Charge transport control via polymer polymorph modulation in ternary organic photovoltaic composites

Kan, Zhipeng; Colella, Letizia; Canesi, Eleonora V.; Vorobiev, Alexei; Skrypnychuk, Vasyl; Terraneo, Giancarlo; Barbero, David R.; Bertarelli, Chiara; MacKenzie, Roderick C.I.; Keivanidis, Panagiotis E.

Abstract

The control on the charge transport properties of ternary organic photovoltaic P3HT?:?PCBM?:?QBT devices is enabled by modulating the distribution of P3HT polymorphs in the device photoactive layers. Negligible amounts of QBT induce striking modifications in the P3HT lamellar stacking direction, forming both densely packed and non-densely packed P3HT chains. The former reduce the charge carrier recombination rate, enabling an increased fill factor and short-circuit device photocurrent.

• Journal Article Type: Article
• Acceptance Date: Dec 10, 2015
• Online Publication Date: Dec 11, 2015
• Publication Date: Jan 28, 2016
• Deposit Date: Sep 20, 2018
• Publicly Available Date: Oct 30, 2018
• Print ISSN: 2050-7488
• Electronic ISSN: 2050-7496
• Publisher: Royal Society of Chemistry
• Peer Reviewed: Peer Reviewed
• Issue: 4
• Pages: 1195-1201
• DOI: https://doi.org/10.1039/c5ta08120c
• Public URL: https://nottingham-repository.worktribe.com/output/1107974
• Publisher URL: https://pubs.rsc.org/en/Content/ArticleLanding/2016/TA/C5TA08120C#!divAbstract