Schottky barrier formation and band realignment of rare-earth tritelluride charge density wave material–semiconductor interfaces
Abstract
We investigated the formation of Schottky barriers at the interface between rare-earth tritelluride (RTe3) crystals and n-type silicon (n-Si) substrates. This study explores the rectifying characteristics of RTe3/n-Si junctions (R = Dy, Ho, Er) and their relation to the charge density wave (CDW) transition. Using the thermionic emission model, we analyzed current–voltage (I–V) measurements to obtain the Schottky barrier height (ϕSBH) and the ideality factor (η). The temperature dependence of the extracted ϕSBH and η reveals kink features near the CDW transition temperature. The Schottky–Mott model is employed to explain these kink features in the derivatives of ϕSBH and 1/η and attributes them to changes in the work function of RTe3 during the CDW transition. Our findings suggest that Schottky junctions can be utilized to probe the electronic states of RTe3, enabling potential RTe3 device applications in electronics and optoelectronics.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (13)
Kentaro Yumigeta
Department of Materials Science & Engineering, University of Arizona 1 , Tucson, Arizona 85721,
Jan Kopaczek
Materials Science and Engineering, Fulton Schools of Engineering, Arizona State University 1 , Tempe, Arizona 85287,
Rounak Banerjee
Seyed Tohid Rajaei Moosavy
Materials Science and Engineering, Fulton Schools of Engineering, Arizona State University 1 , Tempe, Arizona 85287,
Anvesh Yarra
Materials Science and Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University 2 , Tempe, Arizona 85287,
Blake Povilus
Materials Science and Engineering, Fulton Schools of Engineering, Arizona State University 1 , Tempe, Arizona 85287,
Hayley Ruddick
Materials Science and Engineering, Fulton Schools of Engineering, Arizona State University 1 , Tempe, Arizona 85287,
Renee Sailus
Materials Science and Engineering, Fulton Schools of Engineering, Arizona State University 1 , Tempe, Arizona 85287,
Mukesh Kumar
Graduate School of Human and Environmental Studies, Kyoto University, Yoshida Nihonmatsu Cho, Sakyo, Kyoto 606-8501, Japan
Sushant Lakhavade
Materials Science and Engineering, School for Engineering of Matter Transport of Energy, Arizona State University 1 , Tempe, Arizona 85287,
Yunbo Ou
Zafer Mutlu
Department of Materials Science & Engineering, University of Arizona 1 , Tucson, Arizona 85721,
Seth Ariel Tongay