Amine-Based Polar Solvent Treatment for Highly Efficient Inverted Polymer Solar Cells

• Published in: Advanced materials (Weinheim) Vol. 26; no. 3; pp. 494 - 500
• Main Authors: Lee, Bo Ram, Jung, Eui Dae, Nam, Yun Seok, Jung, Minbok, Park, Ji Sun, Lee, Seungjin, Choi, Hyosung, Ko, Seo-Jin, Shin, Na Ra, Kim, Young-Kuk, Kim, Sang Ouk, Kim, Jin Young, Shin, Hyung-Joon, Cho, Shinuk, Song, Myoung Hoon
• Format: Journal Article
• Language: English
• Published: Germany Blackwell Publishing Ltd 22.01.2014
• Subjects: Contact; ethanolamine; inverted polymer solar cells (iPSCs); inverted polymer solar cells (iPSCs); polar solvents; PTB7; zinc oxide; polar solvents; PTB7; ripple structure (ZnO-R); ripple structure (ZnO‐R); ethanolamine; zinc oxide; inverted polymer solar cells (iPSCs); polar solvents; PTB7; zinc oxide; ripple structure (ZnO-R); ethanolamine
• ISSN: 0935-9648; 1521-4095
• DOI: 10.1002/adma.201302991

The interfacial dipolar polarization in inverted structure polymer solar cells, which arises spontaneously from the absorption of ethanolamine end groups, such as amine and hydroxyl groups on ripple‐structure zinc oxide (ZnO‐R), lowers the contact barrier for electron transport and extraction and leads to enhanced electron mobility, suppression of bimolecular recombination, reduction of the contact resistance and series resistance, and remarkable enhancement of the power conversion efficiency.