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We demonstrate the enhancement of light extraction efficiency (LEE) of gallium-nitride (GaN)-based green light-emitting diode (LED) through a nano-micro complex patterned sapphire substrate (NMCPSS). The NMCPSS was prepared by inductively coupled plasma etching conventional microscale PSS with nickel nano-particles as the mask. The effect of NMCPSS on light output power of GaN-based green LED was...
In this paper, the reaction couples were prepared to investigate the interaction between Sn and Cu substrate with various surface finishes. The studied interfacial systems contain Sn/Ni/Ag/Cu, Sn/Ag/Cu and Sn/Cu/Ag/Cu. The corresponding surface finish, Ag or Ni layer, is about 1~2μM. In the Sn/Ni/Ag/Cu reaction, the formed phase was Ni3Sn4 at first, indicating that Sn reacted with Ni at the Sn/Ni...
A new method for manufacturing of arbitray cross section spinnerets. Application of UV-LIGA technique to fabricate the spinneret capillarys have been preliminarily discussed. Spinneret plate were deposited by electrotyping method firstly, then bond it with the outer frame using laser welding, the entire forming of spinneret is realized. The results show that the method not only can fabricate spinnerets...
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