What question did this study set out to answer?

Determine the thermal conductivity of pure and impurity-doped germanium and silicon single crystals across temperatures from 2 K to 300 K.

January 29, 1957Proceedings of the Royal Society of London A Mathematical and Physical Sciences

The thermal conductivity of germanium and silicon between 2 an d 300° K

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Authors

JCJ. A. CarruthersGoogle (United States)TGT. H. GeballeStanford University HRH. M. RosenbergUniversity of North Carolina at Chapel Hill

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Implication

Experimental analysis reveals impurity-driven decreases in thermal conductivity across germanium and silicon crystals, indicating lattice vibration scattering by impurity energy levels.

Key Points

Determine the thermal conductivity of pure and impurity-doped germanium and silicon single crystals across temperatures from 2 K to 300 K.
Measured thermal conductivity in single crystals of pure n-type germanium and p-type germanium containing 10^14 to 10^19 group III impurity atoms per cm3 between 2 and 90 K, with some measurements extended to room temperature.
Tested pure n-type silicon and gold-doped p-type silicon single crystals over comparable temperature ranges and compared outcomes to Ziman's scattering theory.
Pure germanium matched theoretical dielectric crystal behavior at low temperatures, whereas introducing group III impurities significantly decreased conductivity and altered its temperature dependence.
Measured room-temperature thermal conductivities reached 0.64 watt units in germanium and 1.45 watt units in silicon.
Silicon crystals displayed behavior similar to germanium, demonstrating good qualitative agreement with Ziman's model of lattice vibration scattering by impurity energy levels.

Cite This Study

Carruthers et al. (1957) studied this question.

synapsesocial.com/papers/6a6f7847febe604dd708631a https://doi.org/10.1098/rspa.1957.0014

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Implication

Experimental analysis reveals impurity-driven decreases in thermal conductivity across germanium and silicon crystals, indicating lattice vibration scattering by impurity energy levels.

The thermal conductivity of germanium and silicon between 2 an d 300° K

Discussion

Member takes

Implication

Key Points

Cite This Study

The thermal conductivity of germanium and silicon between 2 an d 300° K

Discussion

Member takes

Implication

Key Points

Cite This Study

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