Toward Long-Term Stable and Efficient Large-Area Organic Solar Cells
| Autor: | Cheng Yu Wu, Man Chun Lin, Chih Yu Chang, Chung Hung Liao, Chien-Lung Wang, Kuan Chu Lin, Yu Chiang Chao, Hsin-Fei Meng, Ying Qian Wong, Pei Ting Tsai, Sheng-fu Horng, Yi Fan Huang, Hsiao-Wen Zan |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Organic solar cell Polymers Annealing (metallurgy) General Chemical Engineering Energy conversion efficiency Temperature 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Active layer Butyric acid chemistry.chemical_compound Electric Power Supplies General Energy Chemical engineering chemistry Solar Energy Environmental Chemistry Organic chemistry General Materials Science Organic Chemicals 0210 nano-technology |
| Zdroj: | ChemSusChem. 10:2778-2787 |
| ISSN: | 1864-5631 |
| DOI: | 10.1002/cssc.201700601 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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