Formation of ZnSe/Bi2Se3 QDs by surface cation exchange and high photothermal conversion
Guozhi Jia,
Peng Wang,
Zengna Wu,
Qiang Li,
Yanbang Zhang,
Jianghong Yao,
Kai Chang
Affiliations
Guozhi Jia
School of science, Tianjin Chengjian University, Tianjin 300384, China
Peng Wang
School of science, Tianjin Chengjian University, Tianjin 300384, China
Zengna Wu
Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education, School of Physics and TEDA Applied Physics School, Nankai University, Tianjin 300457, China
Qiang Li
Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education, School of Physics and TEDA Applied Physics School, Nankai University, Tianjin 300457, China
Yanbang Zhang
School of science, Tianjin Chengjian University, Tianjin 300384, China
Jianghong Yao
Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education, School of Physics and TEDA Applied Physics School, Nankai University, Tianjin 300457, China
Kai Chang
Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083, China
Water-dispersed core/shell structure ZnSe/Bi2Se3 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 Bi2Se3 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.
