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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％).“,”Highly crystalline organic Semiconductors with close molecular stacking could hold high Charge mobility but low soluhility 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(5.28×10-4vs.7.53×10-5cm2·V-1·s-1).With DM-SQ as donor and PC61BM(phenyl-C61-butyric acid methyl ester)as aoceptor,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.