Low-threshold blue amplified spontaneous emission in a statistical copolymer and its blend

Tae Woo Lee; O. Ok Park; Dong Hoon Choi; Hyun Nam Cho; Young Chul Kim

doi:10.1063/1.1491297

Low-threshold blue amplified spontaneous emission in a statistical copolymer and its blend

Tae Woo Lee, O. Ok Park, Dong Hoon Choi, Hyun Nam Cho, Young Chul Kim

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

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 Förster-type excitation energy transfer, respectively. A single component waveguide made of CPDHFPV gave the threshold energy of 160nJ/cm²/pulse. Moreover, that of the PVK/CPDHFPV (95/5 by wt.) blend device was as low as 20nJ/cm²/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.

Original language	English
Pages (from-to)	424-426
Number of pages	3
Journal	Applied Physics Letters
Volume	81
Issue number	3
DOIs	https://doi.org/10.1063/1.1491297
Publication status	Published - 2002 Jul 15
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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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 F{\"o}rster-type excitation energy transfer, respectively. A single component waveguide made of CPDHFPV gave the threshold energy of 160nJ/cm2/pulse. Moreover, that of the PVK/CPDHFPV (95/5 by wt.) blend device was as low as 20nJ/cm2/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.",

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T1 - Low-threshold blue amplified spontaneous emission in a statistical copolymer and its blend

AU - Lee, Tae Woo

AU - Park, O. Ok

AU - Choi, Dong Hoon

AU - Cho, Hyun Nam

AU - Kim, Young Chul

PY - 2002/7/15

Y1 - 2002/7/15

N2 - 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 Förster-type excitation energy transfer, respectively. A single component waveguide made of CPDHFPV gave the threshold energy of 160nJ/cm2/pulse. Moreover, that of the PVK/CPDHFPV (95/5 by wt.) blend device was as low as 20nJ/cm2/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.

AB - 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 Förster-type excitation energy transfer, respectively. A single component waveguide made of CPDHFPV gave the threshold energy of 160nJ/cm2/pulse. Moreover, that of the PVK/CPDHFPV (95/5 by wt.) blend device was as low as 20nJ/cm2/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.

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Low-threshold blue amplified spontaneous emission in a statistical copolymer and its blend

Abstract

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