中国物理B ›› 2014, Vol. 23 ›› Issue (8): 88803-088803.doi: 10.1088/1674-1056/23/8/088803

• SPECIAL TOPI—International Conference on Nanoscience & Technology, China 2013 • 上一篇    下一篇

Photoinduced degradation of organic solar cells with different microstructures

路春希a b, 闫鹏b, 王金泽b, 刘爱民a c, 宋德d, 江潮b   

  1. a College of New Energy, Bohai University, Jinzhou 121013, China;
    b CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, China;
    c School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024, China;
    d Department of Physics, Science College, Changchun University of Science and Technology, Changchun 130022, China
  • 收稿日期:2013-09-04 修回日期:2013-12-18 出版日期:2014-08-15 发布日期:2014-08-15
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant No. 2011CB932801) and the New Teachers' Fund for Doctor Stations, Ministry of Education, China (Grant No. 20112216120008).

Photoinduced degradation of organic solar cells with different microstructures

Lu Chun-Xi (路春希)a b, Yan Peng (闫鹏)b, Wang Jin-Ze (王金泽)b, Liu Ai-Min (刘爱民)a c, Song De (宋德)d, Jiang Chao (江潮)b   

  1. a College of New Energy, Bohai University, Jinzhou 121013, China;
    b CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, China;
    c School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024, China;
    d Department of Physics, Science College, Changchun University of Science and Technology, Changchun 130022, China
  • Received:2013-09-04 Revised:2013-12-18 Online:2014-08-15 Published:2014-08-15
  • Contact: Jiang Chao E-mail:jiangch@nanoctr.cn
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant No. 2011CB932801) and the New Teachers' Fund for Doctor Stations, Ministry of Education, China (Grant No. 20112216120008).

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摘要： An in situ measurement setup is established to investigate the photoinduced degradation effects in a controllable inert gas ambient environment for the two different microstructures of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyricacid methyl ester (PCBM) bulk-heterojunction organic solar cells. The two devices are fabricated with the solvent vapor drying process followed by a thermal annealing (vapor drying device) and only a normal thermal annealing process (control device), respectively. Their power conversion efficiencies (PCEs) and aging features are compared. Their different degradation behaviors in light absorption are confirmed. In addition, irradiation-induced changes in both nanostructure and surface morphology of the P3HT:PCBM blend films treated with two different fabrication processes are observed through scanning electron microscopy and atomic force microscopy. Aggregated bulbs are observed at the surfaces for control devices after light irradiation for 50 h, while the vapor drying devices exhibit smooth film surfaces, and the corresponding device features are not easy to degrade under the aging measurement. Thus the devices having solvent vapor drying and thermal annealing show better device stabilities than those having only the thermal annealing process.

关键词: organic solar cells, photodegradation, solvent vapor drying, stability

Abstract: An in situ measurement setup is established to investigate the photoinduced degradation effects in a controllable inert gas ambient environment for the two different microstructures of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyricacid methyl ester (PCBM) bulk-heterojunction organic solar cells. The two devices are fabricated with the solvent vapor drying process followed by a thermal annealing (vapor drying device) and only a normal thermal annealing process (control device), respectively. Their power conversion efficiencies (PCEs) and aging features are compared. Their different degradation behaviors in light absorption are confirmed. In addition, irradiation-induced changes in both nanostructure and surface morphology of the P3HT:PCBM blend films treated with two different fabrication processes are observed through scanning electron microscopy and atomic force microscopy. Aggregated bulbs are observed at the surfaces for control devices after light irradiation for 50 h, while the vapor drying devices exhibit smooth film surfaces, and the corresponding device features are not easy to degrade under the aging measurement. Thus the devices having solvent vapor drying and thermal annealing show better device stabilities than those having only the thermal annealing process.

Key words: organic solar cells, photodegradation, solvent vapor drying, stability

中图分类号:  (Organic photovoltaics)

  • 88.40.jr
73.43.Fj (Novel experimental methods; measurements) 42.60.Lh (Efficiency, stability, gain, and other operational parameters)