Effect of doping level during rapid thermal processing of multilayer structures

Document Type

Article

Publication Title

Journal of Materials Research

Publication Date

1-1-1999

Abstract

A numerical model has been developed to examine the temperature history of a multilayer wafer undergoing rapid thermal processing (RTP) for various doping densities. Partial transparency and thin film interference effects are considered. Doping levels from approx. 1015 to approx. 1018 cm-3 are examined. Numerical temperature predictions of the lightly doped wafer are compared with experimental measurements. Heating rates for the lightly doped wafer fluctuate due to partial transparency effects and reach a maximum of approx. 50°C/s. The heavily doped wafer sees a maximum heating rate of approx. 100°C/s. Because the wafers are opaque above 700°C regardless of their level of doping, all wafers reach steady state at approx. 845°C.

Volume

14

Issue

6

First Page

2402

Last Page

2410

DOI

10.1557/JMR.1999.0323

ISSN

08842914

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