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对于功能复合材料,因复合后能加强某一特性,甚至能产生出新的特性来,所以复合是开发材料性能的独特途径.鉴于近期发展起来的p-型导电高分子材料聚苯胺的各种优良特性,如电变色特性、吸波特性等.为了开发应用,首先应从理论上对其结合的界面特性,可否形成一种p-n结接触进行研究和探讨.通过对n-SrTiO_3陶瓷上复合p-PAn的研究和探讨,证实该复合界面为p-n异质结结构,进一步的研究还需做大量的工作.1 实验过程及测试(1)n-型半导体钛酸锶陶瓷(n-SrTiO_3)的制备.工艺流程图为:配料—球磨混料—干燥—过80目筛—预合成—造粒—成型—排胶—烧成其中,配粒比例为SrCO_3:TiO_2O_5=1:1.01:0.013.球磨时,料:球:水=1:4:2.5.预合成的温度是1200℃下保温2h,空气气氛.烧成的温度是1420～1460℃下,通N_2的还原气氛下.
For functional composites, compounding is a unique way to develop material properties because of the ability to reinforce a certain property after compounding, or even to create new properties. In view of the recent development of various types of polyaniline Excellent characteristics such as electrochromism, absorption characteristics, etc. In order to develop and apply, firstly, we should study and discuss the interface characteristics of the combination and whether a pn junction can be formed.Firstly, the composite p of n-SrTiO_3 ceramic -PAn research confirmed that the composite interface is pn heterojunction structure, further work needs to be done.1 Experimental process and testing (1) n-type semiconductor strontium titanate ceramic (n-SrTiO_3) The process flow chart is as follows: Ingredients - Ball Mill Mixing - Drying - Over 80 mesh sieve - Pre-synthesis - Granulation - Molding - Displacement - Baking Among them, the proportion of the grains is SrCO_3: TiO_2O_5 = 1: 1.01: When the material: ball: water = 1: 4: 2.5 pre-synthesized temperature is 1200 ℃ for 2h, the air atmosphere firing temperature is 1420 ~ 1460 ℃, through the atmosphere of N_2 reduction.