Abstract
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 language | English |
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Pages (from-to) | 24782-24792 |
Number of pages | 11 |
Journal | ACS Applied Materials and Interfaces |
Volume | 8 |
Issue number | 37 |
DOIs | |
Publication status | Published - 21 Sept 2016 |
Scopus Subject Areas
- Materials Science(all)
User-Defined Keywords
- bifunctional materials
- heterocyclic
- organic light-emitting diodes
- organic photovoltaics
- spiro