Observation and Optical Control of Saturable Excitonic Behaviors in Monolayer MoS2

doi:10.1002/pssr.202000222

	Observation and Optical Control of Saturable Excitonic Behaviors in Monolayer MoS2
	Zhang, Jie 2; Ding, Lan 2; Zhou, Shun 2; Xiao, Yi Ming 2; Xu, Wen 1,2
刊名	PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
	2020-07-01
关键词	2D materials active tuning excitons light-matter interactions MoS2
ISSN号	1862-6254
DOI	10.1002/pssr.202000222
通讯作者	Ding, Lan(dinglan@ynu.edu.cn)
英文摘要	In photonics and condensed-matter physics, optical control of many-body phenomena is significant for fundamental studies and optoelectronic applications. Herein, pronounced saturable excitonic behaviors in the nontransient optical response of monolayer MoS(2)pumped by continuous-wave laser are observed. These behaviors include bleaching of the excitonic absorption and a blueshift of the exciton resonance at increasing power of pump light, which are attributed to the band-filling nonlinearity of excitons and repulsion-dominated interaction between them, respectively. Moreover, it is also shown that the substrate has a strong impact on these phenomena, which can be ascribed to the changes in the dielectric screening effect and the trion spectral weight. In nontransient regime, the results not only demonstrate the analogy between excitons and atoms with respect to photon-particle and interparticle interactions, but also show the optical control of this many-body effect. These findings can also push forward the research of photonic devices based on 2D materials.
资助项目	National Natural Science Foundation of China[11764045] ; National Natural Science Foundation of China[U1832153] ; Ten-thousand Talents Program of Yunnan Province[YNWR-QNBJ-2018-037] ; Science and Technology Major Project of Yunnan Province[2018ZI002] ; Center of Science and Technology of Hefei Academy of Science ; Yunnan University[2016MS14]
WOS关键词	NONLINEAR ABSORPTION ; PHOTOLUMINESCENCE ; OPTOELECTRONICS ; NANOSHEETS ; TRIONS
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000545977500001
资助机构	National Natural Science Foundation of China ; Ten-thousand Talents Program of Yunnan Province ; Science and Technology Major Project of Yunnan Province ; Center of Science and Technology of Hefei Academy of Science ; Yunnan University
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/71180]
专题	中国科学院合肥物质科学研究院
通讯作者	Ding, Lan
作者单位	1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 2.Yunnan Univ, Sch Phys & Astron, Kunming 650091, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jie,Ding, Lan,Zhou, Shun,et al. Observation and Optical Control of Saturable Excitonic Behaviors in Monolayer MoS2[J]. PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS,2020.
APA	Zhang, Jie,Ding, Lan,Zhou, Shun,Xiao, Yi Ming,&Xu, Wen.(2020).Observation and Optical Control of Saturable Excitonic Behaviors in Monolayer MoS2.PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS.
MLA	Zhang, Jie,et al."Observation and Optical Control of Saturable Excitonic Behaviors in Monolayer MoS2".PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS (2020).