1. Vio white LEDs.
http://www.lumination.com/product.php?id=56
2. Solid-state lighting research and development.
http://apps1.eere.energy.gov/buildings/publications/pdfs/ssl/sslmypp2009web.pdf
3. http://www.newark.com/pdfs/datasheets/Lumileds/LUXEONIII_STAR.pdf
4. Gardner NF et al (2007) Blue-emitting InGaN-GaN double-heterostructure light-emitting diodes reaching maximum quantum efficiency above 200 A/cm(2). Appl Phys Lett 91
5. http://www.cree.com/index.asp