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Pulsed laser deposited tetrahedral amorphous carbon with high sp(3) fractions and low optical bandgaps

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Pulsed laser deposited tetrahedral amorphous carbon with high sp(3) fractions and low optical bandgaps. / Miyajima, Yoji; Henley, S. J. ; Adamopoulos, George et al.
In: Journal of Applied Physics, Vol. 105, No. 7, 15.04.2009, p. 073521.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Miyajima, Y, Henley, SJ, Adamopoulos, G, Stolojan, V, Garcia-Caurel, E, Drévillon, B, Shannon, JM & Silva, SRP 2009, 'Pulsed laser deposited tetrahedral amorphous carbon with high sp(3) fractions and low optical bandgaps', Journal of Applied Physics, vol. 105, no. 7, pp. 073521. https://doi.org/10.1063/1.3095667

APA

Miyajima, Y., Henley, S. J., Adamopoulos, G., Stolojan, V., Garcia-Caurel, E., Drévillon, B., Shannon, J. M., & Silva, S. R. P. (2009). Pulsed laser deposited tetrahedral amorphous carbon with high sp(3) fractions and low optical bandgaps. Journal of Applied Physics, 105(7), 073521. https://doi.org/10.1063/1.3095667

Vancouver

Miyajima Y, Henley SJ, Adamopoulos G, Stolojan V, Garcia-Caurel E, Drévillon B et al. Pulsed laser deposited tetrahedral amorphous carbon with high sp(3) fractions and low optical bandgaps. Journal of Applied Physics. 2009 Apr 15;105(7):073521. doi: 10.1063/1.3095667

Author

Miyajima, Yoji ; Henley, S. J. ; Adamopoulos, George et al. / Pulsed laser deposited tetrahedral amorphous carbon with high sp(3) fractions and low optical bandgaps. In: Journal of Applied Physics. 2009 ; Vol. 105, No. 7. pp. 073521.

Bibtex

@article{eb49ab460627426488245249c94ed6de,
title = "Pulsed laser deposited tetrahedral amorphous carbon with high sp(3) fractions and low optical bandgaps",
abstract = "Amorphous carbon films with sp(3) bonded carbon fractions over 70% are deposited by pulsed laser deposition. However, the optical bandgap obtained from optical transmittance and spectroscopic ellipsometry analysis shows the values to be below 1.0 eV. A wide range of measurements such as electron energy loss spectroscopy, visible Raman, spectroscopic ellipsometry, optical transmittance, and electrical characterization are performed to elucidate the bonding configurations that dictate microstructural, optical and electrical properties, and their linkage to band structure changes. It is found that stress-induced electronic localized states play an important role in the physical properties of the films deposited. The optical bandgap is shown not to be a good measure of the electrical bandgap, especially for high electric field conduction in these tetrahedral amorphous carbon films.",
keywords = "DIAMOND-LIKE CARBON, ELECTRON-ENERGY-LOSS, CONDUCTION MECHANISM, RAMAN-SPECTROSCOPY",
author = "Yoji Miyajima and Henley, {S. J.} and George Adamopoulos and V. Stolojan and E. Garcia-Caurel and B. Dr{\'e}villon and Shannon, {J. M.} and Silva, {S. R. P.}",
year = "2009",
month = apr,
day = "15",
doi = "10.1063/1.3095667",
language = "English",
volume = "105",
pages = "073521",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "AMER INST PHYSICS",
number = "7",

}

RIS

TY - JOUR

T1 - Pulsed laser deposited tetrahedral amorphous carbon with high sp(3) fractions and low optical bandgaps

AU - Miyajima, Yoji

AU - Henley, S. J.

AU - Adamopoulos, George

AU - Stolojan, V.

AU - Garcia-Caurel, E.

AU - Drévillon, B.

AU - Shannon, J. M.

AU - Silva, S. R. P.

PY - 2009/4/15

Y1 - 2009/4/15

N2 - Amorphous carbon films with sp(3) bonded carbon fractions over 70% are deposited by pulsed laser deposition. However, the optical bandgap obtained from optical transmittance and spectroscopic ellipsometry analysis shows the values to be below 1.0 eV. A wide range of measurements such as electron energy loss spectroscopy, visible Raman, spectroscopic ellipsometry, optical transmittance, and electrical characterization are performed to elucidate the bonding configurations that dictate microstructural, optical and electrical properties, and their linkage to band structure changes. It is found that stress-induced electronic localized states play an important role in the physical properties of the films deposited. The optical bandgap is shown not to be a good measure of the electrical bandgap, especially for high electric field conduction in these tetrahedral amorphous carbon films.

AB - Amorphous carbon films with sp(3) bonded carbon fractions over 70% are deposited by pulsed laser deposition. However, the optical bandgap obtained from optical transmittance and spectroscopic ellipsometry analysis shows the values to be below 1.0 eV. A wide range of measurements such as electron energy loss spectroscopy, visible Raman, spectroscopic ellipsometry, optical transmittance, and electrical characterization are performed to elucidate the bonding configurations that dictate microstructural, optical and electrical properties, and their linkage to band structure changes. It is found that stress-induced electronic localized states play an important role in the physical properties of the films deposited. The optical bandgap is shown not to be a good measure of the electrical bandgap, especially for high electric field conduction in these tetrahedral amorphous carbon films.

KW - DIAMOND-LIKE CARBON

KW - ELECTRON-ENERGY-LOSS

KW - CONDUCTION MECHANISM

KW - RAMAN-SPECTROSCOPY

U2 - 10.1063/1.3095667

DO - 10.1063/1.3095667

M3 - Journal article

VL - 105

SP - 073521

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 7

ER -