Bifunctional Heterocyclic Spiro Derivatives for Organic Optoelectronic Devices

Chin Yiu Chan, Yi Chun Wong, Mei Yee Chan*, Sin Hang Cheung, Shu Kong So, Vivian Wing Wah Yam*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

31 Citations (Scopus)


A series of heterocyclic spiro derivatives has been successfully synthesized and characterized by photophysical and electrochemical studies. Taking advantage of their excellent hole-transporting properties, highly efficient small-molecular organic photovoltaic devices based on these heterocyclic compounds as donors with very low dopant concentrations have been prepared; particularly, a high open-circuit voltage of up to 1.10 V and a power conversion efficiency of up to 5.12% have been realized. In addition, most of these heterocyclic spiro derivatives are found to be highly emissive in solutions with photoluminescence quantum yields of up to 0.91, and high-performance deep-blue-emitting organic light-emitting diodes (OLEDs) have been achieved. Such devices exhibit a stable deep blue emission with CIE coordinates of (0.16, 0.04) and high external quantum efficiencies of up to 4.7%, which is one of the best values among the reported OLEDs with CIEy < 0.08.

Original languageEnglish
Pages (from-to)24782-24792
Number of pages11
JournalACS Applied Materials and Interfaces
Issue number37
Publication statusPublished - 21 Sept 2016

Scopus Subject Areas

  • Materials Science(all)

User-Defined Keywords

  • bifunctional materials
  • heterocyclic
  • organic light-emitting diodes
  • organic photovoltaics
  • spiro


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