二维材料/PTCDA异质结荧光性能  

Fluorescence Property of Two-Dimensional Materials/PTCDA Heterojunctions

作　　者：李洪飞[1,2] 梁涛[1,2] 谢爽[1,3] 汪胜平 叶能[1,2] 徐明生[1] 

机构地区：[1]浙江大学信息与电子工程学院硅材料国家重点实验室,浙江杭州310027 [2]浙江大学高分子科学与工程学系,浙江杭州310027 [3]浙江大学材料科学与工程学院,浙江杭州310027

出　　处：《中国激光》2017年第7期144-152,共9页Chinese Journal of Lasers

基　　金：国家自然科学基金(51472219;51672244);教育部博士点专项基金(20130101110123)

摘　　要：将3,4,9,10-苝四酸二酐(PTCDA)分别与单层二硫化钼(MoS_2)和石墨烯结合构成有机-无机异质结,并研究其荧光性能。在MoS_2/PTCDA体系中,PTCDA的荧光强度显著增强,这是因为MoS2表面促进了PTCDA外延生长;而在石墨烯/PTCDA体系中,PTCDA的荧光强度明显减弱,这主要是因为该异质结内光生电子发生了跃迁转移。Organic-inorganic heterojunctions are formed by combining 3, 4, 9, 10-perylene tetracarboxylic dianhydride （PTCDA） with molybdenum disulfide （MoS2） monolayer or graphene and their fluorescence properties are studied, respectively. In the MoS2/PTCDA system, the fluorescence intensity is greatly enhanced, because the MoSs surface promotes the epitaxial growth of PTCDA. However, in the graphene/PTCDA system, the fluorescence intensity is obviously reduced due to the transfer transition of photo-induced electrons in the heteroj unction.

关 键 词：材料 过渡金属硫族化合物 石墨烯 有机半导体 异质结 荧光性能 

分 类 号：O472.3[理学—半导体物理]