Effect of Sm doping into CuInTe2 on cohesive energy before and after light absorption

被引：6

作者：

Wang, Tai ^{[1
]}

Guo, Yong-Quan ^{[1
]}

Wang, Cong ^{[1
]}

机构：

[1] North China Elect Power Univ, Sch Energy Power & Mech Engn, Beijing 102206, Peoples R China

来源：

CHINESE PHYSICS B | 2021年 / 30卷 / 04期

关键词：

CuIn1-x Sm x Te2; empirical electron theory (EET); light absorption bandgap; hybridization energy; VALENCE ELECTRON STRUCTURES; MAGNETIC-PROPERTIES; OPTICAL-PROPERTIES; MECHANISM; PHASE; MODEL;

D O I：

10.1088/1674-1056/abd167

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effects of Sm doping into CuInTe2 chalcopyrite on the cohesive energy before and after light absorption are systematically investigated by the empirical electron theory (EET) of solids and molecules. The results show that the static energy of CuIn1 - x Sm x Te2 decreases with Sm content increasing due to the valence electronic structure modulated by doping Sm into CuIn1 - x Sm x Te2. The calculated optical absorption transition energy from the static state to the excited energy level in CuIn1 - x Sm x Te2 accords well with the experimental absorption bandgap of CuIn1 - x Sm x Te2. Moreover, it is found that the energy bandgap of CuIn1 - x Sm x Te2 is significantly widened with Sm content increasing due to its special valent electron structure, which is favorable for enhancing the light absorption in a wider range and also for the potential applications in solar cells.

引用

页数：8

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