Department of Physics, State Key Laboratory for Silicon Materials , Zhejiang University , Hangzhou 310027 , China.
Department of Chemistry , Zhejiang University , Hangzhou 310027 , China.
ACS Appl Mater Interfaces. 2019 Oct 23;11(42):39342-39350. doi: 10.1021/acsami.9b13154. Epub 2019 Oct 8.
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.
在这项工作中，提出了一种由具有闪锌矿 ZnTe 和岩盐 PbTe 不同晶格结构的新型异质结构。通过分子束外延生长 PbTe/ZnTe 异质结构。X 射线光电子能谱揭示了 PbTe/ZnTe 异质界面的 I 型能带排列。异质结构的界面表现出奇特的电学性质。然后，将新型异质结构用于开发高性能中红外光电探测器，该探测器表现出明显的响应率、快速响应速度和高探测率。新的光电探测器利用横向光伏效应，这有助于理解新型 PbTe/ZnTe 异质结构。
