二硫化铼量子点的制备及其光致发光性质研究
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摘要
采用液相超声法首次成功制备出二硫化铼量子点(ReS_2 QDs),表面形貌、物相组分和光学性能测试发现:ReS_2 QDs平均粒径为2.7 nm,呈现六方晶系圆形结构并具有斯托克斯(Stokes)位移效应,表现出比体材料更优异的光学性能.
Rhenium Disulfide quantum dots(ReS_2 QDs) have been successfully prepared by an ultrasonic liquid phase exfoliation method.The surface morphology,phase composition and optical properties characterization found:ReS_2 QDs have an average particle size of 2.7 nm,exhibit a hexagonal circular structure and have a Stokes shift effect,showing superior optical properties compared to bulk materials.
Rhenium Disulfide quantum dots(ReS_2 QDs) have been successfully prepared by an ultrasonic liquid phase exfoliation method.The surface morphology,phase composition and optical properties characterization found:ReS_2 QDs have an average particle size of 2.7 nm,exhibit a hexagonal circular structure and have a Stokes shift effect,showing superior optical properties compared to bulk materials.
引文
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[8] LIU E,LONG M,ZENG J,et al.High responsivity phototransistors based on few-layer ReS2 for weak signal detection[J].Advanced Functional Materials,2016,26(12):1 938-1 944.
[9] ZHU S,SONG Y,WANG J,et al.Photoluminescence mechanism in graphene quantum dots:quantum confinement effect and surface/edge state[J].Nano Today,2017,13:10-14.
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[18] YU X,PREVOT M S,GUIJARRO N,et al.Self-assembled 2D WSe2 thin films for photoelectrochemical hydrogen production[J].Nature Communications,2015,6:7 596.
[19] SATOH N,NAKASHIMA T,KAMIKURA K,et al.Quantum size effect in TiO2 nanoparticles prepared by finely controlled metal assembly on dendrimer templates[J].Nature Nanotechnology,2008,3(2):106-111.
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[22] QIAN F,LI X,TANG L,et al.Potassium doping:Tuning the optical properties of graphene quantum dots[J].AIP Advances,2016,6(7):075 116.