標題: Large-area blade-coated organic solar cells processed from halogen-free solvent
作者: Chen, Szu-Han
Liao, Chung-Hung
Chang, Chih-Yu
Huang, Kuan-Min
Chen, Jen-Yueh
Chen, Chao-Hsuan
Meng, Hsin-Fei
Zan, Hsiao-Wen
Horng, Sheng-Fu
Lin, Yen-Chung
Yeh, Min-Hsin
電子物理學系
物理研究所
光電工程學系
光電工程研究所
Department of Electrophysics
Institute of Physics
Department of Photonics
Institute of EO Enginerring
關鍵字: Organic solar cells;Blade-coating;Halogen-free solvent;Large area;Air-processing
公開日期: 1-Dec-2019
摘要: High performance organic solar cells (OSCs) are generally prepared by halogenated solvents, which are detrimental to the environment and human health. The replacement of hazardous halogenated solvents is a priority in the commercialization of solution-processed OSCs. In this study, poly[4,8-bis(5-(2-ethylhexyl)thiophen-2-yl) benzo [1,2-b;4,5-b'] dithiophene-2,6-diyl-alt-(4- (2-ethylhexyl)-3-fluorothieno [3,4-b] thiophene-)-2-carboxylate-2-6-diyl)] (PBDTTT-EFT):[6,6]-phenyl C-71 -butyric acid methyl ester (PC71BM)-based device processed with binary halogen-free solvents (toluene and N-methyl-2-pyrrolidone) is fabricated by blade-coating method. Through the combination of morphological manipulation of active layer and interfacial engineering, the resulting OSCs deliver a promising power conversion efficiency (PCE) up to 11.09%. Importantly, large-area (216 cm(2)) blade-coated bulk-heterojunction OSCs is also demonstrated, and the resulting devices deliver a high PCE up to 5.03%, which is comparable to those of the devices processed with halogenated solvents (PCE = 5.20%). Additionally, the devices processed with halogen-free solvents also exhibit superior stability, maintaining 88% of its initial efficiency after 3960 h of continuous operation. More encouragingly, halogen-free solvents-based manufacturing process can also be performed under ambient conditions, and a moderate PCE of 3.67% is attained for large-area (216 cm(2)) OSCs. To the best of our knowledge, 3.67% represents the highest efficiency ever reported for air-processed large-area OSCs. This work paves the way towards the realization of environmentally-friendly large-area OSCs with high performance and long-term stability.
URI: http://dx.doi.org/10.1016/j.orgel.2019.105376
http://hdl.handle.net/11536/153730
ISSN: 1566-1199
DOI: 10.1016/j.orgel.2019.105376
期刊: ORGANIC ELECTRONICS
Volume: 75
起始頁: 0
結束頁: 0
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