J 2019

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

FRANTA, Daniel, Jiří VOHÁNKA, Martin BRÁNECKÝ, Pavel FRANTA, Martin ČERMÁK et. al.

Basic information

Original name

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

Authors

FRANTA, Daniel (203 Czech Republic, belonging to the institution), Jiří VOHÁNKA (203 Czech Republic, belonging to the institution), Martin BRÁNECKÝ (203 Czech Republic), Pavel FRANTA (203 Czech Republic, belonging to the institution), Martin ČERMÁK (203 Czech Republic, belonging to the institution), Ivan OHLÍDAL (203 Czech Republic, belonging to the institution) and Vladimír ČECH (203 Czech Republic)

Edition

Journal of Vacuum Science & Technology B, New York, A V S AMER INST PHYSICS, 2019, 2166-2746

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10306 Optics

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 1.511

RIV identification code

RIV/00216224:14310/19:00112018

Organization unit

Faculty of Science

UT WoS

000522021700058

Keywords in English

Spectrophotometry;Gaussian broadening;Optical constants;Optical properties;Phonons;Dielectric properties

Tags

Tags

International impact, Reviewed
Změněno: 17/4/2020 17:21, Mgr. Marie Šípková, DiS.

Abstract

V originále

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.

Links

ED2.1.00/03.0086, research and development project
Name: Regionální VaV centrum pro nízkonákladové plazmové a nanotechnologické povrchové úpravy
LO1411, research and development project
Name: Rozvoj centra pro nízkonákladové plazmové a nanotechnologické povrchové úpravy (Acronym: CEPLANT plus)
Investor: Ministry of Education, Youth and Sports of the CR