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Highly crystalline films of PCPDTBT with branched side chains by solvent vapor crystallization: Influence on opto-electronic properties
Author(s)
Fischer, Florian S.U.
Trefz, Daniel
Back, Justus
Tornow, Benjamin
Albrecht, Steve
Yager, Kevin G.
Singh, Gurpreet
Karim, Alamgir
Neher, Dieter
Brinkmann, Martin
Ludwigs, Sabine
Date Issued
February 18, 2015
Type
Article
Abstract
(Figure Presented) PCPDTBT, a marginally crystallizable polymer, is crystallized into a new crystal structure using solvent-vapor annealing. Highly ordered areas with three different polymer-chain orientations are identified using TEM/ED, GIWAXS, and polarized Raman spectroscopy. The optical and structural properties differ significantly from films prepared by standard device preparation protocols. Bilayer solar cells, however, show similar performance.
Citation
Advanced Materials, 27(7), 1223-1228, 2015