Effects of annealing rate and morphology of sol-gel derived ZnO on the performance of inverted polymer solar cells

The effects of annealing rate and morphology of sol–gel derived zinc oxide （ZnO） thin films on the performance of inverted polymer solar cells （IPSCs） are investigated. ZnO films with different morphologies are prepared at different annealing rates and used as the electron transport layers in IPSCs....

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Published inChinese physics B Vol. 22; no. 11; pp. 664 - 668
Main Author 余璇 胡子阳 黄振华 于晓明 张建军 赵庚申 赵颖
Format Journal Article
LanguageEnglish
Published 01.11.2013
Subjects
Annealing
Atomic force microscopy
Devices
Morphology
Photovoltaic cells
Sol gel process
Solar cells
Zinc oxide
ZnO薄膜
太阳能电池
形态
快速退火
溶胶
电池性能
聚合物
速率
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Summary:The effects of annealing rate and morphology of sol–gel derived zinc oxide （ZnO） thin films on the performance of inverted polymer solar cells （IPSCs） are investigated. ZnO films with different morphologies are prepared at different annealing rates and used as the electron transport layers in IPSCs. The undulating morphologies of ZnO films fabricated at annealing rates of 10 ℃/min and 3 ℃/min each possess a rougher surface than that of the ZnO film fabricated at a fast annealing rate of 50 ℃/min. The ZnO films are characterized by atomic force microscopy （AFM）, optical transmittance measurements, and simulation. The results indicate that the ZnO film formed at 3 ℃/min possesses a good-quality contact area with the active layer. Combined with a moderate light-scattering, the resulting device shows a 16% improvement in power conversion efficiency compared with that of the rapidly annealed ZnO film device.
Bibliography:Yu Xuan, Hu Zi-Yang, Huang Zhen-Hua, Yu Xiao-Ming, Zhang Jian-Jun, Zhao Geng-Shen, Zhao Ying（ Institute of Photo-electronic Thin Film Devices and Technology of Nankai University, Key Laboratory of Photo-electronic Thin Film Devices and Technology of Tianjin, Key Laboratory of Opto-electronic Information Science and Technology for Ministry of Education, Tianjin 300071, China）
polymer solar cells, zinc oxide thin film, morphology, annealing
The effects of annealing rate and morphology of sol–gel derived zinc oxide （ZnO） thin films on the performance of inverted polymer solar cells （IPSCs） are investigated. ZnO films with different morphologies are prepared at different annealing rates and used as the electron transport layers in IPSCs. The undulating morphologies of ZnO films fabricated at annealing rates of 10 ℃/min and 3 ℃/min each possess a rougher surface than that of the ZnO film fabricated at a fast annealing rate of 50 ℃/min. The ZnO films are characterized by atomic force microscopy （AFM）, optical transmittance measurements, and simulation. The results indicate that the ZnO film formed at 3 ℃/min possesses a good-quality contact area with the active layer. Combined with a moderate light-scattering, the resulting device shows a 16% improvement in power conversion efficiency compared with that of the rapidly annealed ZnO film device.
11-5639/O4
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/22/11/118801