Au nanorods-incorporated plasmonic-enhanced inverted organic solar cells
Peng Ling (彭玲)a b, Mei Yang (梅杨)a, Chen Shu-Fen (陈淑芬)a, Zhang Yu-Pei (张玉佩)a, Hao Jing-Yu (郝敬昱)a, Deng Ling-Ling (邓玲玲)a b, Huang Wei (黄维)a c
a Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials, Nanjing University of Posts & Telecommunications Synergistic Innovation Center for Advanced Materials, Nanjing 210023, China; b School of Opto-Electronic Engineering, Nanjing University of Posts & Telecommunications, Nanjing 210023, China; c Key Laboratory of Flexible Electronics & Institute of Advanced Materials, National Synergistic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
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 (JSC) 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.
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.
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.