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Thermal Conductivity and Specific Heat of Thin-Film Amorphous Silicon
Abstract
We report the thermal conductivity and specific heat of amorphous silicon thin films measured from 5-300 K using silicon-nitride membrane-based microcalorimeters. Above 50 K the thermal conductivity of thin-film amorphous silicon agrees with values previously reported by other authors. However, our data show no plateau, with a low T suppression of the thermal conductivity that suggests that the scattering of long wavelength, low Q vibrations goes as Q2. The specific heat shows Debye-like behavior below 15 K, with theta(D) = 487 +/- 5 K, and is consistent with a very small contribution of tunneling states in amorphous silicon. Above 15 K, the specific heat deviates less from Debye behavior than does its crystalline allotrope, indicating no significant excess modes (boson peak) in amorphous silicon.
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Citations
Cites
Thermal Conductivity and Specific Heat of Noncrystalline Solids
Zeller, R. C., & Pohl, R. O. (1971) · Physical Review B · doi:10.1103/physrevb.4.2029 · Cited by 1,954
Si-N membrane-based microcalorimetry: Heat capacity and thermal conductivity of thin films
Revaz, B., Zink, B. L., & Hellman, F. (2005) · Thermochimica Acta · doi:10.1016/j.tca.2005.04.004 · Cited by 43
Self-citation
Cited by
Regner, K. T., Sellan, D. P., Su, Z., Amon, C. H., McGaughey, A. J. H., & Malen, J. A. (2013) · Nature Communications · doi:10.1038/ncomms2630 · Cited by 646
Heat transport in amorphous silicon: Interplay between morphology and disorder
He, Y., Donadio, D., & Galli, G. (2011) · Applied Physics Letters · doi:10.1063/1.3574366 · Cited by 121
High Thermal Conductivity of a Hydrogenated Amorphous Silicon Film
Liu, X., Feldman, J. L., Cahill, D. G., Crandall, R. S., Bernstein, N., Photiadis, D. M., Mehl, M. J., & Papaconstantopoulos, D. A. (2009) · Physical Review Letters · doi:10.1103/physrevlett.102.035901 · Cited by 84
Modeling optical absorption for thermoreflectance measurements
Yang, J., Ziade, E., & Schmidt, A. J. (2016) · Journal of Applied Physics · doi:10.1063/1.4943176 · Cited by 37
Metadata
- Authors
- Zink, B. L., Pietri, R., & Hellman, F.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2006-02-07
- Volume
- 96
- Issue
- 5
- Pages
- 055902-055902
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1994176775
- Cited by
- 162
- References
- 2
- FWCI
- 2.82
- Type
- journal article
- Language
- en
- Open access
- closed
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