Enhancing the Efficiency of Bulk Heterojunction Solar Cells via Templated Self-Assembly

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• 作者：Cheng Pan ; Hongfei Li ; Bulent Akgun ; Sushil K. Satijia ; Yimei Zhu ; Di Xu ; Joseph Ortiz ; Dilip Gersappe ; Miriam H. Rafailovich
• 刊名：Macromolecules
• 出版年：2013
• 出版时间：March 12, 2013
• 年：2013
• 卷：46
• 期：5
• 页码：1812-1819
• 全文大小：660K
• 年卷期：v.46,no.5(March 12, 2013)
• ISSN：1520-5835

文摘

Morphology control in bulk heterojunction (BHJ) solar cell is considered to be critical for the power conversion efficiency (PCE). In this paper, we present a novel approach that introduces polystyrene that organizes the poly(3-hexylthiophene) (P3HT) into columnar phases decorated by [6,6]-phenyl C₆₁-butyric acid methyl ester (PCBM) at the interface. This structure represents a realization of an idealized morphology of an organic solar cell, in which both exiciton dissociation and the carrier transport are optimized, leading to increased power conversion efficiency.