We report on thin films based on a new type of nematic oxadiazole containing polymer for application in blue light emitting diodes. In particular, our focus will be on the thickness and temperature dependence of the optical characteristics. A simple optical characterization setup, based on an GaN UV-LED as excitation source and a fiber-coupled spectrometer, has been used to determine the photoluminescence spectrum and peak intensity in the blue wavelength range and the UV-reflection intensity. The measured values of the photoluminescence intensity increase, while those of the UV-reflection intensity decrease strongly with increasing the thickness of the polymer film. This may enable one to use the ratio of both values after appropriate calibration as a valid tool for small variations of the film thickness. We find only a moderate decrease in photoluminescence intensity with increasing the film temperature from 25 to 60 °C. © 2004 Elsevier B.V. All rights reserved.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Materials Chemistry
Acierno, D., Amendola, E., Bellone, S., Concilio, S., Ferrara, L., Iannelli, P., ... Villani, F. (2004). Synthesis and luminescent properties of a new class of nematic oxadiazole containing poly-ethers for PLED. Journal of Non-Crystalline Solids, 338-340(1 SPEC. ISS.), 278 - 282. https://doi.org/10.1016/j.jnoncrysol.2004.02.088