There are many different methods of growth cdse single crystals , but they have some deficiencies . in our study , the technique of the purification of starting materials had been improved : the purification of polycrystalline and growth of cdse single crystals had be carried on in the same quartz ampoule and starting materials had been transferred into the growth ampoule directly in the last process of purification , which avoided the extra contamination 由于制备具有高纯度和高电阻率的cdse单晶体非常困难：到目前为止，制备cdse单晶体的方法虽然很多，如溶液法、熔体法、温度梯度溶剂区熔法( tgsz )等，但是都因各自的不足而没有成为简便而理想的制备cdse单晶体的方法，所以cdse单晶体没有得到广泛的应用。
By adopting the method of saturated aqueous salt solutions , the paper designs the equipment to produce the humidity source and scale pi sensors . based on the design and long period measurement of demarcated equipment , we get the lots of curve and data that shows the linear relation between capacity and moisture and good linearity and resolving power 采用饱和盐溶液法得到相应级别的湿度标准，对传感器进行标定试验并采用相应的数据处理方法，建立了感湿特征量与气相湿度之间的数学关系，最终给出其数学模型和各种指标。
