Lattice-Mismatched PbTe/ZnTe eterostructure with High-Speed Midinfrared Photoresponses
Lattice-Mismatched PbTe/ZnTe eterostructure with High-Speed Midinfrared Photoresponses
复制标题
具有高速中红外光响应的晶格失配 PbTe/ZnTe 异质结构
DOI：
10.1021/acsami.9b13154
复制
发表时间：
2019
影响因子：
9.5
通讯作者：
Wu Huizhen
中科院分区：
文献类型：
--
作者：
Ma Songsong;Li Kai;Xu Hanlun;Zhu Jiaqi;Zhu Haiming;Wu Huizhen
In this work, a novel heterostructure consisting of different lattice structures with zincblende ZnTe and rock-salt PbTe is proposed. The PbTe/ZnTe heterostructures are grown by molecular beam epitaxy. Type-I band alignment at the PbTe/ZnTe heterointerface is revealed by X-ray photoelectron spectroscopy. The interface of the heterostructure exhibits exotic electrical properties. The novel heterostructure is then implemented to develop high-performance mid-infrared photodetectors which demonstrate pronounced responsivity, swift response speed, and high detectivity. The new photodetectors utilize the lateral photovoltaic effect which facilitates the understanding of the novel PbTe/ZnTe heterostructures.
