| 范昊宸,黄金华,蒋克健,宋延林,周雪琴.化学通报,2020,83(11):1007-1013. |
| 高结晶度方酸菁染料全溶液制备平面异质结有机太阳能电池 |
| All Solution-Processed Planar Heterojunction Organic Solar Cells Using A Highly Crystalline Squaraine Dye |
| 投稿时间：2020-06-26 修订日期：2020-07-22 |
| DOI： |
| 中文关键词: 方酸菁染料 结晶性 迁移率 太阳电池 |
| 英文关键词:Squaraine dye Crystallinity Mobility Solar cell |
| 基金项目:国家自然科学基金项目（21776207，21576195）资助 |
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| 中文摘要: |
| 高结晶度有机半导体材料由于分子紧密堆叠，电荷迁移率高，但其在普通有机溶剂中溶解度低，溶液可加工性较差，限制了其在有机光电产品中的应用。本文设计合成了一种甲基修饰的高结晶度方酸菁类染料（DM-SQ），利用三氟乙酸溶剂溶液涂布制备DM-SQ薄膜。研究发现溶液制备的DM-SQ薄膜结晶度高，与真空沉积的DM-SQ薄膜比较，空穴迁移率更高（5.28×10-4 vs.7.53×10-5 cm2·V-1·s-1）。以DM-SQ作为给体，PC61BM作为受体，制备了平面异质结太阳能电池。溶液法制备的器件平均能量转换效率明显高于真空沉积器件（6.08±0.19%和3.56±0.22%）。 |
| 英文摘要: |
| Highly crystalline organic semiconductors with close molecular stacking could hold high charge mobility but low solubility in common organic solvents, limiting their solution processability for organic optoelectronics. Herein, a methyl-decorated high-crystalline squaraine dye (DM-SQ) is synthesized, and a highly crystalline thin film is solution-deposited using trifluoroacetic acid (TFA) as solvent. The resultant film shows a higher hole mobility as compared with that of the vacuum-deposited film (5.28×10-4 vs. 7.53×10-5 cm2·V-1·s-1). With DM-SQ as donor and PC61BM (phenyl-C61-butyric acid methyl ester) as acceptor, the solution-processed planar heterojunction solar cells exhibit an average power conversion efficiency of 6.08±0.19%, higher than 3.56±0.22% for the vacuum-deposited devices. |
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