Presentation Information
[15a-PA3-1]Semi-Transparent Organic Photovoltaics Utilizing Triphenyl-Amine Polymers
〇Suzuna Kobayashi1, Hiroto Niwa1, Hiroto Iwasaki1, Yutaka Majima1, Seiichiro Izawa1 (1.Science Tokyo MSL)
Keywords:
organic photovoltaics,organic solar cells
Organic photovoltaics (OPVs) are promising for transparent applications like building-integrated windows. However, conventional donor polymers limit average visible transmittance (AVT). To improve AVT, we utilized amine-polymer-based hole-transporting materials (HTMs) as donors, leveraging their high mobility and UV-selective absorption in this study.
The OPV devices were fabricated using PTAA as a donor and COi8DFIC as an NFA. The device achieved a maximum power conversion efficiency (PCE) of 1.3%, confirming effective charge separation. The AVT reached 75.5% (excluding electrodes), a 28.6% improvement over conventional PTB7-Th-based devices. Similar donor functionality was observed with Y6. Furthermore, other HTMs such as Poly-TPD, Spiro-MeOTAD, and Spiro-TAD were evaluated; Spiro-TAD yielded a PCE of 0.89%. These results demonstrate that amine-polymer-based HTMs can effectively function as donors, offering a new strategy for high-transparency OPV applications.
The OPV devices were fabricated using PTAA as a donor and COi8DFIC as an NFA. The device achieved a maximum power conversion efficiency (PCE) of 1.3%, confirming effective charge separation. The AVT reached 75.5% (excluding electrodes), a 28.6% improvement over conventional PTB7-Th-based devices. Similar donor functionality was observed with Y6. Furthermore, other HTMs such as Poly-TPD, Spiro-MeOTAD, and Spiro-TAD were evaluated; Spiro-TAD yielded a PCE of 0.89%. These results demonstrate that amine-polymer-based HTMs can effectively function as donors, offering a new strategy for high-transparency OPV applications.