光致发光在钻石检测中的应用  

Application of Photoluminescence in Diamond Testing

作　　者：范春丽[1] 李建军[1] 程佑法[1] 王岳[1] 朱红伟[1] 

机构地区：[1]国家黄金钻石制品质量监督检验中心,济南250014

出　　处：《人工晶体学报》2015年第2期546-550,共5页Journal of Synthetic Crystals

基　　金：国家质量监督检验检疫总局科技计划项目(2012QK258;2013QK164)

摘　　要：采用光致发光系统,在297 K及80 K温度下,应用氩离子激光器(波长为488 nm和514 nm)对合成钻石、HPHT处理钻石、辐照处理钻石和天然钻石进行了测试。结果表明:在80 K低温下的测试结果要远比常温297 K温度下好,可能出现由更多的缺陷产生的吸收峰。通常情况下,对于钻石样品514 nm光源激发,可以得到较多较明显的峰,而在488 nm光源激发时,可以产生503 nm和598 nm处的峰。CVD合成钻石、HPHT处理钻石、辐照处理钻石样品在低温80 K、514 nm激发时,均会出现较为明显的575 nm、637 nm峰,而天然钻石则不会出现或仅有微弱显现及偏移,两者区别明显,可以作为鉴定依据。辐照改色的钻石样品中可见到588 nm、680 nm特征峰,而天然钻石、CVD合成钻石及HPHT处理钻石中均未出现此峰,也可作为鉴定辐照改色钻石的依据。Using photoluminescenee system, under the temperature of 297 K and 80 K, the application of argon ion laser （wavelength of 488 nm and 514 nm） of synthetic diamond, HPHT diamond, irradiation processing diamond and natural diamond was tested. The results show that the low temperature of 80 K test result is much better than normal temperature 297 K temperature, absorption peak produced by more defects may occur. Normally, for diamond sample 514 nm light excitation, can get more obvious peak, in 488 nm light source stimulated, can produce peak at 503 nm and 598 nm. CVD diamond synthesis, HPHT diamond, irradiation processing diamond samples at low temperature 80 K, 514nm excitation, there will be more obvious 575 nm, 637 nm peak, while natural diamond wont appear or only appeared weak and migration, both difference obvious, can be used as identification basis. Visible irradiation of natural diamond samples to 588 nm, 680 nm characteristic peak, and natural diamond, the CVD in the diamond synthetic diamond and HPHT processing does not appear the peak, can also be used as the basis for identification of irradiated natural diamond.

关 键 词：光致发光 CVD合成钻石 HPHT处理钻石 辐照处理钻石 钻石鉴别 

分 类 号：O77[理学—晶体学]