Charge transport control via polymer polymorph modulation in ternary organic photovoltaic composites. Issue 4 (23rd December 2015)

• Record Type: Journal Article
• Authors: 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.
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 4(2016)
• Page Start: 1195
• Page End: 1201
• Publication Date: 2015-12-23
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c5ta08120c
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Tuning of the polymorph distribution in the electron-donating P3HT polymer and control of hole-mobility are enabled in ternary P3HT : PCBM : QBT composites. 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.