1. Charge transport control via polymer polymorph modulation in ternary organic photovoltaic composites
- Author
-
Panagiotis E. Keivanidis, Giancarlo Terraneo, Vasyl Skrypnychuk, Alexei Vorobiev, Roderick C. I. MacKenzie, Chiara Bertarelli, Eleonora Valeria Canesi, Zhipeng Kan, David R. Barbero, Letizia Colella, and Κεϊβανίδης, Παναγιώτης Ε.
- Subjects
Solid-state chemistry ,Materials science ,Stacking ,Is-enabled ,Nanotechnology ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,Fill factor ,Photoactive layers ,General Materials Science ,Lamellar structure ,Renewable Energy ,Charge carrier recombination ,Photocurrent ,chemistry.chemical_classification ,Sustainability and the Environment ,Renewable Energy, Sustainability and the Environment ,Chemistry (all) ,General Chemistry ,Polymer ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,Chemical engineering ,chemistry ,Modulation ,Organic photovoltaics ,Chemical Sciences ,Materials Science (all) ,Charge carrier ,0210 nano-technology ,Ternary operation ,Natural Sciences ,Transport control - 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.
- Published
- 2016