Improved Photovoltaic Properties of Polymer Solar Cells with a Phenyl Compound as an Additive

被引:1
作者
Jeong, Seonju [1 ]
Woo, Sung-Ho [1 ]
Lyu, Hong-Kun [1 ]
Kim, Cham [1 ]
Kim, Wook Hyun [1 ]
Han, Yoon Soo [2 ]
机构
[1] Daegu Gyeongbuk Inst Sci & Technol, Green Energy Res Div, Taegu 711873, South Korea
[2] Catholic Univ Daegu, Dept Adv Energy Mat Sci & Engn, Gyongsan 712702, Gyeongbuk, South Korea
关键词
Phenyl Compound; Polymer Solar Cells; P3HT; PCBM; Additives; OPEN-CIRCUIT VOLTAGE; PERFORMANCE; EFFICIENCY; MORPHOLOGY;
D O I
10.1166/jnn.2014.8436
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A phenyl compound with electron withdrawing substituents, 3-fluoro-4-cyanophenol (FCP), was used as an additive in polymer solar cells with a P3HT [poly(3-hexyl thiophene)]:PCBM [[6,6]-phenyl-C61-butyric acid methyl ester] blend film. Under simulated solar illumination of AM 1.5 (100 mW/cm(2)), the devices fabricated using a P3HT: PCBM (1:0.9 w:w) layer blended with 5 wt% of FCP achieved an enhanced power conversion efficiency (PCE) of 4.8% due to the improved short circuit current and fill factor, as compared to reference cells with PCE = 4.1%. UV-visible absorption spectra, X-ray measurements and carrier mobility studies revealed that FCP facilitated the ordering of the P3HT chains, resulting in higher absorbance, larger crystal size, closer packing and enhanced hole mobility.
引用
收藏
页码:5988 / 5992
页数:5
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