Modeling on the size dependent properties of InP quantum dots: a hybrid functional study

被引：69

作者：

Cho, Eunseog ^{[1
]}

Jang, Hyosook ^{[1
]}

Lee, Junho ^{[1
]}

Jang, Eunjoo ^{[1
]}

机构：

[1] Samsung Elect Co, Samsung Adv Inst Technol, Adv Mat Res Ctr, Yongin 449712, Gyeonggi Do, South Korea

来源：

NANOTECHNOLOGY | 2013年 / 24卷 / 21期

关键词：

NANOCRYSTALS;

D O I：

10.1088/0957-4484/24/21/215201

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Theoretical calculations based on density functional theory were performed to provide better understanding of the size dependent electronic properties of InP quantum dots (QDs). Using a hybrid functional approach, we suggest a reliable analytical equation to describe the change of energy band gap as a function of size. Synthesizing colloidal InP QDs with 2-4 nm diameter and measuring their optical properties was also carried out. It was found that the theoretical band gaps showed a linear dependence on the inverse size of QDs and gave energy band gaps almost identical to the experimental values.

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页数：5

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