Solution-processed amorphous niobium oxide as a novel electron collection layer for inverted polymer solar cells

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• 作者：Keisuke Hamada ; Naoya Murakami ; Toshiki Tsubota ; Teruhisa Ohno
• 刊名：Chemical Physics Letters
• 出版年：2013
• 出版时间：24 October, 2013
• 年：2013
• 卷：586
• 期：Complete
• 页码：81-84
• 全文大小：1008 K

文摘

Amorphous niobium oxide (NbO_x) as an electron collection layer in inverted polymer solar cells was prepared by a solution process. The power conversion efficiency of inverted polymer solar cells based on a blend of poly(3-hexylthiophene) and [6,6]-phenyl C₆₁ butyric acid methyl ester was improved to 2.22 % by inserting an NbO_x layer between the active layer and indium tin oxide electrode. An energy level diagram of component materials in the inverted polymer solar cell indicated that the NbO_x layer works as both an electron collection layer and hole blocking layer in polymer solar cells.