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A generic approach yields organic solar cells with enhanced efficiency and thermal stability
Aggregate ( IF 13.9 ) Pub Date : 2022-11-05 , DOI: 10.1002/agt2.289 Mengyuan Gao 1 , Kai Zhang 1 , Chunyong He 2, 3 , Hanqiu Jiang 2, 3 , Xiong Li 4 , Qingchun Qi 1 , Kangkang Zhou 1 , Yu Chen 3 , Wenchao Zhao 5 , Long Ye 1
Aggregate ( IF 13.9 ) Pub Date : 2022-11-05 , DOI: 10.1002/agt2.289 Mengyuan Gao 1 , Kai Zhang 1 , Chunyong He 2, 3 , Hanqiu Jiang 2, 3 , Xiong Li 4 , Qingchun Qi 1 , Kangkang Zhou 1 , Yu Chen 3 , Wenchao Zhao 5 , Long Ye 1
Affiliation
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The use of deuterium are critical for promoting the fundamental understanding of aggregate materials and their new functions. Particularly, the solution structure of conjugated polymers can be hardly resolved without deuteration. However, studies about the isotopic effects of casting solvents on the aggregated structures of photovoltaic polymers and their bulk-heterojunction blends are deficient. Here, the impact of deuterated solvents on the thermal behavior, aggregated structures, and device performance of photovoltaic polymers is clearly delineated for the first time by multiple techniques. The enhanced π-π stacking order of photovoltaic polymers is highly relevant to their relatively poor miscibility with deuterated solvents. Benefiting from higher crystallinity and optimized morphology of deuterated solvents processed films, the devices are able to achieve better efficiency and notable improvement in thermal stability. Our results highlight the isotopic effects of solvents on the aggregated structure of conjugated polymer systems and reveal the potential of innovative approaches to fabricate thermally stable high-efficiency solar cells.
中文翻译：
一种通用方法可产生具有更高效率和热稳定性的有机太阳能电池
氘的使用对于促进对聚合材料及其新功能的基本理解至关重要。特别是，共轭聚合物的溶液结构在没有氘化的情况下很难分辨。然而，关于浇铸溶剂对光伏聚合物及其本体异质结共混物聚集结构的同位素效应的研究还很不足。在这里，首次通过多种技术明确描述了氘代溶剂对光伏聚合物的热行为、聚集结构和器件性能的影响。光伏聚合物增强的 π-π 堆叠顺序与它们与氘化溶剂的混溶性相对较差高度相关。受益于氘化溶剂处理薄膜的更高结晶度和优化形态，这些器件能够实现更高的效率和热稳定性的显着改善。我们的研究结果突出了溶剂对共轭聚合物系统聚集结构的同位素效应，并揭示了制造热稳定高效太阳能电池的创新方法的潜力。
更新日期：2022-11-05
中文翻译：
一种通用方法可产生具有更高效率和热稳定性的有机太阳能电池
氘的使用对于促进对聚合材料及其新功能的基本理解至关重要。特别是，共轭聚合物的溶液结构在没有氘化的情况下很难分辨。然而，关于浇铸溶剂对光伏聚合物及其本体异质结共混物聚集结构的同位素效应的研究还很不足。在这里，首次通过多种技术明确描述了氘代溶剂对光伏聚合物的热行为、聚集结构和器件性能的影响。光伏聚合物增强的 π-π 堆叠顺序与它们与氘化溶剂的混溶性相对较差高度相关。受益于氘化溶剂处理薄膜的更高结晶度和优化形态，这些器件能够实现更高的效率和热稳定性的显着改善。我们的研究结果突出了溶剂对共轭聚合物系统聚集结构的同位素效应，并揭示了制造热稳定高效太阳能电池的创新方法的潜力。
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