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Energy Express

  • Editor: Bernard Kippelen
  • Vol. 18, Iss. S2 — Jun. 21, 2010
  • pp: A246–A260

Analysis of the emission profile in organic light-emitting devices

B. Perucco, N. A. Reinke, D. Rezzonico, M. Moos, and B. Ruhstaller  »View Author Affiliations


Optics Express, Vol. 18, Issue S2, pp. A246-A260 (2010)
http://dx.doi.org/10.1364/OE.18.00A246


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Abstract

In this paper, numerical algorithms for extraction of opto-electronic material and device parameters in organic light-emitting devices (OLEDs) are presented and tested for their practical use. Of particular interest is the extraction of the emission profile and the source spectrum. A linear and a nonlinear fitting method are presented and applied to emission spectra from OLEDs in order to determine the shape of the emission profile and source spectrum. The motivation of the work is that despite the existence of advanced numerical models for optical and electronic simulation of OLEDs, their practical use is limited if methods for the extraction of model parameters are not well established. Two fitting methods are presented and compared to each other and validated on the basis of consistency checks. Our investigations show the impact of the algorithms on the analysis of realistic OLED structures. It is shown that both fitting methods perform reasonably well, even if the emission spectra to be analyzed are noisy. In some cases the nonlinear method performs slightly better and can achieve a perfect resolution of the emission profile. However, the linear method provides the advantage that no assumption on the mathematical shape of the emission profile has to be made.

© 2010 Optical Society of America

OCIS Codes
(000.3860) General : Mathematical methods in physics
(230.3670) Optical devices : Light-emitting diodes
(250.3680) Optoelectronics : Light-emitting polymers

ToC Category:
Light-Emitting Diodes

History
Original Manuscript: March 8, 2010
Revised Manuscript: June 3, 2010
Manuscript Accepted: June 3, 2010
Published: June 17, 2010

Citation
B. Perucco, N. A. Reinke, D. Rezzonico, M. Moos, and B. Ruhstaller, "Analysis of the emission profile in organic light-emitting devices," Opt. Express 18, A246-A260 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-S2-A246


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