Synthesis and properties of D-π-A-π-D type thiadiazole [3,4-c] pyridine-based small-molecule donors for organic photovoltaics
Wan Li a, Praweena Wongkaew a, Supawadee Namuangruk b, Taweesak Sudyoadsuk a, Vinich Promarak a
a Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong 21210, Thailand
b Senior Researcher at Nanoscale Simulation Laboratory National Nanotechnology Center (NANOTEC), National Science and Development Agency, KlongLuang, Pathum Thani 12120, Thailand
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV19)
Roma, Italy, 2019 May 12th - 15th
Organizers: Prashant Kamat, Filippo De Angelis and Aldo Di Carlo
Poster, Wan Li, 204
Publication date: 11th February 2019

Two D-π-A-π-D type thiadiazole [3,4-c] pyridine-based small molecules were designed and synthesized for solution-processed organic photovoltaics (OPVs), namely, TP1 and TP2. The molecules were confirmed by mass spectrometer, 1H and 13C NMR. The optical and electrochemical studies of TP1 and TP2 reveal the energy band gaps, HOMO and LUMO energy levels were 1.67, 1.69 eV, -5.07, -5.22 eV and -3.40, -3.53 eV, respectively. Both molecules show intense absorption from 300 to 700 nm wavelength region covering the solar spectrum effectively. In order to investigate the photovoltaic properties of these two donors, fullerene derivatives are used as acceptors to fabricate bulk heterojunction devices. In addition, we add solvent additive in the active layer to control the morphology during solution processing, and intend to improve device performance.The device fabrication and further optimization are currently in progress for OPV applications with high efficiency and low cost.

This work has been partially supported by the NANOTEC, NSTDA, Ministry of Science and Technology, Thailand.

© Fundació Scito
We use our own and third party cookies for analysing and measuring usage of our website to improve our services. If you continue browsing, we consider accepting its use. You can check our Cookies Policy in which you will also find how to configure your web browser for the use of cookies. More info