Wavelength influence on the photodegradation of P3HT:PCBM organic solar cells

被引:30
作者
Corcoles, Laura [1 ,2 ]
Abad, Jose [2 ]
Padilla, Javier [2 ]
Urbina, Antonio [3 ]
机构
[1] Inst Ciencia Mat Barcelona ICMAB CSIC, Bellaterra 08193, Spain
[2] Tech Univ Cartagena UPCT, ETSII, Dept Appl Phys, Cartagena 30202, Spain
[3] Tech Univ Cartagena UPCT, Dept Elect, Cartagena 30202, Spain
关键词
P3HT:PCBM; Organic solar cells; Photodegradation; Stability; POLYMER-FULLERENE; CONJUGATED POLYMER; DEGRADATION; STABILITY; OXYGEN; STABILIZATION; PERFORMANCE; MORPHOLOGY; MECHANISM; LIFETIME;
D O I
10.1016/j.solmat.2015.06.023
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Stability of emerging organic and hybrid photovoltaic solar cells is still the main drawback for a market penetration of this technology. In this article, a study on the photodegradation of standard architecture P3HT:PCBM organic solar cells as a function of the incident radiation wavelength is presented. The organic solar cells were tested without encapsulation in order to accelerate the degradation process. By analyzing the evolution of power conversion efficiency and short circuit current as a function of the incident energy and number of photons, it was found that blue (400-510 nm) and ultraviolet (310-410 nm) wavelengths are the most harmful, latter being the radiation that induces a faster degradation of the devices. However, the additional contribution of the blue wavelength to degradation represents a significant problem, since this radiation generates an important part of the photocurrent. While adequate filters could avoid the UV degradation without a significant decrease in the organic solar cell performance, the impact of blue radiation reduction poses a more difficult challenge. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:423 / 428
页数:6
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