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Dislocation-Free Shallow Trench Isolation (STI) Chemical Mechanical Polishing (CMP) Process for Embedded Flash Memory

Journal Solid State Phenomena (Volumes 124 - 126)
Volume Advances in Nanomaterials and Processing
Edited by Byung Tae Ahn, Hyeongtag Jeon, Bo Young Hur, Kibae Kim and Jong Wan Park
Pages 29-32
DOI 10.4028/www.scientific.net/SSP.124-126.29
Citation Nam Hoon Kim et al., 2007, Solid State Phenomena, 124-126, 29
Online since June, 2007
Authors Nam Hoon Kim, Hae Young Yoo, Eui Goo Chang
Keywords Dislocations, Gate Oxide, Shallow Trench Isolation, Thermo-Mechanical Stress
Abstract

The ambient and denuded trench top corner at the step of gate oxidation play an important role to generate defect. Furthermore, dislocation-free flash process is proposed, and its mechanism as well. The impact on dislocation of the other processes is also discussed. And we knew that using of dry oxidation for gate oxide has the characteristic to reduce the dislocation. Consequently, the dislocation free wafer is obtained by changing gate oxide from wet to dry in manufacturing embedded flash.

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