Neat News 1910 (added 2021-03-24)
Non-toxic infrared LED built
Scientists have built an infrared LED and infrared detector composed of calcium, silicon, and oxygen, avoiding toxic and more expensive cadmium and tellurium.
related: #non_toxic #LED
Scientists have built an infrared LED and infrared detector composed of calcium, silicon, and oxygen, avoiding toxic and more expensive cadmium and tellurium.
related: #non_toxic #LED
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