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一、前言在场致发光研究中,需用到一透明电极,为了提高效率,减少吸收的損耗,要求透明电极电阻小,透明程度高(对可见光吸收少)。我們在场致发光的研究中,曾对透明电极进行了一些試驗。透明电极一般是用玻璃来作,故叫作导电玻璃。导电玻璃的制备方法有二种:一是在玻璃表面附上一层透明的薄膜,一般是金属膜和半导体膜。二是作成半导体玻璃,如P_2O_5—V_2O_5玻璃就具有导电性。不过第二种方法得出的玻璃是呈黑色的,有时也呈黑灰色。作金属膜要設备較多,透明度也不符合场致发光的要求。噴涂半导体薄膜則較經济且能符合要求。半导体薄膜我們是用SnO_2,它是由SnCl_4加热氧化而成的。SnCl_4本身并不导电,SnO_2才具有半导体性貭。SnO_2的形成为:
I. Introduction In the field of electroluminescence research, a transparent electrode is required. In order to increase the efficiency and reduce the absorption loss, the transparent electrode is required to have low resistance and high transparency (less visible light absorption). In our field-glow study, we conducted some experiments with transparent electrodes. Transparent electrodes are generally made of glass, it is called conductive glass. There are two kinds of conductive glass preparation methods: First, the glass surface attached to a layer of transparent film, usually a metal film and semiconductor film. The second is made of semiconductor glass, such as P_2O_5-V_2O_5 glass has electrical conductivity. However, the second method is black glass, sometimes dark gray. For the metal film to more equipment, transparency does not meet the electroluminescent requirements. Sprayed semiconductor films are more economical and can meet the requirements. We use SnO_2 semiconductor thin film, which is oxidized by the heating of SnCl_4. SnCl_4 itself is not conductive, SnO_2 has a semiconductor 貭. The formation of SnO 2 is: