采用扫描电镜及EDS测试研究了高电阻CdZnTe金电极与外引线的超声焊接工艺,探讨了CdZnTe表面处理工艺、接触电极厚度及焊接参数对引线超声焊接质量的影响规律.研究结果表明,经机械抛光表面处理的CdZnTe晶片,其金电极与外引线间容易实现超声焊接;CdZnTe电极厚度与引线焊合率之间呈抛物线关系,获得最佳焊接质量的电极厚度为180nrn左右.楔入压力和焊接功率是影响CZT金电极与引线焊接质量的重要因素,当焊接功率为2W、焊接压力为60×10-3kg、焊接时间20ms和烧球强度1.5W时,易获得良好的CdZnTe金电极与引线焊接接头.
参考文献
| [1] | HUTCHHY J A;GARNER C M .A Latest technology Roadmap guides development of new devices and materials[J].Solid State Technology,2006,49(01):31-34. |
| [2] | JONES L T;WOOLLAM P B .Resolution improvement in CdTe gamma detectors using pusle-shape discrimination[J].Nuclear Instruments and Methods in Physics Research,1975,124:591-595. |
| [3] | Y. Nemirovsky;G. Asa;J. Gorelik;A. Peyser .Recent progress in n-type CdZnTe arrays for gamma-ray spectroscopy[J].Nuclear Instruments and Methods in Physics Research, Section A. Accelerators, Spectrometers, Detectors and Associated Equipment,2001(1/2):325-333. |
| [4] | Z. Pastuovic;M. Jaksic;R.B. James;K. Chattopadhyay;X. Ma;A. Burger .Influence of electrical contacts on charge collection profiles in CdZnTe studied by IBIC[J].Nuclear Instruments and Methods in Physics Research, Section A. Accelerators, Spectrometers, Detectors and Associated Equipment,2001(1/2):254-261. |
| [5] | NARITE T;BLOSER P F;GRINDLAY J E et al.Development of gold contacted flip-chip detectors with IMARAD CZT[J].Proceedings of Spie,2000,4141:89-96. |
| [6] | 阮世勋,雷运青.金属超声焊及应用[J].新技术新工艺,2004(12):37-40. |
| [7] | 计红军,李明雨,王春青.超声引线键合点形态及界面金属学特征[J].电子工艺技术,2005(05):249-253. |
| [8] | 朱正宇,胡巧声.半导体封装超声波压焊的工艺参数优化[J].电子工业专用设备,2006(03):55-60. |
| [9] | KIM K S;SONG J Y;CHUNG E K et al.Relationship between mechanical properties and microstrueture of uhra-fine gold bonding wires[J].Mechanics of Materials,2006,38:119-127. |
| [10] | Jun Qi;Ngar Chun Hung;Ming Li .Effects of Process Parameters on bondability in Ultrasonic Ball Bonding[J].Scripta materialia,2006(2):293-297. |
| [11] | LI H J;WANG C Q;GUAN J W et al.Evolution of the bond interface during ultrasonic A1 Si wire wedge bonding process[J].Journal of Materials Processing Technology,2007,182:202-206. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%