Characterization Techniques for Evaluating Strained Si CMOS Materials
作者:
Qianghua Xie,
Ran Liu,
Xiang‐Dong Wang,
Michael Canonico,
Erika Duda,
Shifeng Lu,
Candi Cook,
Alex A. Volinsky,
Stefan Zollner,
Shawn G. Thomas,
Ted White,
Alex Barr,
Mariam Sadaka,
Bich‐Yen Nguyen,
期刊:
AIP Conference Proceedings
(AIP Available online 1903)
卷期:
Volume 683,
issue 1
页码: 223-227
ISSN:0094-243X
年代: 1903
DOI:10.1063/1.1622475
出版商: AIP
数据来源: AIP
摘要:
The electron and hole mobility of Si complementary metal on oxide field effect transistors (CMOS) can be enhanced by introducing a biaxial tensile stress in the Si channel. This paper outlines several key analytical techniques needed to investigate such layers. Raman scattering is used to measure the strain in the Si channel as well as to map the spatial distribution of strain in Si at a lateral resolution better than 0.5 &mgr;m. Atomic force microscopy (AFM) is used to measure the surface roughness. Transmission electron microscopy (TEM) is used to reveal dislocations in the structure, the nature of the dislocations and the propagation of the dislocations. Secondary ion mass spectrometry (SIMS) is used to monitor the Ge content profile in the structure and the thickness of each layer. In the long term, inline nondestructive techniques are desired for epi‐monitoring in manufacturing. Two techniques, spectroscopic ellipsometry (SE) and x‐ray reflectivity (XRR), have shown promise at this stage. © 2003 American Institute of Physics
点击下载:
PDF
(605KB)
返 回