Optimization of charge carrier transport balance for performance improvement of PDPP3T-based polymer solar cells prepared using a hot solution

Physical Chemistry Chemical Physics : PCCP
Jian WangJian Zhang

Abstract

Polymer solar cells (PSCs), with poly(diketopyrrolopyrrole-terthiophene) (PDPP3T):[6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) as the active layers, were fabricated using solutions of different temperatures. The best power conversion efficiency (PCE) of the PSCs prepared using a hot solution was about 6.22%, which is better than 5.54% for PSCs prepared using cool (room temperature) solutions and 5.85% for PSCs prepared using cool solutions with a 1,8-diiodooctane (DIO) solvent additive. The underlying reasons for the improved PCE of the PSCs prepared using a hot solution could be attributed to the more dispersive donor and acceptor distribution in the active layer, resulting in a better bi-continuous interpenetrating network for exciton dissociation and charge carrier transport. An enhanced and more balanced charge carrier transport in the active layer is obtained for the PSCs prepared using a hot solution, which can be determined from the J-V curves of the related hole-only and electron-only devices.

References

Aug 6, 2011·ACS Applied Materials & Interfaces·Haijun FanXiaowei Zhan
Nov 5, 2013·ACS Applied Materials & Interfaces·Chang LiuYong Cao
Mar 5, 2014·Physical Chemistry Chemical Physics : PCCP·Sebastian Albert-SeifriedRichard H Friend
Apr 18, 2014·Advanced Materials·Frederik C KrebsMikkel Jørgensen

❮ Previous
Next ❯

Citations

Oct 21, 2016·Angewandte Chemie·Bingqing ZhangCan Li

❮ Previous
Next ❯

Related Concepts

Related Feeds

Adult Stem Cells

Adult stem cells reside in unique niches that provide vital cues for their survival, self-renewal, and differentiation. They hold great promise for use in tissue repair and regeneration as a novel therapeutic strategies. Here is the latest research.