的发展。近年来稠环非富勒烯受体材料的创新发展，极大促进了有机太阳能电池能量转换效率的跨越式发展。尽管有机太阳能电池的能量转换效率取得了突破性进展，但仍面临诸多亟待解决的问题，如能量损失大限制器件效率的进一步提升、活性层形貌依赖额外调控给电池大面积应用带来挑战等。本项目拟从有机光伏材料的分子设计角度出发，通过光伏材料分子结构的设计优化降低能量损失以及调控活性层形貌，发展同时具有低能量损失和活性层形貌不依赖额外处理的高效光伏材料。

有机太阳能电池因其质量轻、制备工艺简单、可以制成半透明、柔性器件等突出特点，引起了世界各国的广泛关注并得到了快速的发展。近年来稠环非富勒烯受体材料的创新发展，极大促进了有机太阳能电池能量转换效率的跨越式发展。尽管有机太阳能电池的能量转换效率取得了突破性进展，但仍面临诸多亟待解决的问题，如能量损失大限制器件效率的进一步提升、活性层形貌依赖额外调控给电池大面积应用带来挑战等。本项目从有机光伏材料的分子设计角度出发，通过光伏材料分子结构的设计优化降低能量损失以及调控活性层形貌，发展了一系列高效有机光伏材料和有机光伏材料分子聚集态行为调控方法，有效优化了活性层形貌及降低器件的能量损失，制备了一系列高能量转换效率的有机太阳能电池器件