Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
A Process for Generating Broadband White Light from Polycrystalline Yttrium Iron Garnet and a Product thereof
Technology Category/Market
Technology: Polycrystalline Yttrium iron garnet (YIG);
Industry: Chemical & Optoelectronics, Clean Energy;
Applications: Indoor Lighting, Color Displays, Precision spectroscopy, visible light communication;Â
Image Gallery
Problem Statement
- In the prior art literature discussion, it is found that the global ecosystem is off-putting by aggravating energy-demands and consequently, the scientific and industrial interests have been concentrating at seeking after the energy-efficient light sources.
- Further, in spite of intense research in said domain, the polycrystalline inorganic bulk materials that intrinsically emit broadband white-light upon illumination with near-UV sources are very out of ordinary and costlier.
- The present patent invention provides solution of above discussed problem by introducing the Yttrium Iron Garnet (YIG) in efficient manner.
Technology
- Patent describes a process for synthesizing polycrystalline yttrium iron garnet.
- Further said process describes about the generating broadband white light from polycrystalline yttrium iron garnet, wherein the broadband white light excited with 370nm excitation source, shown in figure1
- The white light emission is obtained intrinsically from the compound without extrinsic doping of any optically active ion.
Key Features/Value Proposition
Technical Perspective:
- Polycrystalline yttrium iron garnet emits near-white light at excitation wavelength ranging from 325 to 390nm, with white-light emission particularly at 370nm.
Industrial Perspective:
- The color-tunability from spectrum respective to cyan-white-blue-green-yellow-orange-red is achieved by varying the excitation wavelength from 280 to 600 nm, efficiently, cost-effective manner.Â
Questions about this Technology?
Contact for Licensing
smipm-icsr@icsrpis.iitm.ac.in
ipoffice2@iitm.ac.in
Research Lab
Prof. Ramachandra Rao M S
Prof. Lakshmi Ganapathi K
Department of Physics
Intellectual Property
- IITM IDF Ref. 2113;
- IN Patent No: 421760 (Granted)
- PCT Application No. PCT/IN2022/050136
Technology Readiness Level
TRL- 3
Proof of Concept ready