packaging technology
Date:2011-05-20 11:56
Status:Be resolved
Question:admin
LED light-emitting part of the core is a p-type and n-type semiconductor pn junction consisting of the die, when the pn junction into the minority carrier and majority carrier recombination, it will send visible light, ultraviolet light or near infrared light. However, photons emitted pn junction non-directional, and immediately fired in all directions have the same probability, therefore, not all the light generated by the die can be released, depending on the quality of semiconductor materials
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