Efficient light emitting diode

Light Extraction improves the efficiency of LED. Our method is based on industrially reproducible nanostructures that are more efficient than the microsized structures the industry uses today. The purpose of the project is to – together with DTU Fotonik – demonstrate the method in practice and adapt it to the specifications of the manufacturers.

Project description

Light Extraction has invented a solution that improves the efficiency of LED lights so that they produce more light per watt of power. The solution also reduces heat generation, thereby increasing the efficiency further and prolonging the LED life. The result is the energy savings and lower cost for LED. The solution is based on nano-structuring of LED surface.

Although the market for LED is booming, LED manufacturers are under great pressure to continually reduce prices and increase their competitiveness.

The manufacturers are among the world´s largest companies and primarily based in the Far East. Both things make cooperation with the companies to a resource intensive and time-consuming taks. This is particularly noticeable for a start-up business of Light Extraction.

The EUDP project enables the project to demonstrate the solution in practice and tailor it to customer requirements. Support from EUDP makes it possible for us to provide our future customer the attention and time they require from us to demonstrate – and later hopefully – sell our solution to them.

Results
Light Extraction (LE) improves the efficiency of light emitting diodes (LED). Our method is based on industrially reproducible nanostructures that are more efficient than the microstruc-tures the industry uses today. The purpose of the project is to - together with DTU Photonics - demonstrate the method in practice and adapt it to the specifications of the LED manufac-turers.
In this period, we have developed a new way of compact periodic structures patterning with-out any costly material in the process. This method can be used on LEDs with smooth sur-faces. In the meanwhile, another method mainly based on dry etching technique has been invented to be applied to high power vertically structured LEDs with structured (or uneven) surfaces. Both methods result in an enhancement of more than 50% in photoluminescence (PL).

Key figures

Period:
2014 - 2016
Funding year:
2014
Own financial contribution:
0.78 mio. DKK
Grant:
1.47 mio. DKK
Funding rate:
65 %
Project budget:
2.25 mio. DKK

Category

Oprindelig title
Mere effektivt LED-lys
Programme
EUDP
Technology
Energy efficiency
Case no.
64014-0103

Dokumenter

Participants

Light Extraction (Main Responsible)
Partners and economy
Partner Subsidy Auto financing
Light Extraction 0,69 mio. DKK 0,69 mio. DKK
Danmarks Tekniske Universitet (DTU) 0,79 mio. DKK 0,09 mio. DKK