Indication of current-injection lasing from an organic semiconductor

By Atula S. D. Sandanayaka, T. Matsushima, F. Bencheikh, Shinobu Terakawa, William J. Potscavage, Chuanjiang Qin, T. Fujihara, K. Goushi, J. Ribierre, Chihaya Adachi. Applied Physics Express, 2019

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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.

Subfields: Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/a6e8266bb5e67509f7653f212d45e603488d127f