| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alloys and Compounds for Thermoelectric and Solar Cell Applications XI
|
| Presentation Title |
Enhancing the SnS-Based Solar Cells by Crystallographic Orientation Engineering and Interfacial Band Alignment Using an Eco-friendly Zinc-Tin-Oxide Buffer Layer |
| Author(s) |
Li-Chyong Chen, Thi-Thong Ho, Zi-Liang Yang, Fang-Yu Fu, Efat Jokar, Shaham Quadir, Kuei-Hsien Chen |
| On-Site Speaker (Planned) |
Li-Chyong Chen |
| Abstract Scope |
Tin monosulfide (SnS) is a promising light-harvesting material for environmental-friendly earth-abundant photovoltaics. However, SnS exhibits orthorhombic structure with a highly anisotropic charge transport behavior. Tailoring the crystallographic orientation of the SnS absorber layer plays a critical role in enhancing the transfer of charge carriers and the power conversion efficiency. Moreover, the energy band alignment between SnS and buffer layer remains the key concern in achieving highly efficient SnS-based solar cells. Herein, we demonstrate a facile method of controlling crystal growth orientation and the great potential of a zinc-tin-oxide (ZTO) buffer layer to achieve suitable band alignment at the SnS/buffer layer interface. Particularly, the influence of the Zn-to-Sn ratio in ZTO on cell performance was systematically investigated. The determination of band offsets in the heterostructures by using X-ray photoelectron spectroscopy and cross-sectional scanning tunneling microscopy proved that the appropriate heterojunction was successfully formed with the ZTO with 18% Sn content. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Electronic Materials, Energy Conversion and Storage, Thin Films and Interfaces |