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Nature Research, Scientific Reports, 1(5), 2015

DOI: 10.1038/srep10460

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A high-performance white-light-emitting-diodes based on nano-single crystal divanadates quantum dots

Journal article published in 2015 by Weiqing Yang, Zhongli Liu, Jun Chen ORCID, Li Huang, Lei Zhang, Hong Pan, Bo Wu, Yuan Lin
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

AbstractWe report a high-performance phosphors-free white light-emitting-diodes (w-LEDs) using Ba2V2O7 or Sr2V2O7 quantum dots that directly heteroepitaxially grown on common quartz substrates by polymer assisted deposition (PAD). The quantum efficiency of quantum dots is as high as 95%. More importantly, electronic local functions, band structure and partial density of states have been firstly calculated to study the luminescent and heteroepitaxial growth mechanisms by the Ab-initio Simulation. Additionally, the glaring white light excited at a wavelength of 325 nm was experimentally observed, which unambiguously demonstrated that such quantum dots can be efficient w-LEDs for solid state lighting.