Influence of Interface Morphology onto the Photovoltaic Properties of Nanopatterned ZnO/Poly(3-hexylthiophene) Hybrid Solar Cells. An Impedance Spectroscopy Study

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• 作者：Bert Conings ; Linny Baeten ; Hans-Gerd Boyen ; Donato Spoltore ; Jan D鈥橦aen ; Lars Grieten ; Patrick Wagner ; Marlies K. Van Bael ; Jean V. Manca
• 刊名：Journal of Physical Chemistry C
• 出版年：2011
• 出版时间：August 25, 2011
• 年：2011
• 卷：115
• 期：33
• 页码：16695-16700
• 全文大小：843K
• 年卷期：v.115,no.33(August 25, 2011)
• ISSN：1932-7455

文摘

This paper focuses on the characterization of the ZnO/poly(3-hexylthiophene) (P3HT) interfaces in nanostructured hybrid solar cells, aiming to elucidate the relationship between thermal treatment, local morphology, and device performance. An equivalent impedimetric model for the device is proposed, allowing us to extract information about the ZnO/P3HT interface morphology and its impact on the photovoltaic properties by comparing devices with and without nanopatterning. It is found that the influence of thermal treatment on performance lies solely in the interface, resulting from a different interfacial morphology of P3HT depending on which crystal direction of ZnO is present.