Flexible White Light Emitting Diodes Based on Nitride Nanowires and Nanophosphors - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue ACS photonics Année : 2016

Flexible White Light Emitting Diodes Based on Nitride Nanowires and Nanophosphors

Résumé

We report the first demonstration of a flexible white phosphor-converted light emitting diodes (LEDs) based on p-n junction core/shell nitride nanowires. GaN nanowires containing 7 radial In 0.2 Ga 0.8 N/GaN quantum wells were grown by metal-organic chemical vapor deposition on a sapphire substrate by a catalyst-free approach. To fabricate the flexible LED, the nanowires are embedded into a phosphor-doped polymer matrix, peeled off from the growth substrate and contacted using flexible and transparent silver nanowire mesh. The electroluminescence of a flexible device presents a cool-white color with a spectral distribution covering a broad spectral range from 400 to 700 nm. Mechanical bending stress down to a curvature radius of 5 mm doesnot yieldany degradation of the LED performance. The maximal measured external quantum efficiency (EQE) of the white LED is 9.3% and the wall plug efficiency is 2.4%.
Fichier principal
Vignette du fichier
ACS photonics HAL.pdf (1.2 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01320610 , version 1 (24-05-2016)

Identifiants

Citer

Nan Guan, Xing Dai, Agnes Messanvi, Hezhi Zhang, Jianchang Yan, et al.. Flexible White Light Emitting Diodes Based on Nitride Nanowires and Nanophosphors. ACS photonics, 2016, 3 (4), pp.597-603. ⟨10.1021/acsphotonics.5b00696⟩. ⟨hal-01320610⟩
226 Consultations
227 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More