Development of Solution-Processable Organic Optoelectronic Materials

Project Details


Organic thin film transistors (OTFTs) have attracted intensive attention for potential applications in flexible displays, low-cost electronic papers. In recent years, my group has developed facile [X+1+Y] one-pot synthetic routes for DTT (dithienothiophene), BTDT (benzothienodithiophene), TTA (tetrathienoacene), and PTA (pentathienothiophene) preparation. A few new fused-thiophene-based derivatives have been developed for OTFTs. For example, we reported stable soluble BTDT-based materials with 0.65 cm2V-1s-1 mobility fabricated via a solution process. For recent p-type materials development, we have developed two new soluble small molecules which exhibit mobilities of 1.7 and 2.6 cm2V-1s-1, fabricated via a solution process. The later will be the Taiwan highest mobility small molecules via a solution process. For n-type materials development, we have developed a few new air-stable quinoidal molecules, for example, DTTQ exhibits ~0.45 cm2V-1s-1 mobility in air (AFM). Notably, these newly developed thiophene-based units are good building blocks and can be applied in OPV, 2PA, DSSC, and PSC. For example, our TTA-based small molecules and thioalkylated thiophene-based polymers have exhibited 4% and 9.4% PCE in OPV, respectively. Our newly developed TTA-based chromophores exhibited high 2PA properties, up to 3000 GM, which is the highest performance of fused-thiophene-based 2PA chromophores. Our new developed TTA-based organic dyes exhibited PCE up to 11.2%, which set a new record in Taiwan. Lastly, our new developed hole transporting layer (HTL) small molecules in Sn-based PSC (perovskite solar cell) exhibited 7.23%, which is one of the best HTLs in the world.Here in this project, we will continue preparing our newly-developed high-performance materials for their devices optimization and then published these good results. At the same time, new thiophene-based molecules will be explored for OTFT, OPV, DSSC, 2PA, and PSC. The optical/electronic performance of these new materials will be evaluated.
Effective start/end date1/08/1831/07/19

UN Sustainable Development Goals

In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This project contributes towards the following SDG(s):

  • SDG 2 - Zero Hunger
  • SDG 7 - Affordable and Clean Energy
  • SDG 17 - Partnerships for the Goals


  • Organic thin film transistors (OTFTs)
  • [X+1+Y] one-pot
  • fused-thiophene
  • DTT (dithienothiophene)
  • BTDT (benzothienodithiophene)
  • TTA (tetrathienoacene)
  • organic dye
  • DSSC
  • OPV
  • 2PA
  • hole transporting layer (HTL)
  • PSC (perovskite solar cell) OPV
  • DSS


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