Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
DOI: https://doi.org/10.29363/nanoge.hopv.2022.110
Publication date: 20th April 2022
Fine tuning of blend morphology is a key factor that limits the performance of the bulk-heterojunction organic photovoltaics (BHJ-OPVs). In the present work, the morphological control of the binary (PM6:Y7) blend is conducted through 1-chloronaphthalene (CN) solvent additive and thermal annealing (TA) treatment with respect to their influence on the photovoltaic performance. Moreover, a distinct study is accomplished on the optical and electronic properties of the treated and the pristine binary devices by external quantum efficiency measurements and impedance spectroscopy. We found that the champion performance of the binary devices was exhibited through the dual effect of 2% CN solvent additive along with the TA treatments.
Enas Moustafa acknowledges the financial support from the Agency for Management of University and Research Grants (AGAUR) for receiving the fund with grant number 2019 FI_B01102. This work was further supporte by the Spanish Ministerio de Ciencia, Innovación y Universidades (MICINN/FEDER) RTI2018-094040-B-I00, by AGAUR ref. 2017-SGR-1527. The authors also acknowledge Dr. Maria Mendez for the photoluminescence measurement held in the Institute of Chemical Research of Catalonia, Barcelona Institute of Science and Technology (ICIQ-BIST).
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