Hull City, a city in the East Riding of Yorkshire, will start to replace its 32,000 conventional streetlights with LEDs, expected to save more than GBP 1 million (US $1.44 million) per year.
For three decades, white LEDs have depended on rare earth materials such as yttrium aluminum garnet (YAG) layered onto a blue LED chip (Figure 1). Seoul Viosys Co., Ltd. (KOSDAQ: 092190) today announced that it has broken that dependence. It h... READ
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