In-Operando Study of the Effects of Solvent Additives on the Stability of Organic Solar Cells Based on PTB7-Th:PC71BM

被引：70

作者：

Yang, Dan ^{[1
]}

Loehrer, Franziska C. ^{[1
]}

Koerstgens, Volker ^{[1
]}

Schreiber, Armin ^{[1
]}

Bernstorff, Sigrid ^{[2
]}

Buriak, Jillian M. ^{[3
]}

Mueller-Buschbaum, Peter ^{[1
,4
]}

机构：

[1] Tech Univ Munich, Phys Dept, Lehrstuhl Funkt Mat, James Franck Str 1, D-85748 Garching, Germany

[2] Elettra Sincrotrone Trieste SCpA, Str Statale 14 Km 163-5,AREA Sci Pk, I-34149 Trieste, Italy

[3] Univ Alberta, Dept Chem, Edmonton, AB T6G 2G2, Canada

[4] Tech Univ Munich, Heinz Maier Leibnitz Zentrum MLZ, Lichtenbergstr 1, D-85748 Garching, Germany

来源：

ACS ENERGY LETTERS | 2019年 / 4卷 / 02期

关键词：

HIGH-EFFICIENCY; MORPHOLOGICAL DEGRADATION; PHOTOVOLTAIC CELLS; EXCITON DIFFUSION; PHASE-SEPARATION; PERFORMANCE; REFLECTION; CATHODE; ENABLES; VOLTAGE;

D O I：

10.1021/acsenergylett.8b02311

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Degradation of organic solar cells is among the fundamental problems that hinder their successful breakthrough. We probe in-operando the degradation behavior of organic solar cells based on the high-efficiency low-bandgap benzodithiophene copolymer PTB7-Th and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM). The influence of the solvent additives 1,8-diiodooctane and o-chlorobenzaldehyde on the degradation mechanism is studied with in situ grazing incidence small-angle X-ray scattering during operation. Changes in the IV characteristics are correlated for the first time in situ with changes in the morphology showing that the use of a solvent additive causes a change in device degradation.

引用

页码：464 / 470

页数：13

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