Synthesis of Ultrahigh-Quality Monolayer Molybdenum Disulfide through In Situ Defect Healing with Thiol Molecules

doi:10.1002/smll.202003357

IMR OpenIR

	Synthesis of Ultrahigh-Quality Monolayer Molybdenum Disulfide through In Situ Defect Healing with Thiol Molecules
	Feng, Simin; Tan, Junyang; Zhao, Shilong; Zhang, Shuqing; Khan, Usman; Tang, Lei; Zou, Xiaolong; Lin, Junhao; Cheng, Hui-Ming; Liu, Bilu
	2020-09-01
Source Publication	SMALL
Volume	16 Issue:35
Abstract	Monolayer transition metal dichalcogenides are 2D materials with many potential applications. Chemical vapor deposition (CVD) is a promising method to synthesize these materials. However, CVD-grown materials generally have poorer quality than mechanically exfoliated ones and contain more defects due to the difficulties in controlling precursors' distribution and concentration during growth where solid precursors are used. Here, thiol is proposed to be used as a liquid precursor for CVD growth of high quality and uniform 2D MoS2. Atomic-resolved structure characterizations indicate that the concentration of sulfur vacancies in the MoS(2)grown from thiol is the lowest among all reported CVD samples. Low temperature spectroscopic characterization further reveals the ultrahigh optical quality of the grown MoS2. Density functional theory simulations indicate that thiol molecules could interact with sulfur vacancies in MoS(2)and repair these defects during the growth of MoS2, resulting in high-quality MoS2. This work provides a facile and controllable method for the growth of high-quality 2D materials with ultralow sulfur vacancies and high optical quality, which will benefit their optoelectronic applications.
DOI	10.1002/smll.202003357
WOS ID	WOS:000554477300001
Citation statistics
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/82644
Collection	中国科学院金属研究所
Recommended Citation GB/T 7714	Feng, Simin,Tan, Junyang,Zhao, Shilong,et al. Synthesis of Ultrahigh-Quality Monolayer Molybdenum Disulfide through In Situ Defect Healing with Thiol Molecules[J]. SMALL,2020,16(35).
APA	Feng, Simin.,Tan, Junyang.,Zhao, Shilong.,Zhang, Shuqing.,Khan, Usman.,...&Liu, Bilu.(2020).Synthesis of Ultrahigh-Quality Monolayer Molybdenum Disulfide through In Situ Defect Healing with Thiol Molecules.SMALL,16(35).
MLA	Feng, Simin,et al."Synthesis of Ultrahigh-Quality Monolayer Molybdenum Disulfide through In Situ Defect Healing with Thiol Molecules".SMALL 16.35(2020).

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