| 학회 | 한국재료학회 |
| 학술대회 | 2021년 봄 (05/12 ~ 05/14, 광주 김대중컨벤션센터) |
| 권호 | 27권 1호 |
| 발표분야 | C. 에너지 재료 분과 |
| 제목 | Effect of Annealing and Precursor Concentration on Spin-coated Tin Sulfide Thin-films for Solar Cell Application |
| 초록 | Among the p-type chalcogenides family, orthorhombic tin sulfide (α–SnS) has recently emerged as a promising absorber layer for a photovoltaic device application due to its suitable optical bandgap of ~1.32 eV and high optical absorption coefficient of ˃ 105 cm-1. Despite of having great absorber properties, the highest efficiency obtained from the SnS-based TFSCs 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 present study demonstrated the deposition of SnS thin films on soda-lime glass (SLG) and SLG/Mo substrates. The developed films were subsequently applied for the fabrication of a thin-film solar cell. The effect of the annealing temperature on the structural, optical, and morphological properties of the deposited SnS films was analyzed. The precursor concentrations and the annealing temperature played a critical role in determining the phase composition and morphological characteristics of the SnS thin films. The results obtained from X-ray diffraction revealed that the films annealed above 300 °C for one hour exhibit a pure SnS phase with the single (040) plane. TFSC with SLG/Mo/SnS/CdS/i-ZnO/AZO/Al configuration was fabricated using the optimal precursor ratio, i.e., Sn:S = 1:1.2, and this device showed a photoconversion efficiency of 0.076%. |
| 저자 | Pravin Pawar, 허재영 |
| 소속 | 전남대 |
| 키워드 | SnS; Thin film solar cell; Spin coating; Optical properties; Structural properties |
