Tyagi, Priyanka and Kumar, Arunandan and Giri, Lalat Indu and Tuli, Suneet and Srivastava, Ritu (2015) Conductive cooling in white organic light emitting diode for enhanced efficiency and life time. Applied Physics Letters, 106 (1). 013301-1-013301-6. ISSN 0003-6951

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Abstract

We demonstrate white organic light emitting diodes with enhanced efficiency (26.8 lm/W) and life time (similar to 11 000 h) by improved heat dissipation through encapsulation composed of a metal (Cu, Mo, and Al) and mica sheet joined using thermally conducting epoxy. Finite element simulation is used to find effectiveness of these encapsulations for heat transfer. Device temperature is reduced by about 50% with the encapsulation. This, consequently, has improved efficiency and life time by about 30% and 60%, respectively, with respect to glass encapsulation. Conductive cooling of device is suggested as the possible cause for this enhancement.

Item Type:	Article
Subjects:	Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	20 Sep 2016 07:07
Last Modified:	20 Sep 2016 07:07
URI:	http://npl.csircentral.net/id/eprint/1742

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