direct gap semiconductor meaning in Chinese

直接带隙半导体

With the development of science and technology , more and more oxide crystals are synthesized by more and more advanced technique , the new oxide crystals are incessantly synthesized and the new characters of oxide crystals are incessantly founded . corundum dopped with impurity not only is cherished because of it ' s beautiful appearance , but also is used in the fields such as electrotechnics , mechanism , laser , the optic apparatus and the underlay of semiconductor . sapphire dopped with ti3 + is the best material of the tunable solid laser . zno crystal is material of the direct gap semiconductor ( the width of forbidden band : 3 . 37ev ) . the excited emission in zno crystal at room temperature has been found , so the ultraviolet luminescence in zno semiconductor can be acquired at room temperature
含有少量杂质的刚玉晶体( - al _ 2o _ 3 )不仅由于其色泽艳丽成为人们珍爱的名贵宝石，而且由于它具有的优异性能，被广泛应用于电工、机械、激光器，光学器件和半导体衬底材料。钛蓝宝石是目前最优异的固体宽带调谐激光材料，用于制作飞秒脉冲可调谐激光器。氧化锌晶体是直接带隙宽禁带半导体材料(禁带宽度3 . 37ev ) ，现已发现具有室温下受激发射特性，有可能实现室温下半导体紫外发光。