title
  

Structural control of InP/ZnS core/shell quantum dots enables high-quality white LEDs

Warning The system is temporarily closed to updates for reporting purpose.

Kumar, Baskaran Ganesh and Sadeghi, Sadra and Melikov, Rustamzhon and Mohammadi Aria, Mohammad and Bahmani Jalali, Houman and Ow-Yang, Cleva W. and Nizamoğlu, Sedat (2018) Structural control of InP/ZnS core/shell quantum dots enables high-quality white LEDs. Nanotechnology, 29 (34). ISSN 0957-4484 (Print) 1361-6528 (Online)

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1088/1361-6528/aac8c9

Abstract

Herein, we demonstrate that the structural and optical control of InP-based quantum dots (QDs) can lead to high-performance light-emitting diodes (LEDs). Zinc sulphide (ZnS) shells passivate the InP QD core and increase the quantum yield in green-emitting QDs by 13-fold and redemitting QDs by 8-fold. The optimised QDs are integrated in the liquid state to eliminate aggregation-induced emission quenching and we fabricated white LEDs with a warm, neutral and cool-white appearance by the down-conversion mechanism The QD-functionalized white LEDs achieve luminous efficiency (LE) up to 14.7 lm W-1 and colour-rendering index up to 80. The structural and optical control of InP/ZnS core/shell QDs enable 23-fold enhancement in LE of white LEDs compared to ones containing only QDs of InP core.

Item Type:Article
Uncontrolled Keywords:LED; quantum dot; synthesis; nanoparticles; lighting
Subjects:T Technology > T Technology (General)
Q Science > QD Chemistry
Q Science > QC Physics
ID Code:34968
Deposited By:Cleva W. Ow-Yang
Deposited On:15 Aug 2018 22:09
Last Modified:22 May 2019 14:04

Repository Staff Only: item control page