High efficiency of CdSe quantum-dot-sensitized TiO2 inverse opal solar cells

作者：Lina Jaya Diguna, Qing Shen, Junya Kobayashi, Taro Toyoda · 发表于：Applied Physics Letters · 年份：2007 · DOI：10.1063/1.2757130 · 被引用次数：465 · 研究领域：Quantum Dots Synthesis And Properties、TiO2 Photocatalysis and Solar Cells、Advanced Photocatalysis Techniques

The authors have demonstrated an approach to sensitized-type solar cells, based on TiO2 inverse opal and the use of CdSe quantum dots (QDs) as sensitizers. CdSe QDs were grown in situ on TiO2 inverse opal electrodes, utilizing a chemical bath deposition method. All of the photovoltaic performances, including short circuit photocurrent density, open circuit voltage, fill factor, and efficiency, were significantly improved by surface modification with ZnS and fluoride ions. A power conversion efficiency of about 2.7% has been attained, under solar illumination of 100mW∕cm2. This value is relatively high for metal oxide solar cells, sensitized with semiconductor QDs.