Optimization of Sulfide Annealing Conditions for Ag8SnS6 Thin Films

Autor: Ryuki Munekata, Tomohiro Uchimura, Hideaki Araki, Ayaka Kanai, Kunihiko Tanaka, Tomoichiro Okamoto, Yoji Akaki
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Materials, Vol 16, Iss 18, p 6289 (2023)
Druh dokumentu: article
ISSN: 1996-1944
39644405
DOI: 10.3390/ma16186289
Popis: Ag8SnS6 (ATS) has been reported to have a band gap of 1.33 eV and is expected to be a suitable material for the light-absorbing layers of compound thin-film solar cells. However, studies on solar cells that use ATS are currently lacking. The objective of this study is to obtain high-quality ATS thin films for the realization of compound thin-film solar cells using vacuum deposition and sulfide annealing. First, glass/SnS/Ag stacked precursors are prepared by vacuum deposition. Subsequently, they are converted to the ATS phase via sulfide annealing, and various process conditions, namely, annealing time, annealing temperature, and number of steps, are studied. By setting the heat treatment temperature at 550 °C and the heat treatment time at 60 min, a high-quality ATS thin film could be obtained. Multi-step heat treatment also produces thin films with nearly no segregation or voids.
Databáze: Directory of Open Access Journals
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