Relationship between Microstructure and Photoelectron Behaviors of CdTe/ligand Self-assembly Quantum Dots
A water-soluble CdTe QDs capped by 3-Mercaptopropionic acid (MPA) were synthesized. The results confirmed that the grain size of the QDs was controlled by changing the reflux time of precursor solution and that the QDs possessed obviously quantum size effect. The results showed that a depletion layer CdTe1-xSx (0≤x≤1) formed in between CdTe nanoparticle and ligand MPA. It is believed that two heterojunction-like structures possess quite distinct surface photovoltaic characteristic excited between the core-CdTe and the shell-CdS, and between CdTe/CdS and the ligand MPA, respectively, according to the EFISPS results of the MPA-capped CdTe QDs.
CdTe QDs Microstructure Photoelectron Behaviors SPV spectroscopy
Weiyong Yang Kuiying Li Sailing Wei Guangjing Song Jan Zhang
State Key Lab of Metastable Materials Science and Technology, Yanshan University,Qinhuangdao 066004, State Key Lab of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
114-118
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）