Observation of robust charge transfer under strain engineering in two-dimensional MoS2-WSe2heterostructures

doi:10.1039/d1nr02014e

CIOMP OpenIR

	Observation of robust charge transfer under strain engineering in two-dimensional MoS2-WSe2heterostructures
	S.-W. Zheng; H.-Y. Wang; L. Wang; Y. Luo; B.-R. Gao and H.-B. Sun
	2021
发表期刊	Nanoscale
ISSN	20403364
卷号	13 期号:33 页码:14081-14088
摘要	Strain is one of the effective ways to modulate the band structure of monolayer transition metal dichalcogenides (TMDCs), which has been reported in theoretical and steady-state spectroscopic studies. However, the strain effects on the charge transfer processes in TMDC heterostructures have not been experimentally addressed thus far. Here, we systematically investigate the strain-mediated transient spectral evolutions corresponding to excitons at band-edge and higher energy states for monolayer MoS2 and monolayer WSe2. It is demonstrated that and K valleys in monolayer WSe2 and monolayer MoS2 present different strain responses, according to the broadband femtosecond pump-probe experimental results. It is further observed that the resulting band offset changes tuned by applied tensile strains in MoS2-WSe2 heterostructures would not affect the band-edge electron transfer profiles, where only monolayer WSe2 is excited. From a flexible optoelectronic applications perspective, the robust charge transfer under strain engineering in TMDC heterostructures is very advantageous. This journal is The Royal Society of Chemistry.
DOI	10.1039/d1nr02014e
URL	查看原文
收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/65476
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	S.-W. Zheng,H.-Y. Wang,L. Wang,et al. Observation of robust charge transfer under strain engineering in two-dimensional MoS2-WSe2heterostructures[J]. Nanoscale,2021,13(33):14081-14088.
APA	S.-W. Zheng,H.-Y. Wang,L. Wang,Y. Luo,&B.-R. Gao and H.-B. Sun.(2021).Observation of robust charge transfer under strain engineering in two-dimensional MoS2-WSe2heterostructures.Nanoscale,13(33),14081-14088.
MLA	S.-W. Zheng,et al."Observation of robust charge transfer under strain engineering in two-dimensional MoS2-WSe2heterostructures".Nanoscale 13.33(2021):14081-14088.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Observation of robus（2010KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载