Optical Absorption of a Few Unit-Cell Layers of Mo<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">S</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>

R. F. Frindt R. F. Frindt
1965 Physical Review 73 citations

Abstract

An experimental study of the absorption edge of single crystals of Mo${\mathrm{S}}_{2}$ down to a thickness of a few unit-cell layers has been carried out. With crystals less than 30 \AA{} thick, the strong absorption peak in the red part of the spectrum disappears. Structure on the short-wavelength side of this peak disappears at a thickness of about 125 \AA{}. These changes may be due to exciton size effects. The strength of a peak in the orange part of the spectrum is independent of thickness, down to the thickness of a few unit-cell layers. A new peak is observed with crystals less than 50 \AA{} thick.

Keywords

Absorption (acoustics)Materials scienceWavelengthOrange (colour)Absorption edgeAbsorption spectroscopyCrystallographyExcitonAnalytical Chemistry (journal)OpticsMolecular physicsPhysicsChemistryOptoelectronicsBand gapCondensed matter physics

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Publication Info

Year
1965
Type
article
Volume
140
Issue
2A
Pages
A536-A539
Citations
73
Access
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R. F. Frindt (1965). Optical Absorption of a Few Unit-Cell Layers of Mo<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">S</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>. Physical Review , 140 (2A) , A536-A539. https://doi.org/10.1103/physrev.140.a536

Identifiers

DOI
10.1103/physrev.140.a536