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

• DOI: 10.1002/adma.201302991
• Publication Date: 2013-10-12T01:29:01Z
• Authors: Bo Ram Lee; Eui Dae Jung; Yun Seok Nam; Minbok Jung; Ji Sun Park; Seungjin Lee; Hyosung Choi; Seo‐Jin Ko; Na Ra Shin; Young‐Kuk Kim; Sang Ouk Kim; Jin Young Kim; Hyung‐Joon Shin; Shinuk Cho; Myoung Hoon Song
• Keywords: ORGANIC OPTOELECTRONIC DEVICES; OPEN-CIRCUIT VOLTAGE; CONJUGATED POLYELECTROLYTE; PHOTOVOLTAIC CELLS; INTERFACIAL LAYER; TITANIUM-OXIDE; SURFACE; DONOR; HETEROJUNCTIONS; ENHANCEMENT; 02 engineering and technology; 0210 nano-technology; 7. Clean energy; 01 natural sciences; 6. Clean water; 3. Good health; 0104 chemical sciences

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.