| 학회 | 한국재료학회 |
| 학술대회 | 2020년 가을 (11/18 ~ 11/20, 휘닉스 제주 섭지코지) |
| 권호 | 26권 1호 |
| 발표분야 | C. 에너지 재료 분과 |
| 제목 | Optimization and Characterization of Spin-coated Tin Sulfide Thin-films for Solar Cell Application |
| 초록 | Recently, Tin sulfide (SnS) has attracted a lot of interest as a PV absorber material due to its potential for large-scale, cost-effective and environmentally friendly power generation. SnS benefits from favorable photovoltaic properties such as optical band gap (~1.3 eV) and a high optical absorption coefficient in the visible region (≥ 104 cm-1). However, to date, the highest efficiency obtained from the SnS-based solar cells is 4.8%, which is fairly low compared to its theoretical limit of ~32%. SnS is a non-cubic material unlike CIGS or CdTe, crystallizing in an orthorhombic structure. It easily leads to the formation of layered features. Therefore, controlling the morphology of the SnS absorber with dense and pinhole-free grains is crucial. In this study, SnS thin films were deposited using a simple and low-cost spin coating method for solar cell applications. The effect of annealing temperature and duration on the structural and morphological properties of deposited SnS films was studied using the XRD and SEM analysis for two different precursors. The precursor concentration and annealing temperature was observed to play a dominant role in determining the phase and morphological properties of the SnS thin films. The results obtained from X-ray diffraction revealed that the films annealed above 400 °C for one hour exhibit a pure SnS phase with the single (040) plane. The SEM study revealed that the films deposited by this method are exhibiting plate-like grain structure with some pinholes present on it. |
| 저자 | Pravin Pawar, Jaeyeong Heo |
| 소속 | Chonnam National Univ. |
| 키워드 | Tin sulfide (주석 황화물); Spin coating (스빈 코딩기); Single crystal (단결 정); Thin film solar cells (박막 태양 전지) |
