Effects of Impurities on Operational Mechanism of Organic Bulk Heterojunction Solar Cells

Photoconductive atomic force microscopy in conjunction with transient absorption spectroscopy and charge transport study were used to investigate the effect of impurities (TCNQ and PC84BM) on the performance of low band gap conjugated polymer and fullerene solar cells to gain insight into whether differing impurity shapes may lead to different loss mechanisms.

L. Kaake, X.-D. Dang, W. L. Leong, Y. Zhang, A. Heeger, and T.-Q. Nguyen
Advanced Materials
Volume: 25
Number: 12
Pages: 1706-1712
Date: March, 2013
ICB Affiliated Authors: Alan J Heeger, Thuc-Quyen Nguyen