Dielectric Confinement Effect on Calculating the Band Gap of PbSe Quantum Dots

作     者：程文超 张铁强 张宇 Wen-chao Cheng;Tie-qiang Zhang;Yu Zhang

作者机构：吉林大学电子科学与工程学院集成光电子国家重点实验室长春130012 吉林大学物理学院超硬国家级重点实验室长春130012 

出 版 物：《Chinese Journal of Chemical Physics》 (化学物理学报（英文）)

年 卷 期：2011年第24卷第2期

页      面：162-166,I0003页

核心收录：

学科分类：07[理学] 

基　　金：国家863计划 

主　　题：Dielectric confinement effect PbSe Band gap 

摘      要：Considering the dielectric confinement effect on excitonics of PbSe quantum dots （QDs）, a correction factor in the wave function was introduced to propose a new band gap calculation model for QDs. The modified model showed great consistency with the experimental data, especially in small size range. According to the variation of confined barrier, the band gap calculation model of PbSe QDs was analyzed in different solvents. The calculating results showed that the modified model was almost solvent-independent, which was consistent with our experimental results and related reports.