Abstract:
A method of preparing a tungsten metal material with high purity, comprising the steps of (A) providing a tungsten metal powder to mix with a metal nitrate to form a mixed powder slurry; (B) ball-grinding the mixed powder slurry to obtain a uniformly mixed powder; (C) sintering the uniformly mixed powder to obtain the tungsten metal material with high purity. Accordingly, the tungsten metal material with purity more than 99.9% can be prepared, so as to prepare the tungsten metal target.
Abstract:
A bismuth ferrite thin-film solar cell and a method of manufacturing the same control the quantity of Fe2+ defected in the bismuth ferrite thin-film by doping with zinc. Reduction of the quantity of Fe2+ defects in the bismuth ferrite thin-film is conducive to the increase of closed-circuit current density and enhancement of photoelectric conversion efficiency.