A new model for PCBM phase segregation in P3HT:PCBM blends

被引：18
作者：
Berriman, Garth A. [1 ]
Holmes, Natalie P. [1 ]
Holdsworth, John L. [1 ]
Zhou, Xiaojing [1 ]
Belcher, Warwick J. [1 ]
Dastoor, Paul C. [1 ]
机构：
[1] Univ Newcastle, Ctr Organ Elect, Callaghan, NSW 2308, Australia
来源：
ORGANIC ELECTRONICS | 2016年 / 30卷
关键词：
P3HT; PCBM; Polymer blends; Aggregation; Crystallisation; RANDOM CLOSE PACKING; POLYMER SOLAR-CELLS; SOLID-STATE; SMALL-ANGLE; P3HT/PCBM; MORPHOLOGY; POLY(3-HEXYLTHIOPHENE); CRYSTALLIZATION; SEPARATION; FILMS;
D O I：
10.1016/j.orgel.2015.12.014
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The phase segregation in P3HT:PCBM blend films has been investigated from an experimental and theoretical viewpoint. Optical microscopy, atomic force microscopy, scanning electron microscopy and X-ray diffraction show that thermal annealing of P3HT: PCBM blend films leads to the formation of PCBM aggregates. These aggregates are composed of dense randomly packed similar to 50 nm PCBM crystallites with an overall aggregate density of similar to 0.85 g cm(-3). By applying the critical radius of nucleation for PCBM and the Stokes-Einstein equation for mobility of PCBM in a P3HT matrix, a model is developed which explains the formation of both crystallites and aggregates. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：12 / 17
页数：6
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