A1 Refereed original research article in a scientific journal

Electro-thermal effects in large area White-Organic Light Emitting Diodes




AuthorsKumar M, Gomes J, Pinto A, Pereira L

PublisherSPIE-INT SOC OPTICAL ENGINEERING, PO BOX 10, BELLINGHAM, WA 98227-0010 USA

Publication year2017

JournalProceedings of SPIE : the International Society for Optical Engineering

Journal name in sourceTHIRD INTERNATIONAL CONFERENCE ON APPLICATIONS OF OPTICS AND PHOTONICS

Journal acronymPROC SPIE

Article numberUNSP 1045335

Volume10453

Number of pages7

ISSN0277-786X

DOIhttps://doi.org/10.1117/12.2276382


Abstract
OLEDs for lighting became of high relevance, although challenges in the uniformity and thermal effects. In this work, White-OLEDs with 16 cm(2) 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 degrees C in the center decreasing to 35 degrees 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 m Omega/ degrees C and -10 mV/ degrees C respectively.



Last updated on 2024-26-11 at 20:53