Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Influence of Annealing Temperature on Crystal Orientation of Electrodeposited Sb2Se3 Thin-Film Photovoltaic Absorbers

  • Kim, Seonghyun (Department of Materials Science and Engineering, Pusan National University) ;
  • Lee, Seunghun (Department of Materials Science and Engineering, Pusan National University) ;
  • Park, Jaehan (Department of Materials Science and Engineering, Pusan National University) ;
  • Kim, Shinho (Innovative Graduate Education Program for Global High-tech Materials and Parts, Pusan National University) ;
  • Kim, Yangdo (Department of Materials Science and Engineering, Pusan National University)
  • Received : 2022.04.04
  • Accepted : 2022.05.17
  • Published : 2022.05.27
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Abstract

This study demonstrates a different approach method to fabricate antimony selenide (Sb2Se3) thin-films for the solar cell applications. As-deposited Sb2Se3 thin-films are fabricated via electrodeposition route and, subsequently, annealed in the temperature range of 230 ~ 310℃. Cyclic voltammetry is performed to investigate the electrochemical behavior of the Sb and Se ions. The deposition potential of the Sb2Se3 thin films is determined to be -0.6 V vs. Ag/AgCl (in 1 M KCl), where the stoichiometric composition of Sb2Se3 appeared. It is found that the crystal orientations of Sb2Se3 thin-films are largely dependent on the annealing temperature. At an annealing temperature of 250 ℃, the Sb2Se3 thin-film grew most along the c-axis [(211) and/or (221)] direction, which resulted in the smooth movement of carriers, thereby increasing the carrier collection probability. Therefore, the solar cell using Sb2Se3 thin-film annealed at 250 ℃ exhibited significant enhancement in JSC of 10.03 mA/cm2 and a highest conversion efficiency of 0.821 % because of the preferred orientation of the Sb2Se3 thin film.

Keywords

Acknowledgement

This work was supported by a 2-year Research Grant of Pusan National University

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