Cầu thủ ghi nhiều bàn thắng nhất cho đội tuyển quốc gia luôn là chủ đề nhận được nhiều...

Green LEDs First InGaN green LED in 1995 – efficiency 3 lumens/watt Today – efficiency 50 lumens/watt Green filtered...

LED Traffic Lights and the Largest Hotel Sign in the World Previous slide Next slide Back to first slide...

Can we design efficient red LEDs? Holonyak at GE mixed Ga+As+P – made red LED efficiency 0.1 c.f. Edison...

Traffic Lights Tomorrow LEDs made possible by designed materials Replace every 10 years, not six months Brighter than lamps...

This Years Sterling Lecture: Gallium Nitride Probably the most important new electronic material since silicon Can have GaN LEDs...