添加剂DTPA对KDP晶体快速生长及性能的影响研究  

Effect of DTPA on Rapid Growth and Performance of KDP Crystal

作　　者：朱胜军[1] 王圣来[1] 丁建旭[1] 刘光霞[1] 孙云[1] 刘文洁[1] 

机构地区：[1]山东大学晶体材料国家重点实验室,济南250100

出　　处：《无机材料学报》2012年第4期405-410,共6页Journal of Inorganic Materials

基　　金：国家自然科学基金(50721002)~~

摘　　要：在添加1×10-4(mol/mol KDP)二乙烯三胺五乙酸(DTPA)的溶液中,利用"点籽晶"快速生长法生长了KDP晶体.实验发现,添加少量DTPA即可使不同饱和温度下的KDP生长溶液的亚稳区宽度均得到提高.利用激光偏振干涉装置研究了不同浓度的DTPA对KDP晶体(100)面生长动力学的影响.发现随DTPA掺杂量增加,临界过饱和度(死区)一直降低,生长速度则是先增加经过一个最大值后减小.表征了晶体的光学透过率和晶体内部的杂质金属离子含量,发现掺杂1×10-4(mol/mol)DTPA大幅提高了快速生长的KDP晶体在紫外区的透过率,并有效地减少了进入晶体内部的杂质金属离子含量.KDP crystals were grown by ＂point seed＂ rapid growth method in the presence of 1×10-4（mol/mol KDP） diethylene triamine penlaacetic acid（DTPA）.Metastable zone width of the solutions with different saturation temperatures were extended by adding a small amount of DTPA.The influence of different concentrations of DTPA on the growth kinetics of（100） face of KDP crystal was studied by laser polarization interference technique.With the DTPA concentration increasing,the critical supersaturation（dead zone） was decreased continually,but the growth rate was firstly increased and then decreased,passing through a maximum.The UV-Vis transmission spectra and impurity content of main metal ions in the crystal were characterized as well.The results showed that the opti-cal transmittance in the UV region was enhanced significantly and the impurity content of main metal ions in the crystal was reduced effectively by the addition of 1×10-4（mol/mol） DTPA.

关 键 词：KDP晶体 快速生长 添加剂 生长动力学 透过率 

分 类 号：O781[理学—晶体学]