Optimization of Difluorophenazine-Based Polymers via Substituent Modifications for Solar Energy Applications.
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| Title: | Optimization of Difluorophenazine-Based Polymers via Substituent Modifications for Solar Energy Applications. |
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| Authors: | Puspitasari1 (AUTHOR), Kim, Jaehyeong2 (AUTHOR), Agneeswari, Rajalingam1,3 (AUTHOR), Lee, Jae-Hoon1,3,4 (AUTHOR), Song, Suhee2,5 (AUTHOR), Lee, Won-Ki1,3,4 (AUTHOR), Yang, Wang Yong2,5 (AUTHOR), Kim, Jin Young2,3 (AUTHOR), Jin, Youngeup1,3,4 (AUTHOR) |
| Source: | Materials (1996-1944). Aug2026, Vol. 19 Issue 15, p3349. 13p. |
| Subjects: | Solar cell efficiency, Conjugated polymers, Functional groups, Copolymers, Solar energy, Solar panels, Photoelectricity, Fluoropolymers |
| Abstract: | A series of donor–acceptor π-conjugated polymers based on Difluorophenazine acceptor and benzodithiophene donor units with different substituents, hydrogen (H), chlorine (Cl), fluorine (F), and sulfur (S), was designed and synthesized to investigate how donor-side substituent modification influences optoelectronic properties. The substituent variation systematically modulated the optical band gaps (1.72–1.82 eV) and HOMO energy levels (−5.42 to −5.58 eV). When applied in bulk heterojunction solar cells with the Y6 acceptor, these polymers delivered power conversion efficiencies ranging from 3.85% to 7.79%. The fluorinated polymer P(BDTTF-TffPzT) exhibited the best performance, with Jsc = 19.65 mA cm−2, Voc = 0.825 V, and FF = 0.481. These findings establish that donor-side substituent engineering is an effective molecular design strategy for tuning optoelectronic properties and device performance in phenazine-based polymer systems. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | A series of donor–acceptor π-conjugated polymers based on Difluorophenazine acceptor and benzodithiophene donor units with different substituents, hydrogen (H), chlorine (Cl), fluorine (F), and sulfur (S), was designed and synthesized to investigate how donor-side substituent modification influences optoelectronic properties. The substituent variation systematically modulated the optical band gaps (1.72–1.82 eV) and HOMO energy levels (−5.42 to −5.58 eV). When applied in bulk heterojunction solar cells with the Y6 acceptor, these polymers delivered power conversion efficiencies ranging from 3.85% to 7.79%. The fluorinated polymer P(BDTTF-TffPzT) exhibited the best performance, with Jsc = 19.65 mA cm−2, Voc = 0.825 V, and FF = 0.481. These findings establish that donor-side substituent engineering is an effective molecular design strategy for tuning optoelectronic properties and device performance in phenazine-based polymer systems. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 19961944 |
| DOI: | 10.3390/ma19153349 |
