Indacenodithiophene-based N-type conjugated polymers provide highly thermally stable ternary organic photovoltaics displaying a performance of 17.5%
| Autor: | Ru-Jong Jeng, Mohamed Hammad Elsayed, Yi-Peng Wang, Bing-Huang Jiang, Po-Yen Chang, Ho-Hsiu Chou, Chih-Ping Chen, Yu-Cheng Chiu |
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| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Materials science Organic solar cell Renewable Energy Sustainability and the Environment Annealing (metallurgy) 02 engineering and technology General Chemistry Polymer Conjugated system 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Dissociation (chemistry) 0104 chemical sciences chemistry Chemical engineering Phase (matter) General Materials Science Thermal stability 0210 nano-technology Ternary operation |
| Zdroj: | Journal of Materials Chemistry A. 9:9780-9790 |
| ISSN: | 2050-7496 2050-7488 |
| DOI: | 10.1039/d1ta00796c |
| Popis: | In this paper we describe three indacenodithiophene-based conjugated polymers (PITIC-Ph, PITIC-Th, and PITIC-ThF) that we tested as third components for PM6:Y6-based ternary organic photovoltaics (OPVs) to provide high-power conversion efficiencies (PCEs) and long-term thermal stabilities. Among them, the incorporation of PITIC-Ph enhanced the charge dissociation and prohibited the bimolecular (trap-assisted) recombination of the PM6:Y6 blend. Compared with the pre-optimized OPV device, the PCEs of the PITIC-Ph-doped devices improved from 15.0 ± 0.37 to 17.0 ± 0.35% under AM 1.5 G (100 mW cm−2) irradiation. More critically, studies of the thermal stability revealed another phenomenon: embedding PITIC-Ph decreased the degree of thermally driven phase segregation of the PM6:Y6 blend film. The respective OPVs exhibited outstanding thermal stability under stress at 150 °C within a glove box, with the PCE of the PITIC-Ph-doped device remaining high (at 16.4%) after annealing for 560 h. |
| Databáze: | OpenAIRE |
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