异质结
杰纳斯
钙钛矿(结构)
接口(物质)
光电子学
材料科学
偶极子
实现(概率)
吸收(声学)
纳米技术
化学
结晶学
复合材料
毛细管作用
有机化学
统计
数学
毛细管数
作者
Jing Li,Xiangyu Guo,Xuemin Hu,Wei Wang,Yuanyuan Tai,Min Xie,Zhi Li,Shengli Zhang,Haibo Zeng
标识
DOI:10.1016/j.apsusc.2023.156626
摘要
The flexibility and versatility is crucial for the perovskite-based heterostructure to realize multifunctional integration, while it is hard to be achieved in the conventional systems. Herein, we propose an interface engineering strategy, which utilizes the structural characteristics of perovskite and the mirror asymmetry of 2D Janus material to realize the multifunction of CsPbBr3/Janus MoSSe heterostructure. We demonstrate that type-Ⅰ and type-II band alignment can be achieved simultaneously in CsPbBr3/Janus MoSSe heterostructure by modulating the atomic terminal contacts. The underlying mechanism is that the band alignment can be shifted by the interface dipole and its induced interface potential step. The interface effect renders CsPbBr3/Janus MoSSe heterostructure an adjustable band gaps and band types, and an improved light absorption range and intensity in the visible and ultraviolet regions. More promisingly, we find that gate voltage regulation can also realize the transition of band alignment from intrinsic type-II to type-I or type-III for CsBr-T/SMoSe heterostructure. These findings enrich the functionality of perovskite-based heterostructures and provide more possibilities for realizing high-efficiency multifunctional nanodevices.
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