2025-06-26 ミシガン工科大学（Michigan Tech）
＜関連情報＞
- https://www.mtu.edu/unscripted/2025/06/solar-cells-back-to-the-basics-forward-to-the-future.html
- https://pubs.acs.org/doi/10.1021/acsaem.5c00612
サステイナブル酸化物薄膜を用いた高効率量子ドット太陽電池 Efficient Quantum Dot Solar Cells with Sustainable Oxide Thin Films
Amit Acharya,Mingxiao Ye,Jeff Kabel,Sambhawana Sharma,Anjana Asthana,Kumar Neupane,Join Uddin,Dongyan Zhang,and Yoke Khin Yap
ACS Applied Energy Materials Published: June 9, 2025
DOI:https://doi.org/10.1021/acsaem.5c00612
Abstract
Thin-film solar cells are more promising for low-cost and large-area photovoltaic devices. Tremendous efforts have been invested in using cadmium telluride (CdTe), copper indium gallium selenide (CIGS), and perovskite thin films for energy harvesting. In contrast, zinc oxide (ZnO) and molybdenum trioxides (MoO3) are relatively earth-abundant, environmentally stable, and sustainable for thin-film solar cells. ZnO nanostructures have recently gained success in producing effective (∼8.55%) quantum dot solar cells (QDSCs). While nanostructures offer high surface areas to receive electrons from quantum dots (QDs), they are dominated by surface dangling bonds. These defects can trap electrons and limit effective transport at the interface between the ZnO nanostructures and QDs. We anticipate that QDSCs based on thin-film materials can minimize such interface trapping states and be more efficient than those demonstrated with ZnO nanostructures. We strategically develop quality ZnO and MoO3 thin films to produce QDSCs with power conversion efficiency as high as 11.4%. Our approach will inspire others to use scalable thin-film technology and QDs for solar energy harvesting based on sustainable ZnO and MoO3.
