Improving efficiencies by modulating the central metal ion in porphyrin-oligothiophene-mediated P3HT/PCBM organic solar cells

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• 作者：Dani M. Lyons ; Jurgen Kesters ; Wouter Maes ; Christopher W. Bielawski ; Jonathan L. Sessler
• 关键词：Porphyrins ; Organic photovoltaics ; Bulk heterojunctions ; Ternary blends
• 刊名：Synthetic Metals
• 出版年：2013
• 出版时间：15 August, 2013
• 年：2013
• 卷：178
• 期：Complete
• 页码：56-61
• 全文大小：1217 K

文摘

The power conversion efficiencies of poly(3-hexylthiophene)/[6,6]-phenyl-C₆₁-butyric acid methyl ester (P3HT/PCBM) bulk heterojunction organic solar cells were increased through the addition of small amounts (1-10 % ) of metalloporphyrin-oligothiophene conjugates. The effectiveness of these porphyrin additives was found to increase in the order free-base < Co < Zn < Ni < Cu, with the efficiency being enhanced by up to 17 % for the terthiophene-substituted Cu(II)-porphyrin, pointing to an important effect of the metal center.