CdSe Nanorods Dominate Photocurrent of Hybrid CdSe−P3HT Photovoltaic Cell

详细信息    查看全文

• 作者：Martin Schierhorn ; Shannon W. Boettcher ; Jeffrey H. Peet ; Elison Matioli ; Guillermo C. Bazan ; Galen D. Stucky ; Martin Moskovits
• 刊名：ACS Nano
• 出版年：2010
• 出版时间：October 26, 2010
• 年：2010
• 卷：4
• 期：10
• 页码：6132-6136
• 全文大小：289K
• 年卷期：0
• ISSN：1936-086X

文摘

Photovoltaic devices based on organic semiconductors require charge-separating networks (bulk heterojunctions) for optimal performance. Here we report on the fabrication of organic−inorganic photovoltaic devices with tailored (n-type) CdSe nanorod arrays aligned perpendicularly to the substrate. The nanorod lengths varied from 58 ± 12 to 721 ± 15 nm, while the diameters and inter-rod spacings were kept constant at 89.5 ± 7.5 and 41.3 ± 9.9 nm, respectively. Short-circuit densities improved linearly with nanorod length, resulting in power conversion efficiencies of up to 1.38% for cells with nanorods 612 ± 46 nm long. Notably, the cell’s efficiency was dominated by exciton generation in the CdSe nanorods.