Indication of current-injection lasing from an organic semiconductor

Atula S.D. Sandanayaka, Toshinori Matsushima, Fatima Bencheikh, Shinobu Terakawa, William J. Potscavage, Chuanjiang Qin, Takashi Fujihara, Kenichi Goushi, Jean Charles Ribierre, Chihaya Adachi

Research output: Contribution to journalArticlepeer-review

203 Citations (Scopus)


In this study, we investigate the lasing properties of 4,4′-bis[(N-carbazole)styryl]biphenyl thin films under electrical pumping. The electroluminescent devices incorporate a mixed-order distributed feedback SiO2 grating into an organic light-emitting diode structure and emit blue lasing. The results provide an indication of lasing by direct injection of current into an organic thin film through selection of a high-gain organic semiconductor showing clear separation of the lasing wavelength from significant triplet and polaron absorption and design of a proper feedback structure with low losses at high current densities. This study represents an important advance toward a future organic laser diode technology.

Original languageEnglish
Article number061010
JournalApplied Physics Express
Issue number6
Publication statusPublished - Jun 1 2019

All Science Journal Classification (ASJC) codes

  • General Engineering
  • General Physics and Astronomy


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