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

被引：32

作者：

Lee, TW

Park, OO

Choi, DH

Cho, HN

Kim, YC

机构：

[1] Korea Inst Sci & Technol, Polymer Mat Lab, Seoul 130650, South Korea

[2] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Taejon 305701, South Korea

[3] Kyung Hee Univ, Coll Environm & Appl Chem, Inst Nat Sci, Mat Ctr Informat Display, Yongin 449701, Kyungki, South Korea

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 03期

关键词：

D O I：

10.1063/1.1491297

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

页码：424 / 426

页数：3

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