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Liang Jing, Zhou Liangliang, Li Bin, Li Xueming, Tang Libin. Research on the preparation, structure and infrared properties of Sb2Te3 quantum dots[J]. Infrared and Laser Engineering, 2020, 49(1): 0103002-0103002(6). doi: 10.3788/IRLA202049.0103002
Citation: Liang Jing, Zhou Liangliang, Li Bin, Li Xueming, Tang Libin. Research on the preparation, structure and infrared properties of Sb2Te3 quantum dots[J]. Infrared and Laser Engineering, 2020, 49(1): 0103002-0103002(6). doi: 10.3788/IRLA202049.0103002

Research on the preparation, structure and infrared properties of Sb2Te3 quantum dots

doi: 10.3788/IRLA202049.0103002
  • Received Date: 2019-11-05
  • Rev Recd Date: 2019-12-15
  • Publish Date: 2020-01-28
  • Antimony telluride (Sb2Te3) is a new type of two-dimensional layered material, in this paper, the "top-down" ultrasonic exfoliation method was used to prepare antimony telluride quantum dots (Sb2Te3 QDs) for the first time, with antimony telluride powder as raw material, and N-methyl pyrrolidone (NMP) as the dispersant. A variety of characterizations(SEM, TEM, AFM, XPS, XRD, etc.) for the structure and morphology of the prepared Sb2Te3 QDs were performed. The optical properties of Sb2Te3 QDs were studied using UV-Vis, PL and PLE. It is found that the average particle size of the prepared Sb2Te3 QDs is 2.3 nm, and the average height is 1.9 nm, with a good dispersive particle size uniformity, the PL and PLE peaks have a redshift, both PL and PLE are dependent on the excitation wavelength and emission wavelength. It is also found that Sb2Te3 QDs has obvious absorption and photoluminescence in the infrared band. The results indicate that the ultrasonic exfoliation method is feasible to prepare Sb2Te3 QDs, the characteristics of the material show the potential application in infrared detector.
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    [3] Hu S, Tang R, Tian C, et al. The influence of thickness on the properties of Sb2Te3 thin films and its application in CdS/CdTe thin film solar cells[J]. Specialized Collections, 2011, 225-226:789-793.
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    [6] Hinsche N F, Zastrow S, Gooth J, et al. Impact of the topological surface state on the thermoelectric transport in Sb2Te3 thin films[J]. Acs Nano, 2015, 9(4):4406-4411.
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    [14] Zheng B, Xiao Z, Chhay B, et al. Thermoelectric properties of MeV Si ion bombarded Bi2Te3/Sb2Te3 superlattice deposited by magnetron sputtering[J]. Surface & Coatings Technology, 2009, 203(17):2682-2686.
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Research on the preparation, structure and infrared properties of Sb2Te3 quantum dots

doi: 10.3788/IRLA202049.0103002
  • 1. Key Laboratory of Advanced Technique&Preparation for Renewable Energy Materials, Solar Energy Research Institute, Ministry of Education, Yunnan Normal University, Kunming 650500, China;
  • 2. Kunming Institute of Physics, Kunming 650223, China;
  • 3. Yunnan Key Laboratory of Advanced Photoelectric Materials&Devices, Kunming 650223, China

Abstract: Antimony telluride (Sb2Te3) is a new type of two-dimensional layered material, in this paper, the "top-down" ultrasonic exfoliation method was used to prepare antimony telluride quantum dots (Sb2Te3 QDs) for the first time, with antimony telluride powder as raw material, and N-methyl pyrrolidone (NMP) as the dispersant. A variety of characterizations(SEM, TEM, AFM, XPS, XRD, etc.) for the structure and morphology of the prepared Sb2Te3 QDs were performed. The optical properties of Sb2Te3 QDs were studied using UV-Vis, PL and PLE. It is found that the average particle size of the prepared Sb2Te3 QDs is 2.3 nm, and the average height is 1.9 nm, with a good dispersive particle size uniformity, the PL and PLE peaks have a redshift, both PL and PLE are dependent on the excitation wavelength and emission wavelength. It is also found that Sb2Te3 QDs has obvious absorption and photoluminescence in the infrared band. The results indicate that the ultrasonic exfoliation method is feasible to prepare Sb2Te3 QDs, the characteristics of the material show the potential application in infrared detector.

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