Defect and interface/surface engineering synergistically modulated electron transfer and nonlinear absorption properties in MoX<sub>2</sub> (X = Se, S, Te)@ZnO heterojunction

Liu, Yu; Li, Hong-Yu; Cao, Hong-Xu; Zheng, Xin-Yu; Yin Shi, Bing-; Yin, Hai-Tao

doi:10.1039/d3nr05766f

Cited by 2 publications

(1 citation statement)

References 59 publications

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“…Two-dimensional (2D) heterojunctions exhibit remarkable carrier transfer properties, making them excellent candidates for NLO [ 23 , 24 ], photocatalysis [ 25 , 26 ], and photodetection [ 27 , 28 ]. 2D heterojunctions can be divided into two types, lateral heterostructure and vertical heterostructure (stacked layer by layer) [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Broadband Reverse Saturable Absorption of Red/Black Phosphorus Heterojunction

Wang,

Liu,

et al. 2024

Molecules

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Although laser technology brings convenience to production and daily life, it also causes high-energy damage. Therefore, there is an urgent need to develop optical limiting materials for laser protection. In this study, a novel nonlinear optical material, red/black phosphorus lateral heterojunction, is successfully prepared through solvothermal and ultrasonic treatment. Using the Z−scan method, the nonlinear optical properties of the red/black phosphorus heterojunction are determined at wavelengths of 532 and 1064 nm. These results indicate that the red/black phosphorus heterojunction exhibits reverse saturable absorption properties in 1.2.3-glycerol. Interestingly, the red/black phosphorus heterojunction shows an enhanced performance over red phosphorus by introducing the black phosphorus phase. Moreover, the red/black phosphorus heterojunction is doped into organically modified silicate gel glass with excellent broadband optical limiting performance. This study highlights the promising prospect of the red/black phosphorus heterojunction in the nonlinear optical and optical limiting fields.

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Section: Introductionmentioning

confidence: 99%

Enhancement of Broadband Reverse Saturable Absorption of Red/Black Phosphorus Heterojunction

Wang,

Liu,

et al. 2024

Molecules

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Enhanced Femtosecond Nonlinear Optical Susceptibility and Terahertz Conductivity in MoSe₂‐Noble Metal Nanocomposites

Mondal,

Haldar,

Pramanik

et al. 2024

Advanced Optical Materials

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Creating heterojunctions or composites by incorporating noble metals offers a remarkable means to modulate the electronic charge transfer and the nonlinear optical (NLO) properties in 2D transition metal dichalcogenides (TMDCs). The response of such 2D‐TMDC‐noble metal composites to femtosecond (fs) infrared (IR) and terahertz (THz) radiation, however, remains vastly unexplored. While the linear optical characteristics of a prototypical 2D‐TMDC, namely, MoSe2 nanosheets incorporated with noble metal (such as Au, Pt, and Ag) nanoparticles in the UV–Vis and the THz spectral range, the NLO characteristics are measured using a 70‐fs pulse at 800 nm excitation is investigated. The results demonstrate a clear reduction of band gap with the incorporation of noble metals in MoSe2, indicating an effective charge transfer mechanism at play. Notably, the MoSe2‐noble metal nanocomposites depicted a significant enhancement in the THz conductivities. In addition, a dramatic 4‐fold enhancement in the third‐order nonlinear coefficient and ≈2‐fold enhancement in the third‐order NLO susceptibility is achieved in MoSe2‐Ag nanocomposite. These results univocally suggest that the noble metal‐based composites with suitable charge transfer channels promote enhanced carrier mobilities and tunable electron transfer dynamics, making these hybrid materials promising candidates for optoelectronic applications both at IR and THz frequencies.

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Defect and interface/surface engineering synergistically modulated electron transfer and nonlinear absorption properties in MoX₂ (X = Se, S, Te)@ZnO heterojunction

Abstract: Constructing interface and defect systematic engineering strategies has been demonstrated to be an effective way to modulate electron transfer and nonlinear absorption properties in semiconductor heterojunction. However, the role of...

Cited by 2 publications

References 59 publications

Enhancement of Broadband Reverse Saturable Absorption of Red/Black Phosphorus Heterojunction

Enhancement of Broadband Reverse Saturable Absorption of Red/Black Phosphorus Heterojunction

Enhanced Femtosecond Nonlinear Optical Susceptibility and Terahertz Conductivity in MoSe₂‐Noble Metal Nanocomposites

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Defect and interface/surface engineering synergistically modulated electron transfer and nonlinear absorption properties in MoX2 (X = Se, S, Te)@ZnO heterojunction

Abstract: Constructing interface and defect systematic engineering strategies has been demonstrated to be an effective way to modulate electron transfer and nonlinear absorption properties in semiconductor heterojunction. However, the role of...

Cited by 2 publications

References 59 publications

Enhancement of Broadband Reverse Saturable Absorption of Red/Black Phosphorus Heterojunction

Enhancement of Broadband Reverse Saturable Absorption of Red/Black Phosphorus Heterojunction

Enhanced Femtosecond Nonlinear Optical Susceptibility and Terahertz Conductivity in MoSe2‐Noble Metal Nanocomposites

Contact Info

Product

Resources

About

Defect and interface/surface engineering synergistically modulated electron transfer and nonlinear absorption properties in MoX₂ (X = Se, S, Te)@ZnO heterojunction

Enhanced Femtosecond Nonlinear Optical Susceptibility and Terahertz Conductivity in MoSe₂‐Noble Metal Nanocomposites