Role of Solvent Trapping Effects in Determining the Structure and Morphology of Ternary Blend Organic Devices

被引：36

作者：

Burke, Kerry B. ^{[2
,3
]}

Belcher, Warwick J. ^{[2
]}

Thomsen, Lars ^{[2
,4
]}

Watts, Benjamin ^{[1
]}

McNeill, Christopher R. ^{[5
]}

Ade, Harald ^{[1
]}

Dastoor, Paul C. ^{[2
]}

机构：

[1] N Carolina State Univ, Dept Phys, Raleigh, NC USA

[2] Univ Newcastle, Ctr Organ Elect, Callaghan, NSW 2308, Australia

[3] CSIRO, Energy Ctr, Mayfield W, NSW 2304, Australia

[4] Australian Synchrotron Co Ltd, Clayton, Vic 3168, Australia

[5] Cavendish Lab, Cambridge CB3 0HE, England

来源：

MACROMOLECULES | 2009年 / 42卷 / 08期

基金：

英国工程与自然科学研究理事会; 澳大利亚研究理事会;

关键词：

PORPHYRIN; PHOTOCURRENT; COMPOSITES; MICROSCOPY; DYE;

D O I：

10.1021/ma802632y

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We present results of scanning transmission X-ray microscopy (STXM) measurements of bulk heterojunction organic solar cells built from a ternary blend of poly(3-hexylthiophene) (P3HT), [6,6]-phenyl-C61-butyric acid methyl ester (PCBM), and [2,3,12,13-tetracyano-5,10,15,20-tetrakis(3,5-di-tert-butylphenyl)porphyrinato]copper(II) (Cu(CN)(4)R porphyrin. These results show evidence of solvent trapping due to porphyrin in the film. Upon annealing, submicrometer depressions are observed in the ternary blend films, corresponding to the evolution of solvent that is associated with the small porphyrin aggregates that phase segregate in the middle of the depressions. The areal density and size of the depressions change systematically with porphyrin concentration in the ternary blend. The relationship of the observed morphologies to the previously measured device performance is discussed.

引用

页码：3098 / 3103

页数：6

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