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  Frequency up-conversion as a temperature probe of organic opto- electronic devices

Lupton, J. M. (2002). Frequency up-conversion as a temperature probe of organic opto- electronic devices. Applied Physics Letters, 80(2), 186-188.

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 Creators:
Lupton, J. M.1, Author              
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1MPI for Polymer Research, Max Planck Society, ou_1309545              

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 Abstract: Frequency up-conversion is demonstrated in a polyfluorene-based conjugated polymer. Up-converted emission is observed upon excitation to the red of the 0-0 luminescence band. The emission intensity depends strongly on temperature and provides an accurate probe of the operating temperature of organic light-emitting diodes. Temperature rises of up to 30 K are observed at standard operating current densities of 225 mA/cm(2). Due to the low thermal conductivity and heat capacity of the polymer film, the temperature of the film is found to rise slowly on a time-scale of seconds. Upon termination of the current, the temperature decreases again on a time-scale of minutes. (C) 2002 American Institute of Physics.

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Language(s): eng - English
 Dates: 2002-01-14
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Type: No review
 Identifiers: eDoc: 28566
ISI: 000173153800008
Other: P-02-8
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Title: Applied Physics Letters
  Alternative Title : Appl. Phys. Lett.
Source Genre: Journal
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Pages: - Volume / Issue: 80 (2) Sequence Number: - Start / End Page: 186 - 188 Identifier: ISSN: 0003-6951