Structure and optical properties of C60 thin films

D. Faiman; S. Goren; E. A. Katz; M. Koltun; N. Melnik; A. Shames; S. Shtutina

doi:10.1016/S0040-6090(96)09043-8

Structure and optical properties of C₆₀ thin films

D. Faiman, S. Goren, E. A. Katz, M. Koltun, N. Melnik, A. Shames, S. Shtutina

Research output: Contribution to journal › Article › peer-review

43 Scopus citations

Abstract

By varying the deposition conditions of C₆₀ thin films and using X-ray diffraction techniques to study the results, we obtain a continuum of structure types ranging from crystalline to amorphous. By measuring the absorption spectra of these films we find that as the film crystallinity increases the fundamental absorption edge and nearby spectral features shift progressively to longer wavelengths. Using a Tauc-type approximation, we find that the optical bandgap E_g = 1.3-1.6 eV for crystalline films and E_g=2.4-2.6 eV for amorphous films. Intermediate values of E_g are obtained depending upon the degree of crystallinity of the film.

Original language	English
Pages (from-to)	283-286
Number of pages	4
Journal	Thin Solid Films
Volume	295
Issue number	1-2
DOIs	https://doi.org/10.1016/S0040-6090(96)09043-8
State	Published - 28 Feb 1997

Keywords

Band structure
Carbon
Optical spectroscopy
Structural properties

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/S0040-6090(96)09043-8

Cite this

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title = "Structure and optical properties of C60 thin films",

abstract = "By varying the deposition conditions of C60 thin films and using X-ray diffraction techniques to study the results, we obtain a continuum of structure types ranging from crystalline to amorphous. By measuring the absorption spectra of these films we find that as the film crystallinity increases the fundamental absorption edge and nearby spectral features shift progressively to longer wavelengths. Using a Tauc-type approximation, we find that the optical bandgap Eg = 1.3-1.6 eV for crystalline films and Eg=2.4-2.6 eV for amorphous films. Intermediate values of Eg are obtained depending upon the degree of crystallinity of the film.",

keywords = "Band structure, Carbon, Optical spectroscopy, Structural properties",

author = "D. Faiman and S. Goren and Katz, {E. A.} and M. Koltun and N. Melnik and A. Shames and S. Shtutina",

note = "Funding Information: We wish to acknowledge funding by the Israel Ministry of Energy and Infrastructure and the Rashi Foundation.",

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T1 - Structure and optical properties of C60 thin films

AU - Faiman, D.

AU - Goren, S.

AU - Katz, E. A.

AU - Koltun, M.

AU - Melnik, N.

AU - Shames, A.

AU - Shtutina, S.

N1 - Funding Information: We wish to acknowledge funding by the Israel Ministry of Energy and Infrastructure and the Rashi Foundation.

PY - 1997/2/28

Y1 - 1997/2/28

N2 - By varying the deposition conditions of C60 thin films and using X-ray diffraction techniques to study the results, we obtain a continuum of structure types ranging from crystalline to amorphous. By measuring the absorption spectra of these films we find that as the film crystallinity increases the fundamental absorption edge and nearby spectral features shift progressively to longer wavelengths. Using a Tauc-type approximation, we find that the optical bandgap Eg = 1.3-1.6 eV for crystalline films and Eg=2.4-2.6 eV for amorphous films. Intermediate values of Eg are obtained depending upon the degree of crystallinity of the film.

AB - By varying the deposition conditions of C60 thin films and using X-ray diffraction techniques to study the results, we obtain a continuum of structure types ranging from crystalline to amorphous. By measuring the absorption spectra of these films we find that as the film crystallinity increases the fundamental absorption edge and nearby spectral features shift progressively to longer wavelengths. Using a Tauc-type approximation, we find that the optical bandgap Eg = 1.3-1.6 eV for crystalline films and Eg=2.4-2.6 eV for amorphous films. Intermediate values of Eg are obtained depending upon the degree of crystallinity of the film.

KW - Band structure

KW - Carbon

KW - Optical spectroscopy

KW - Structural properties

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