Controlling Surface Enrichment in Polymeric Hole Extraction Layers to Achieve High-Efficiency Organic Photovoltaic Cells

被引：30
作者：
Kim, Dong-Hun [1 ]
Lim, Kyung-Geun [1 ]
Park, Jong Hyeok [2 ,3 ]
Lee, Tae-Woo [1 ]
机构：
[1] Pohang Univ Sci & Technol POSTECH, Dept Mat Sci & Engn, Pohang 790784, Gyeongbuk, South Korea
[2] Sungkyunkwan Univ, SKKU Adv Inst Nanotechnol SAINT, Suwon 440746, South Korea
[3] Sungkyunkwan Univ, Sch Chem Engn, Suwon 440746, South Korea
来源：
CHEMSUSCHEM | 2012年 / 5卷 / 10期
基金：
新加坡国家研究基金会;
关键词：
conducting polymers; hole extraction; interfaces; solar cells; surfaces; LIGHT-EMITTING-DIODES; INTERNAL QUANTUM EFFICIENCY; SOLAR-CELLS; WORK FUNCTION; FULLERENE; INJECTION; PERFORMANCE; THICKNESS; BLENDS; PSS;
D O I：
10.1002/cssc.201200202
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Hole extraction in organic photovoltaic cells (OPVs) can be modulated by a surface-enriched layer formed on top of the conducting polymer-based hole extraction layer (HEL). This tunes the surface work function of the HEL to better align with the ionization potential of the polymeric photoactive layer. Results show noticeable improvement in device power conversion efficiencies (PCEs) in OPVs. We achieved a 6.1?% PCE from the OPV by optimizing the surface-enriched layer.
引用
收藏
页码：2053 / 2057
页数：5
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