Enhancement of Reverse Saturable Absorption of Rhenium Disulfide/Graphene Heterojunctions by Interlayer Charge Transfer

Xiang Xu; Ying Zhang; Zenghui Liu; Xing Bai; Jun Wang; Qing Yan; Dengxin Hua

doi:10.3788/AOS202141.2016002

Acta Optica Sinica, Volume. 41, Issue 20, 2016002(2021)

Enhancement of Reverse Saturable Absorption of Rhenium Disulfide/Graphene Heterojunctions by Interlayer Charge Transfer

Xiang Xu¹, Ying Zhang¹, Zenghui Liu¹, Xing Bai¹, Jun Wang¹, Qing Yan¹, and Dengxin Hua^1、*

¹School of Mechanical and Precision Instrument Engineering, Xi′an University of Technology, Xi′an, Shaanxi 710048, China

¹School of Mechanical and Precision Instrument Engineering, Xian University of Technology, Xian, Shaanxi 710048, China

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Fig. 1. Preparation process of ReS₂/graphene heterostructure films with different mixing methods

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Fig. 2. Schematic of Z-scan experimental system

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Fig. 3. TEM images of ReS₂/graphene heterojunction nanosheets. (a) Low-resolution; (b) high-resolution

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Fig. 4. Optical characterization. (a) Raman spectra of ReS₂/graphene heterostructure films; (b) near-infrared absorption spectra of ReS₂/graphene heterostructure films prepared with different mixing methods

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Fig. 5. AFM images of ReS₂/graphene heterostructure films. (a) Powder mixed ReS₂/graphene heterostructure film; (b) mixed ReS₂/graphene heterostructure film after ultrasonication; (c) mixed ReS₂/graphene heterostructure film after centrifugation

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Fig. 6. Z-scan curves of ReS₂, graphene, and ReS₂/graphene heterostructures films prepared with three mixing methods

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Fig. 7. Imχ⁽³⁾ and figure of merit of ReS₂, graphene, and ReS₂/graphene heterostructures films

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Fig. 8. Schematics. (a) Nonlinear absorption mechanism;(b) ReS₂/graphene band alignment

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Table 1. Nonlinear optical parameters of ReS₂, graphene and ReS₂/graphene heterostructures films

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Table 1. Nonlinear optical parameters of ReS₂, graphene and ReS₂/graphene heterostructures films

Material	T /%	L /nm	α₀ /(10⁴ cm^-1)	β_eff /(cm·GW^-1)	Imχ⁽³⁾ /(10^-11esu)	FOM /(10^-15esu·cm)
ReS₂	69	123	1.30	106.44	3.89	3.1
Graphene	71	127	1.17	221.32	8.08	6.9
Film (powder mixing)	68	119	1.40	315.79	11.53	8.2
Film (mixing after ultrasonication)	72	129	1.10	356.59	13.02	11.8
Film (mixing after centrifugation)	70	124	1.25	316.67	11.56	9.3

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Xiang Xu, Ying Zhang, Zenghui Liu, Xing Bai, Jun Wang, Qing Yan, Dengxin Hua. Enhancement of Reverse Saturable Absorption of Rhenium Disulfide/Graphene Heterojunctions by Interlayer Charge Transfer[J]. Acta Optica Sinica, 2021, 41(20): 2016002

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Paper Information

Category: Materials

Received: Jun. 16, 2021

Accepted: Jul. 19, 2021

Published Online: Sep. 30, 2021

The Author Email: Hua Dengxin (xauthdx@163.com)

DOI:10.3788/AOS202141.2016002

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Nonlinear optical parameters of ReS2, graphene and ReS2/graphene heterostructures films

Table 1. Nonlinear optical parameters of ReS2, graphene and ReS2/graphene heterostructures films

Table 1. Nonlinear optical parameters of ReS₂, graphene and ReS₂/graphene heterostructures films

Table 1. Nonlinear optical parameters of ReS₂, graphene and ReS₂/graphene heterostructures films