Enhanced regeneration of degraded polymer solar cells by thermal annealing

被引：15

作者：

Kumar, Pankaj ^{[1
,2
]}

Bilen, Chhinder ^{[2
]}

Feron, Krishna ^{[2
,3
]}

Zhou, Xiaojing ^{[2
]}

Belcher, Warwick J. ^{[2
]}

Dastoor, Paul C. ^{[2
]}

机构：

[1] CSIR Natl Phys Lab, New Delhi 110012, India

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

[3] CSIRO Energy Technol, Newcastle, NSW 2300, Australia

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 19期

关键词：

POWER CONVERSION EFFICIENCY; DEGRADATION; OXYGEN; WATER; LAYER;

D O I：

10.1063/1.4878408

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The degradation and thermal regeneration of poly(3-hexylethiophene) (P3HT):[ 6,6]-phenyl-C-61-butyric acid methyl ester (PCBM) and P3HT:indene-C-60 bisadduct (ICBA) polymer solar cells, with Ca/Al and Ca/Ag cathodes and indium tin oxide/poly(ethylene-dioxythiophene):polystyrene sulfonate anode have been investigated. Degradation occurs via a combination of three primary pathways:(1) cathodic oxidation, (2) active layer phase segregation, and (3) anodic diffusion. Fully degraded devices were subjected to thermal annealing under inert atmosphere. Degraded solar cells possessing Ca/Ag electrodes were observed to regenerate their performance, whereas solar cells having Ca/Al electrodes exhibited no significant regeneration of device characteristics after thermal annealing. Moreover, the solar cells with a P3HT:ICBA active layer exhibited enhanced regeneration compared to P3HT:PCBM active layer devices as a result of reduced changes to the active layer morphology. Devices combining a Ca/Ag cathode and P3HT:ICBA active layer demonstrated similar to 50% performance restoration over several degradation/regeneration cycles. (c) 2014 AIP Publishing LLC.

引用

页数：5

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