Synthesis of Copper Telluride Thin Films by Electrodeposition and Their Electrical and Thermoelectric Properties
- Authors
- Park, Jungjoon; Seo, Jinmyeong; Lim, Jae-Hong; Yoo, Bongyoung
- Issue Date
- Jan-2022
- Publisher
- FRONTIERS MEDIA SA
- Keywords
- copper telluride; electrodeposition; thermoelectric; compositional control; carrier filtering effect
- Citation
- FRONTIERS IN CHEMISTRY, v.10
- Journal Title
- FRONTIERS IN CHEMISTRY
- Volume
- 10
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/83458
- DOI
- 10.3389/fchem.2022.799305
- ISSN
- 2296-2646
- Abstract
- Intermetallic copper telluride thin films, which are important in a number of electronics fields, were electrodeposited using a potentiostatic method in low-pH aqueous electrolyte baths with various ion-source concentrations, and the electrical properties of the formed films were investigated after exfoliation from the substrate. The films were electrochemically analyzed by cyclic voltammetry, while surface and cross-sectional morphologies, compositional ratios, and electrical properties were analyzed by scanning electron microscopy, X-ray diffractometry, X-ray photoelectron spectroscopy, ultraviolet photoelectron spectroscopy, and Hall-effect experiments. The copper telluride thin films, which were synthesized at various potentials in each bath, exhibit different composition ratios and structures; consequently, they show a variety of electrical and thermoelectric properties, including different electrical conductivities, carrier concentrations, mobilities, and Seebeck coefficients. Among them, the thin film with a 1:1 Cu:Te ratio delivered the highest power factor due to carrier filtering at the interface between the two phases.
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Collections - 공과대학 > 신소재공학과 > 1. Journal Articles
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