Browse > Article
http://dx.doi.org/10.7842/kigas.2022.26.5.22

Analysis of Internal Flow and Control Speed for NH3 (Ammonia) Leakage Scenario of ALD Facility  

Lee, Seoung-Sam (Dept. of Safety Engineering, Korea national University of Transportation)
An, Hyeong-hwan (Dept. of Safety Engineering, Korea national University of Transportation)
Publication Information
Journal of the Korean Institute of Gas / v.26, no.5, 2022 , pp. 22-27 More about this Journal
Abstract
Atomic Layer Deposition (ALD) is a facility that deposits an atomic layer on a wafer by causing a chemical reaction after decomposition using heat or plasma by inputting two or more gases during the semiconductor process. The main gas used at this time is NH3 (Ammonia). NH3 has a relatively narrow explosive range with an upper limit (UFL) of 33.6% and a lower limit (LEL) of 15%, but it can explode if a large amount suddenly gathers in one place. It is Velocity and fatal if inhaled or in contact with the skin. NH3 (Ammonia) of ALD (Atomic Layer Deposition) facility is supplied to the chamber through the gas inlet and discharged after the reaction.
Keywords
ALD; CFD; explosion range; explosive Limits - LEL & UEL; degree of dilution;
Citations & Related Records
연도 인용수 순위
  • Reference