本文利用快速退火对 8″直拉硅单晶片中的流动图形缺陷(FPDs)进行了研究.首先用Secco腐蚀液腐蚀了大直径直拉硅片,利用光学显微镜观察了FPDs的宏观分布,并用原子力显微镜(AFM)对原生FPDs的微观形貌进行观察,证明了 FPDs是一种空位型原生缺陷,然后采用了高温快速热处理,分别在N2、N2/O2(3%)、Ar三种气氛中对原生直拉单晶硅片进行了处理.对比退火前后FPDs密度的变化,分析了高温快速热处理对直拉硅单晶片中FPDs的影响,实验表明1200℃快速热处理180s可以显著降低硅片表面的FPDs.
参考文献
[1] | 施锦行.CZ硅单晶中原生缺陷的特性[J].半导体技术,1999(03):41-44. |
[2] | Tamatska M;Sasaki T;Hagimoto K;Rozgonyi G.ULSI Science and Technology[A].Pennington:The Electrochemical Society NJ,1997:197-199. |
[3] | Furumura Y.Proc. 2nd Int. Symp. Advanced Science & Tech. of Si Materials[A].Hawaii,1996:418. |
[4] | Miyazaki M;Miyazaki S;Yanase Y .Microstructure Observation of "Crystal-Originated Particles" on Silicon Wafers[J].Japanese Journal of Applied Physics,1995,34:6303-6307. |
[5] | Furukawa J;Furuya H .Annealing Behavior of a Light Scattering Tomography Defect near the Surface of Si Wafers[J].Japanese Journal of Applied Physics,1995,34:156-158. |
[6] | Nakamura K.;Kubota T.;Iida T.;Shimanuki Y.;Kotooka T. Tomioka J.;Saishoji T. .FORMATION PROCESS OF GROWN-IN DEFECTS IN CZOCHRALSKI GROWN SILICON CRYSTALS[J].Journal of Crystal Growth,1997(1):61-72. |
[7] | Sadamtsu S;Umeno S;Koike Y .Dependence of the Grown-in Defects Distribution on Growth Rates in Czochralski Silicon[J].Japanese Journal of Applied Physics,1993,32:3675-3681. |
[8] | Takeno H;Ushio S;Takenaka T.Defect Engineering in Semiconductor Growth, Proccessing and Device Technology eds[M].Pittsburgh:Materials Research Society PA,1992:51. |
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%