Citation: |
Zhang Miao, Di Zengfeng, Liu Weili, Luo Suhua, Song Zhitang, Chu Paul K, Lin Chenglu. Mechanism in SiGe-on-Insulator Fabricated by Modified Ge-Condensation Technique[J]. Journal of Semiconductors, 2006, 27(S1): 252-256.
****
Zhang M, Di Z F, Liu W L, Luo S H, Song Z T, Chu P K, Lin C L. Mechanism in SiGe-on-Insulator Fabricated by Modified Ge-Condensation Technique[J]. Chin. J. Semicond., 2006, 27(13): 252.
|
Mechanism in SiGe-on-Insulator Fabricated by Modified Ge-Condensation Technique
-
Abstract
An improved technique is demonstrated to fabricate silicon-germanium on insulator (SGOI) starting with a sandwiched structure of Si/SiGe/Si. After oxidation and successive annealing of the sandwiched structure,a relaxed SGOI structure with 18% Ge fraction is produced.The results indicate that the added Si cap layer is advantageous in suppressing Ge loss at the initial stage of SiGe oxidation and the subsequent annealing process homogenizes the Ge fraction.Raman measurements reveal that the strain in the SiGe layer is fully relaxed at high oxidation temperature (~1150℃) without generating any threading dislocations and crosshatch patterns,which generally exist in the relaxed SiGe layer on bulk Si substrate.-
Keywords:
- SiGe-on-insulator,
- oxidation,
- diffusion
-
References
-
Proportional views