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Investigation of particulate contamination of heated wafers contained in a closed environment

Title
Investigation of particulate contamination of heated wafers contained in a closed environment
Author
육세진
Keywords
Closed environment; FOUP; Wafer; Particulate contamination; Natural convection
Issue Date
2015-10
Publisher
ELSEVIER SCI LTD
Citation
JOURNAL OF AEROSOL SCIENCE, v. 88, Page. 148-158
Abstract
In this study, the phenomenon of particulate contamination of heated wafers contained in a closed environment like the front opening unified pod (FOUP), which is a fundamental component of minienvironment system in semiconductor manufacturing, was elucidated both experimentally and numerically. The degree of particulate contamination of heated wafers was examined according to the position of the wafers in the closed environment. The results showed that particles, if any, generated inside the closed environment such as the FOUP could be carried by natural convection flow and deposit on the heated wafer placed at the upper position in the closed environment. As a result, the topmost wafer was the most vulnerable to particulate contamination. The effect of the wafer temperature on the degree of particulate contamination of the topmost wafer was investigated, and a narrower contaminated area appeared at a higher wafer temperature condition. (C) 2015 Elsevier Ltd. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S0021850215001019http://hdl.handle.net/20.500.11754/27926
ISSN
0021-8502; 1879-1964
DOI
10.1016/j.jaerosci.2015.06.005
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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