Among the list of troubles is the event of more efficient environmentally friendly LEDs. The theoretical most for eco-friendly LEDs is 683 lumens for every watt but as of 2010 few environmentally friendly LEDs exceed even 100 lumens for each watt. The blue and purple LEDs solution their theoretical limits.[citation https://thebookmarkid.com/story13490355/the-basic-principles-of-bare-die-sic-schottky-diodes