Toward Long-Term Stable and Efficient Large-Area Organic Solar Cells


Tsai, Pei Ting and Wu, Cheng Yu and Lin, Kuan Chu and Liao, Chung Hung and Lin, Man Chun and Wong, Ying Qian and Meng, Hsin Fei and Chang, Chih Yu and Wang, Chien Lung and Huang, Yi Fan and Horng, Sheng Fu and Zan, Hsiao Wen and Chao, Yu Chiang (2017) Toward Long-Term Stable and Efficient Large-Area Organic Solar Cells. ChemSusChem, 10 (13). pp. 2778-2787. ISSN 1864-564X

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Here, we report that long-term stable and efficient organic solar cells (OSCs) can be obtained through the following strategies: i) combination of rapid-drying blade-coating deposition with an appropriate thermal annealing treatment to obtain an optimized morphology of the active layer; ii) insertion of interfacial layers to optimize the interfacial properties. The resulting devices based on 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 C71 butyric acid methyl ester (PC71 BM) blend as the active layer exhibits a power conversion efficiency (PCE) up to 9.57 %, which represents the highest efficiency ever reported for blade-coated OSCs. Importantly, the conventional structure devices based on poly(3-hexylthiophene) (P3HT):phenyl-C61 -butyric acid methyl ester (PCBM) blend can retain approximately 65 % of their initial PCE for almost 2 years under operating conditions, which is the best result ever reported for long-term stable OSCs under operational conditions. More encouragingly, long-term stable large-area OSCs (active area=216 cm2 ) based on P3HT:PCBM blend are also demonstrated. Our findings represent an important step toward the development of large-area OSCs with high performance and long-term stability.

Item Type: Article
Uncontrolled Keywords: Photovoltaic power systems
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1001-1841 Production of electric energy or power. Powerplants. Central stations
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Suzilawati Abu Samah
Date Deposited: 21 Oct 2020 17:36
Last Modified: 21 Oct 2020 17:36


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