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Organic Laser Dyes: Deep‐Red Lasing and Amplified Spontaneous Emission from Nature Inspired Bay‐Annulated Indigo Derivatives (Advanced Optical Materials 2/2020)
Author(s) -
Shukla Atul,
Wallwork Nicholle R.,
Li Xin,
Sobus Jan,
Mai Van T. N.,
McGregor Sarah K. M.,
Chen Kay,
Lepage Romain J.,
Krenske Elizabeth H.,
Moore Evan G.,
Namdas Ebinazar B.,
Lo ShihChun
Publication year - 2020
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.202070006
Subject(s) - lasing threshold , materials science , amplified spontaneous emission , chromophore , optoelectronics , photoluminescence , laser , photochemistry , energy transfer , dye laser , polymer , optics , chemical physics , chemistry , composite material , wavelength , physics
Evan G. Moore, Ebinazar B. Namdas, Shih‐Chun Lo and co‐workers (article number 1901350) discover a new class of solution processable organic semiconductor laser dyes with deep‐red emission. These dyes exhibit high photoluminescence quantum yields and low amplified spontaneous emission (ASE) thresholds. Their use of a mixed host of 1,3‐bis( N ‐carbazolyl)benzene (mCP) and 2‐hydroxyphenylbenzothiazole (HBT) not only leads to efficient cascade energy transfer, but significantly enhances the photostability of the films thanks to much lower heat dissipation in the chromophores.