Controlling charge transport in blue organic light-emitting devices by chemical functionalization of host materials
Generation of white light from OLEDs for general lighting applications requires a highly efficient blue component. However, a stable and power efficient blue OLED component with simple device architecture remains a significant challenge partly due to lack of appropriate host materials. Here we report the photophysical and device properties of ambipolar host phosphine oxide based materials. In this work, we studied the effect of the structural modification made to phosphine oxide-based hosts on the charge balance. We observed significant changes in charge transport within the host occurred upon small modifications to their chemical structure. As a result, an alteration of the chemical design of these materials allows for the control of charge balance of the OLED.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1025666
- Report Number(s):
- PNNL-SA-74814; 830403000; TRN: US201120%%677
- Journal Information:
- Journal of Photonics for Energy, 1:Art. No. 011007, Vol. 1
- Country of Publication:
- United States
- Language:
- English
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