NEWLED - 8th Newsletter
Monday, Oct 31, 2016
In October, the FP7 project NEWLED will draw to a close.The principle objective of NEWLED has been the development of high brightness white LEDs with high colour rendering index (CRI >95) and efficacies of more than 200 lm/W.Along this, the team also investigated advanced packaging to enable effective heat dissipation and light management to realise lifetimes of more than 50k hours.The devices will have immediate applications in automotive, industrial lighting and displays industries, while widespread implementation would reduce global energy consumption by approximately 10% and reduce CO2 emissions by 3 Bn tonnes with consequent economic and environmental benefits.

NEWLED collaborators have played a tremendous role in developing and exploiting arrange of challenging and cutting-edge research directions to advance both the physicalunderstanding and the key technology underlying novel light-emitting diodes with superior capabilities. During the project, excellent progress has been made: Novel nanostructures and devices have been designed, fabricated and evaluated by the project partners; detailed theoretical models have been developed, e.g. for the optimal ways of colour mixing providing the optimal emission wavelengths, spectral widths and necessary efficacies of the individual monochromatic LEDs that serve as a guide for the development of high-efficacy white LEDs with high CRI. Novel crystal growth approaches are used to develop superior materials that are processed by best-in-class chip processes facilitating optimal current spreading and light extraction.

NEWLED has already delivered significant advances and world record performances in realisation of a new class of LEDs with high capabilities.To date, white LEDs with efficacy of 200 lm/W at CRI of 90 with wall-plug efficiency of ~60% have been demonstrated by the NEWLED consortium.The advantage of the use of a dual-colour monolithic bluecyan LED emitting in the 420-480 nm wavelength range with a mixture of green and red phosphors has also been explored to achieve warm-white light emission with correlated colour temperature (CCT) of ~3300K and superior CRI of 98.6, thus allowing a reduction of the number of phosphors used for warm-white light emission with high CRI.

For more information, please download MS636 Project Newsletter and Stakeholder targeted press articles.

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