Electro-thermal effects in large area white-organic light emitting diodes

M. Kumar; J. Gomes; A. Pinto; L. Pereira

doi:10.1117/12.2276382

22 August 2017 Electro-thermal effects in large area white-organic light emitting diodes

M. Kumar, J. Gomes, A. Pinto, L. Pereira

Proceedings Volume 10453, Third International Conference on Applications of Optics and Photonics; 1045335 (2017) https://doi.org/10.1117/12.2276382
Event: Third International Conference on Applications of Optics and Photonics, 2017, Faro, Portugal

Abstract

OLEDs for lighting became of high relevance, although challenges in the uniformity and thermal effects. In this work, White-OLEDs with 16 cm² emitting area was made with wide color temperature range (3200 K to 10500K) and color rendering index near 90. The CIE coordinates are stable with applied voltage. Thermal images shows 60°C in the center decreasing to 35°C at the border. This effect was study by a scalar electro-thermal model, considering the substrate, electrodes and organic layers. The thermal changing ratio in the series resistance and forward voltage obtained was of - 70 mΩ/°C and -10 mV/°C respectively.

Citation Download Citation

M. Kumar, J. Gomes, A. Pinto, and L. Pereira "Electro-thermal effects in large area white-organic light emitting diodes", Proc. SPIE 10453, Third International Conference on Applications of Optics and Photonics, 1045335 (22 August 2017); https://doi.org/10.1117/12.2276382

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