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- Title
Nitrogen-Blowing Assisted Strategy for Fabricating Large-Area Organic Solar Modules with an Efficiency of 15.6%.
- Authors
Cheng, Yingying; Ji, Yitong; Zhang, Dongyang; Liu, Xiangda; Xia, Zezhou; Liu, Xiujun; Yang, Xueyuan; Huang, Wenchao
- Abstract
Organic solar cells (OSCs) are one of the most promising photovoltaic technologies due to their affordability and adaptability. However, upscaling is a critical issue that hinders the commercialization of OSCs. A significant challenge is the lack of cost-effective and facile techniques to modulate the morphology of the active layers. The slow solvent evaporation leads to an unfavorable phase separation, thus resulting in a low power conversion efficiency (PCE) of organic solar modules. Here, a nitrogen-blowing assisted method is developed to fabricate a large-area organic solar module (active area = 12 cm2) utilizing high-boiling-point solvents, achieving a PCE of 15.6%. The device fabricated with a high-boiling-point solvent produces a more uniform and smoother large-area film, and the assistance of nitrogen-blowing accelerates solvent evaporation, resulting in an optimized morphology with proper phase separation and finer aggregates. Moreover, the device fabricated by the nitrogen-blowing assisted method exhibits improved exciton dissociation, balanced carrier mobility, and reduced charge recombination. This work proposes a universal and cost-effective technique for the fabrication of high-efficiency organic solar modules.
- Subjects
PHASE separation; SOLAR cells; CHARGE carrier mobility
- Publication
Polymers (20734360), 2024, Vol 16, Issue 11, p1590
- ISSN
2073-4360
- Publication type
Article
- DOI
10.3390/polym16111590