Publication detail

Optical properties of the crystalline silicon wafers described using the universal dispersion model

BRÁNECKÝ, M. ČECH, V.

Original Title

Optical properties of the crystalline silicon wafers described using the universal dispersion model

Type

journal article in Web of Science

Language

English

Original Abstract

The optical properties of a slightly boron doped float-zone crystalline silicon wafer are studied using ellipsometry and spectrophotometry in a wide spectral range from far IR to vacuum UV. One side of the wafer was cleaned in an argon plasma, which influenced the optical properties of silicon near the surface. The dielectric response of silicon was modeled using a simplified universal dispersion model which is constructed on the basis of parameterization of the joint density of states describing both the electronic and phonon excitations. Several variants of models describing phonon absorption and interband transitions are discussed. It was possible to accurately determine the optical constants of bulk silicon and the optical constants near the perturbed surface over a wide spectral range. These optical constants agree well with those found in other works. From the optical measurements, it was also possible to determine the thickness of the wafer and the static value of resistivity, and the determined values agreed with nominal values specified for the wafer.

Keywords

crystalline silicon; dispersion model; optical properties

Authors

BRÁNECKÝ, M.; ČECH, V.

Released

10. 10. 2019

ISBN

1071-1023

Periodical

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B

Year of study

37

Number

6

State

United States of America

Pages from

1

Pages to

14

Pages count

14

URL

https://avs.scitation.org/doi/10.1116/1.5122284

BibTex

@article{BUT160078,
  author="Martin {Bránecký} and Vladimír {Čech}",
  title="Optical properties of the crystalline silicon wafers described using the universal dispersion model",
  journal="JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B",
  year="2019",
  volume="37",
  number="6",
  pages="1--14",
  doi="10.1116/1.5122284",
  issn="1071-1023",
  url="https://avs.scitation.org/doi/10.1116/1.5122284"
}