Abstract
We 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.
Highlights
Wavelength of 325 nm was experimentally observed, which unambiguously demonstrated the capability of the nano-single crystal BVQD or SVQD as a novel phosphors-free white light-emitting-diodes (w-LEDs) model for solid state lighting
The Ab-initio Simulation was employed for the first time to elucidate the luminescent and epitaxial growth mechanisms of BVQD or SVQD by calculating the electronic local functions (ELF), band structure and partial density of states (PDOS)
For a desirable stoichiometry of BVQD or SVQD, inductively coupled plasma-atomic emission spectroscopy was used to determine the final concentration of each solution
Summary
Wavelength of 325 nm was experimentally observed, which unambiguously demonstrated the capability of the nano-single crystal BVQD or SVQD as a novel phosphors-free w-LEDs model for solid state lighting. The crystalline structure diagram shows that the desirable BVQD or SVQD heteroepitaxially grown on common SiO2 substrates.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
