Low-threshold blue amplified spontaneous emission in a statistical copolymer and its blend
SCIE
SCOPUS
- Title
- Low-threshold blue amplified spontaneous emission in a statistical copolymer and its blend
- Authors
- Lee, TW; Park, OO; Choi, DH; Cho, HN; Kim, YC
- Date Issued
- 2002-07-15
- Publisher
- AMER INST PHYSICS
- Abstract
- We report low-threshold, blue amplified spontaneous emission (ASE) in a statistical copolymer, poly(9,9-dihexylfluorene-2,7-divinylene-m-phenylenevinylene-stat-p-phenylenevinylene) (CPDHFPV) and its blend with poly(9-vinylcarbazole) (PVK). PVK and CPDHFPV acted as the donor and the acceptor of the Forster-type excitation energy transfer, respectively. A single component waveguide made of CPDHFPV gave the threshold energy of 160 nJ/cm(2)/pulse. Moreover, that of the PVK/CPDHFPV (95/5 by wt.) blend device was as low as 20 nJ/cm(2)/pulse. From the relationship between the ASE intensity and the film thickness, we suggest that the optimum thickness for the photopumped ASE should be the transverse electric-mode cutoff thickness. (C) 2002 American Institute of Physics.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/9420
- DOI
- 10.1063/1.1491297
- ISSN
- 0003-6951
- Article Type
- Article
- Citation
- APPLIED PHYSICS LETTERS, vol. 81, no. 3, page. 424 - 426, 2002-07-15
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