標題: Simultaneous enhancement in both large-area coatability and photovoltaic performance of inverted organic solar cells with co-solvent
作者: Hong, Yun-Ru
Chen, Pin-Kuan
Wang, Jen-Chun
Lee, Ming-Kun
Horng, Sheng-Fu
Meng, Hsin-Fei
物理研究所
Institute of Physics
關鍵字: Large area manufacturing;Organic solar cells;Co-solvent;Blade coating;Light soaking
公開日期: 1-Jan-2014
摘要: We report our observation of simultaneous enhancement in large-area coatability and photovoltaic performance for blade-coated inverted P3HT:PCBM organic solar cells with DCB:hexane co-solvent. The addition of hexane improves greatly the wettability of P3HT:PCBM blend layer on Cs2CO3 treated ITO and leads to excessively higher P3HT surface concentration due to the incongruent evaporation of hexane and DCB. A post-processing light soaking was found to further improve the photovoltaic performance for blade-coated devices prepared with co-solvent by adjusting the P3HT surface concentration ratio for more favorable carrier transport, as evidenced by the disappearance of current suppression at forward bias and significant increase in V-oc after light soaking. Since large-area manufacturing is the key to full commercialization of organic solar cells, the use of co-solvent, combined with light soaking, may be crucial for the development of inverted organic solar cells. (C) 2013 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.solmat.2013.09.002
http://hdl.handle.net/11536/23642
ISSN: 0927-0248
DOI: 10.1016/j.solmat.2013.09.002
期刊: SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume: 120
Issue: 
起始頁: 197
結束頁: 203
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