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focusing glass [screen] 【攝影】調焦距用的毛玻璃。

fodder

6 the zn3n2 is prepared on focus glass substrate at low temperature . and for the first time , a p - zno with a carrier density of 1017 ? cm - 3 is obtained by thermal zn3n2 in an oxygen ambient 5 、用等離子體增強的化學汽相沉積的方法制備了zn3n2薄膜,首次通過熱氧化zn3n2的方法,制備出了受主型載流子濃度為1017cm - 3的p - zno薄膜。