Au nanorods-incorporated plasmonic-enhanced inverted organic solar cells

doi:10.1088/1674-1056/24/11/115202

Abstract The effect of Au nanorods (NRs) on optical-to-electric conversion efficiency is investigated in inverted polymer solar cells, in which Au NRs are sandwiched between two layers of ZnO. Accompanied by the optimization of thickness of ZnO covered on Au NRs, a high-power conversion efficiency of 3.60% and an enhanced short-circuit current density (J_SC) of 10.87 mA/cm² are achieved in the poly(3-hexylthiophene): [6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PC₆₀BM)-based inverted cell and the power conversion efficiency (PCE) is enhanced by 19.6% compared with the control device. The detailed analyses of the light absorption characteristics, the simulated scattering induced by Au NRs, and the electromagnetic field around Au NRs show that the absorption improvement in the photoactive layer due to the light scattering from the longitudinal axis and the near-field increase around Au NRs induced by localized surface plasmon resonance plays a key role in enhancing the performances.

Keywords: organic solar cells nanorods LSPR effect scattering

Received: 03 April 2015
Revised: 01 June 2015
Accepted manuscript online:

PACS:	52.35.Hr	(Electromagnetic waves (e.g., electron-cyclotron, Whistler, Bernstein, upper hybrid, lower hybrid))
	52.25.Tx	(Emission, absorption, and scattering of particles)
	68.37.Lp	(Transmission electron microscopy (TEM))
	68.37.Ps	(Atomic force microscopy (AFM))

Fund: Project supported by the Ministry of Science and Technology, China (Grant No. 2012CB933301), the National Natural Science Foundation of China (Grant Nos. 61274065, 51173081, 61136003, BZ2010043, 51372119, and 51172110), and the Priority Academic Program Development of Jiangsu Provincial Higher Education Institutions and Synergetic Innovation Center for Organic Electronics and Information Displays, China.

Corresponding Authors: Chen Shu-Fen, Huang Wei
E-mail: iamsfchen@njupt.edu.cn;iamdirector@fudan.edu.cn

Cite this article:

Peng Ling (彭玲), Mei Yang (梅杨), Chen Shu-Fen (陈淑芬), Zhang Yu-Pei (张玉佩), Hao Jing-Yu (郝敬昱), Deng Ling-Ling (邓玲玲), Huang Wei (黄维) Au nanorods-incorporated plasmonic-enhanced inverted organic solar cells 2015 Chin. Phys. B 24 115202

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Au nanorods-incorporated plasmonic-enhanced inverted organic solar cells

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