One of the difficulties is the event of far more efficient environmentally friendly LEDs. The theoretical optimum for inexperienced LEDs is 683 lumens per watt but as of 2010 several environmentally friendly LEDs exceed even a hundred lumens per watt. The blue and pink LEDs method their theoretical restrictions.[citation desired] https://sicsbd48248.onzeblog.com/14909305/the-definitive-guide-to-silicon-carbide-diodes