High Mobility Organic Lasing Semiconductor with Crystallization-Enhanced Emission for Light-Emitting Transistors.
Angew Chem Int Ed Engl
; 60(37): 20274-20279, 2021 Sep 06.
Article
em En
| MEDLINE
| ID: mdl-34278668
ABSTRACT
The development of high mobility organic laser semiconductors with strong emission is of great scientific and technical importance, but challenging. Herein, we present a high mobility organic laser semiconductor, 2,7-diphenyl-9H-fluorene (LD-1) showing unique crystallization-enhanced emission guided by elaborately modulating its crystal growth process. The obtained one-dimensional nanowires of LD-1 show outstanding integrated properties including high absolute photoluminescence quantum yield (PLQY) approaching 80 %, high charge carrier mobility of 0.08â
cm2 V-1 s-1 , Fabry-Perot lasing characters with a low threshold of 86â
µJ cm-2 and a high-quality factor of ≈2400. Furthermore, electrically induced emission was obtained from an individual LD-1 crystal nanowire-based light-emitting transistor due to the recombination of holes and electrons simultaneously injected into the nanowire, which provides a good platform for the study of electrically pumped organic lasers and other related ultrasmall integrated electrical-driven photonic devices.
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MEDLINE
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En
Ano de publicação:
2021
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Article