Coherent random lasing in the deep blue from self-assembled organic nanofibers

2006 ◽  
Vol 99 (3) ◽  
pp. 034305 ◽  
Author(s):  
A. Andreev ◽  
F. Quochi ◽  
F. Cordella ◽  
A. Mura ◽  
G. Bongiovanni ◽  
...  
Keyword(s):  
Random Lasing ◽  
Deep Blue ◽  
Self Assembled

From Bloch to random lasing in ZnO self-assembled nanostructures

2013 ◽  
Vol 1 (44) ◽  
pp. 7357 ◽  
Author(s):  
Pedro David García ◽  
Cefe López
Keyword(s):  
Random Lasing ◽  
Self Assembled

Random Lasing in Self-Assembled Dye-Doped Latex Nanoparticles: Packing Density Effects

2013 ◽  
Vol 23 (31) ◽  
pp. 3916-3924 ◽  
Author(s):  
Luis Cerdán ◽  
Angel Costela ◽  
Eduardo Enciso ◽  
Inmaculada García-Moreno
Keyword(s):  
Packing Density ◽  
Random Lasing ◽  
Density Effects ◽  
Self Assembled

scholarly journals Crystalization-enhanced Stability by Effectively Suppressing Pho-tooxidation Defect for Lasing Emission and Electroluminescent Device

2021 ◽  
Author(s):  
He Zhang ◽  
Dongqing Lin ◽  
Huifang Liu ◽  
Wei Liu ◽  
Yang-Cheng Wang ◽  
...  
Keyword(s):  
Blue Emission ◽  
Optoelectronic Device ◽  
Wide Bandgap ◽  
The Self ◽  
Color Purity ◽  
Deep Blue ◽  
Self Assembled ◽  
Bandgap Semiconductors ◽  
On The Road ◽  
Enhanced Stability

Abstract Effectively protection against photooxidation of wide bandgap semiconductors remains a challenge that become the bottleneck on the road to commercialization. Herein, we demonstrated the crystallization effects of fluorene-based blue emitters on long-wavelength green band (g-band) defect with the well-defined organic micro/nanocrystals obtained via the self-assembly of surfactant-assisted reprecipitation methods. For the key molecule model 2,2'-bi(9,9-dipropyl)fluorene (DDC3F), the self-assembled nanorods film ex-hibits an ultrastable spectral stability without the presence of g-band emission (530 nm), and even main-tains the deep-blue emission under ultraviolet exposure (~ 3 h). In contrast, the spin-coated amorphous film shows a poor color purity with a green-index of ~ 4. Our results offer a robust evidence on the princi-ple in aggregate-enhanced stability, which is severely ignored by the general application of amorphously glassy molecules in OLED devices. In addition, the single nanorod as Fabry-Pérot (FP) optical resonator exhibits size-dependent dual wavelength lasing at 392 nm (threshold: 102 mW/cm2) and 412 nm (threshold: 216 mW/cm2), and generates the deep-blue electroluminescence in solution-processing OLED devices. The supramolecular self-assembled micro/nanocrystals strategy provides a potential platform to maintain ultrastable color purity in wide-bandgap optoelectronic device.

scholarly journals Random lasing actions in self-assembled perovskite nanoparticles

2016 ◽  
Vol 55 (5) ◽  
pp. 057102 ◽  
Author(s):  
Shuai Liu ◽  
Wenzhao Sun ◽  
Jiankai Li ◽  
Zhiyuan Gu ◽  
Kaiyang Wang ◽  
...  
Keyword(s):  
Random Lasing ◽  
Self Assembled ◽  
Perovskite Nanoparticles
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