Formation of ZnSe/Bi{sub 2}Se{sub 3} QDs by surface cation exchange and high photothermal conversion

Journal Article · Sat Aug 15 00:00:00 EDT 2015 · AIP Advances

DOI:https://doi.org/10.1063/1.4929802· OSTI ID:22492330

Jia, Guozhi; Wang, Peng; Zhang, Yanbang ^[1]; Wu, Zengna; Li, Qiang; Yao, Jianghong ^[2]; Chang, Kai ^[3]

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1. School of science, Tianjin Chengjian University, Tianjin 300384 (China)
2. Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education, School of Physics and TEDA Applied Physics School, Nankai University, Tianjin 300457 (China)
3. Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083 (China)

Water-dispersed core/shell structure ZnSe/Bi{sub 2}Se{sub 3} quantum dots were synthesized by ultrasonicwave-assisted cation exchange reaction. Only surface Zn ion can be replaced by Bi ion in ZnSe quantum dots, which lead to the ultrathin Bi{sub 2}Se{sub 3} shell layer formed. It is significance to find to change the crystal of QDs due to the acting of ultrasonicwave. Cation exchange mechanism and excellent photothermal conversion properties are discussed in detail.

• OSTI ID: 22492330
• Journal Information: AIP Advances, Vol. 5, Issue 8; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
36 MATERIALS SCIENCE
BISMUTH IONS
BISMUTH SELENIDES
CRYSTALS
INTERFACES
ION EXCHANGE
LAYERS
QUANTUM DOTS
SURFACES
WATER
ZINC IONS
ZINC SELENIDES