Conductive Water/Alcohol-Soluble Neutral Fullerene Derivative as an Interfacial Layer for Inverted Polymer Solar Cells with High Efficiency

doi:10.1021/am503510z

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	Conductive Water/Alcohol-Soluble Neutral Fullerene Derivative as an Interfacial Layer for Inverted Polymer Solar Cells with High Efficiency
	Yi, Chao 1; Yue, Kan 1; Zhang, Wen-Bin 1; Lu, Xiaocun 1; Hou, Jianhui 2; Li, Yongfang 2; Huang, Lin 3; Newkome, George R.1; Cheng, Stephen Z. D.1; Gong, Xiong 1
刊名	ACS APPLIED MATERIALS & INTERFACES
	2014-08-27
卷号	6 期号:16 页码:14189-14195
关键词	Inverted Polymer Solar Cells Electron Extraction Layer Neutral Surface Electronic Conductivity Power Conversion Efficiency
ISSN号	1944-8244
DOI	10.1021/am503510z
英文摘要	Dipole induced vacuum level shift has been demonstrated to be responsible for the enhanced efficiency in polymer solar cells (PSCs).The modified energy level alignment could reduce the energy barrier and facilitate charge transport, thereby increasing the efficiency of PSCs. Herein, we report a new mechanism toward enhanced efficiency by using a nondipolar water/alcohol-soluble neutral fullerene derivative to reengineer the surface of the zinc oxide (ZnO) electron extraction layer (EEL) in inverted PSCs. Because of the neutral property (ion-free) of the fullerene derivatives, no dipole moment was introduced at the EEL/active layer interface. A negligible change in open-circuit voltage was observed from inverted PSCs with the neutral fullerene derivative layer. The neutral fullerene derivative layer greatly increased the surface electronic conductivity of the ZnO EEL, suppressed surface charge recombination, and increased the short-circuit current density and fill factor. An overall power conversion efficiency increase of more than 30% from inverted PSCs was obtained. These results demonstrate that the surface electronic conductivity of the EEL plays an important role in high performance inverted PSCs.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000341122000105
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/52305]
专题	中国科学院化学研究所
通讯作者	Gong, Xiong
作者单位	1.Univ Akron, Coll Polymer Sci & Polymer Engn, Akron, OH 44325 USA 2.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China 3.Bruker Corp, Nano Surfaces Div, Santa Barbara, CA 93117 USA
推荐引用方式 GB/T 7714	Yi, Chao,Yue, Kan,Zhang, Wen-Bin,et al. Conductive Water/Alcohol-Soluble Neutral Fullerene Derivative as an Interfacial Layer for Inverted Polymer Solar Cells with High Efficiency[J]. ACS APPLIED MATERIALS & INTERFACES,2014,6(16):14189-14195.
APA	Yi, Chao.,Yue, Kan.,Zhang, Wen-Bin.,Lu, Xiaocun.,Hou, Jianhui.,...&Gong, Xiong.(2014).Conductive Water/Alcohol-Soluble Neutral Fullerene Derivative as an Interfacial Layer for Inverted Polymer Solar Cells with High Efficiency.ACS APPLIED MATERIALS & INTERFACES,6(16),14189-14195.
MLA	Yi, Chao,et al."Conductive Water/Alcohol-Soluble Neutral Fullerene Derivative as an Interfacial Layer for Inverted Polymer Solar Cells with High Efficiency".ACS APPLIED MATERIALS & INTERFACES 6.16(2014):14189-14195.