Improved operational lifetime of semiconducting polymer lasers by encapsulation

S. Richardson, O. P. M. Gaudin, G. A. Turnbull, I. D. W. Samuel

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

We report polymer distributed feedback lasers with dramatically extended operational lifetimes by using a simple encapsulation process. The lasers are configured as surface emitting, two-dimensional distributed feedback lasers based on the polymer poly[2-methoxy-5-(2(')-ethylhexyloxy)-1,4-phenylene vinylene]. The microstructure is transferred to the polymer surface through solvent assisted micromolding. Once encapsulated, a 2500-fold improvement in lifetime is demonstrated under ambient conditions, compared to the unencapsulated device. A blueshift of the emission wavelength observed during operation is characterized by absorption and ellipsometry measurements and attributed to a change in effective index due to a loss of conjugation in the polymer. (c) 2007 American Institute of Physics.

Original languageEnglish
Number of pages3
JournalApplied Physics Letters
Volume91
DOIs
Publication statusPublished - 24 Dec 2007

Keywords

  • DISTRIBUTED-FEEDBACK LASERS
  • CONJUGATED POLYMERS
  • THIN-FILMS
  • MEH-PPV
  • LUMINESCENCE
  • EFFICIENCY

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