基于6,13-二氯并五苯微纳米带的高性能有机光控晶体管

High Performance Organic Phototransistors Based on Microribbons of 6, 13-Dichloropentacene

摘要:

有机光控晶体管因其低成本、易加工等特点而受到广泛的关注。通过溶剂氛围滴膜法制备了基于6,13 二氯并五苯的微纳米带。采用氯苯做溶剂时，得到了形貌规则、晶形良好的微纳米带，而采用邻二氯苯做溶剂时，获得了大面积有序、定向生长的微纳米带。随后构筑了基于上述微纳结构的单根和多根微纳米带有机光控晶体管，器件显示了高的光敏特性。在很低强度的入射光（1.55mW/cm2）照射下，其光敏系数达1300，表明6,13 二氯并五苯在有机微纳光控晶体管方面具有很好的应用前景。

Abstract:

Organic phototransistors (OPTs) have drawn much attention due to the features of low cost and easy processability. In this paper, organic phototransistors based on 6, 13-dichloropentacene (DCP) microribbons were reported. The DCP microribbons were prepared through solvent vapor enhanced drop casting method, by using chlorobenzene and dichlorobenzene as solvents. Experimental results show that, with chlorobenzene as solvent, crystalline microribbons with well-shaped and high quality were obtained; while with dichlorobenzene as solvent, large area well aligned microribbons were prepared. Organic phototransistors based on these two kinds of crystalline microribbons were constructed by using Au as source and drain electrodes. Under low intensity incident white light (1.55mW/cm2), both transistors display high photo-sensitivity.