GeC/SiCx van der Waals heterojunction: Applications for water splitting and solar cell

被引：0

作者：

Ma, Zelong ^{[1
]}

Wang, Danni ^{[1
]}

Wang, Yu ^{[1
]}

Li, Songyang ^{[1
]}

Chen, Jingjun ^{[1
]}

Li, Xu ^{[1
]}

Bian, Baoan ^{[1
]}

Liao, Bin ^{[2
]}

机构：

[1] Jiangnan Univ, Sch Sci, Wuxi 214122, Peoples R China

[2] Beijing Normal Univ, Coll Nat Resources Sci & Technol, Beijing 100875, Peoples R China

来源：

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2024年 / 181卷

关键词：

2D materials; van der Waals heterojunction; First principle; Water splitting; Solar cell; BANDGAP; SILIGRAPHENE; GRAPHENE; MOBILITY;

D O I：

10.1016/j.mssp.2024.108611

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We construct GeC/SiCx(x = 1,2,7) van der Waals heterojunctions to study the photoelectric properties. The firstprinciple calculations show that three heterojunctions have the Z-type band alignment by analyzing the charge transfer paths. The designed heterojunctions possess good optical absorption in the visible light region, suggesting potential applications in photocatalysis, solar cells, and other photovoltaic devices. It is found that GeC/ SiC and GeC/SiC7 heterojunctions fulfill the requirements as photocatalysts from PH = 0 to PH = 14. Although the GeC/SiC2 heterojunction fulfills the requirements as a photocatalyst from PH = 6 to PH = 10, the GeC/SiC2based solar cell presents excellent performance, whose power conversion efficiency reaches 24.6 % theoretically. The results demonstrate that GeC/SiCx (x = 1, 2, 7) is a potential candidate for photocatalytic and solar cell materials in the future.

引用

页数：9

共 52 条

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