Local Enhancement of Exciton Emission of Monolayer MoS2 by Copper Phthalocyanine Nanoparticles

被引：20
|
作者：
Ghimire, Ganesh [1 ,2 ]
Adhikari, Subash [1 ,2 ]
Jo, Seong Gi [3 ]
Kim, Hyun [1 ,2 ]
Jiang, Jinbao [1 ,2 ]
Joo, Jinsoo [3 ]
Kim, Jeongyong [1 ,2 ]
机构：
[1] Sungkyunkwan Univ, Dept Energy Sci, Suwon 16419, South Korea
[2] Inst Basic Sci, IBS Ctr Integrated Nanostruct Phys, Suwon 16419, South Korea
[3] Korea Univ, Dept Phys, Seoul 02841, South Korea
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2018年 / 122卷 / 12期
基金：
新加坡国家研究基金会;
关键词：
TRANSITION-METAL DICHALCOGENIDES; LIGHT-EMISSION; ORGANIC SEMICONDUCTORS; VALLEY POLARIZATION; THIN-FILMS; PHOTOLUMINESCENCE; LAYER; TRIONS;
D O I：
10.1021/acs.jpcc.8b00092
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Monolayer transition-metal dichalcogenides (1L-TMDs) provide ideal platforms to study light emission using two-dimensionally confined excitons. Recent studies have shown that the exciton emissions of 1L-TMDs can be conveniently modulated by developing heterostructures with zero-dimensional nanoparticles (NPs) or quantum dots. In this study, we synthesized organic semiconducting copper phthalocyanine (CuPc) NPs with sizes in the range of 30-70 nm by a re-precipitation method and decorated the chemical vapor deposition-grown 1L-MoS2 with these NPs. This hybrid system exhibited a 6 times larger local photoluminescence (PL) at the positions of the CuPc NPs compared with the pristine 1L-MoS2 sample. The PL enhancement and spectral modification of the 1L-MoS2 decorated with CuPc NPs were attributed to the p-doping effect of the CuPc NPs, confirmed by spectral analysis and field-effect transistor measurements.
引用
收藏
页码：6794 / 6800
页数：7
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