Sub-400 nm ultra-violet luminescence of (4'-methoxy)-9-phenylcarbazole

K. F. Li, L. Luo, Louis M L LEUNG, Kok Wai CHEAH

Research output: Chapter in book/report/conference proceedingConference proceedingpeer-review


Intense ultra-violet photoluminescence at 380nm (3.26eV) was observed from a small organic molecule, (4'-methoxy)-9-phenylcarbazole (MeOKPA) at room temperature. The intensity is at least three times of that of Alq3, which is most widely used for organic LED application. Excitation spectrum and low temperature photoluminescence (PL) results show that the shortest emission is at 360nm (3.44eV). The small stoke shift of 180meV from excitation to emission indicates Thai the radiative recombination of MeOKPA is extremely efficient and the compound is robust over a wide temperature range. Moreover, it also has strong upconversion efficiency. Its upconversion PL is a little different from normal PL. The result indicates that it is a strong candidate as organic laser.

Original languageEnglish
Title of host publicationCLEO/Pacific Rim 2003 - 5th Pacific Rim Conference on Lasers and Electro-Optics
Subtitle of host publicationPhotonics Lights Innovation, from Nano-Structures and Devices to Systems and Networks, Proceedings
Number of pages1
ISBN (Electronic)0780377664
Publication statusPublished - 2003
Event5th Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim 2003 - Taipei, Taiwan, Province of China
Duration: 15 Dec 200319 Dec 2003

Publication series

NamePacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest


Conference5th Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim 2003
Country/TerritoryTaiwan, Province of China

Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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