Thermal analysis of submicron nanocrystalline diamond films

Rossi, Stefano; Alomari, M.; Zhang, Y.; Bychikhin, S.; Pogány, D.; Weaver, Jonathan; Kohn, E.

doi:10.1016/j.diamond.2013.10.004

Cited by 20 publications

(10 citation statements)

References 19 publications

(25 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nanocrystalline diamond films grown under different growth conditions can exhibit similar average grain sizes but rather different elastic properties which also affect the thermal properties . Also the thermal conductivities of nanocrystalline diamond films show a wide range . Besides that, the thermal conductivity, both in‐plane as well as cross‐plane often shows an evolution with film thickness due to increasing grain dimensions for increasing film thickness .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Thermal conductivity of nanocrystalline diamond films grown by hot filament chemical vapor deposition

Mohr

Brühne

Fecht

2016

Physica Status Solidi (a)

View full text Add to dashboard Cite

Nanocrystalline diamond films were grown by hot filament chemical vapor deposition. The thermal conductivity of the films was measured using the 3v-method. Nanocrystalline diamond films grown under the presented growth conditions are rather homogeneous in film properties within the entire film thickness and deposited area. The considerably smaller thermal conductivities, compared to single crystal diamond can be explained by an influence of the grain boundaries with varying grain sizes. We use a theoretical approach to describe the thermal conductivity of nanocrystalline materials to characterize the grain boundaries thermal boundary conductivity also with respect to the growth conditions.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Also the thermal conductivities of nanocrystalline diamond films show a wide range . Besides that, the thermal conductivity, both in‐plane as well as cross‐plane often shows an evolution with film thickness due to increasing grain dimensions for increasing film thickness .…”

Section: Introductionmentioning

confidence: 99%

Thermal conductivity of nanocrystalline diamond films grown by hot filament chemical vapor deposition

Mohr

Brühne

Fecht

2016

Physica Status Solidi (a)

View full text Add to dashboard Cite

show abstract

“…20 and 25) to 500 W/mK (Ref. 26) and crossplane thermal conductivities ranging from 80 W/mK (Ref. 24) to more than 800 W/mK (Refs.…”

mentioning

confidence: 99%

“…22, 26, and 27) have been reported for sub 2 lm c-NCD. 22,26 These large variations in the reported values of j may arise not only from differences in the samples but also because of the different experimental techniques used in each experiment. 28 This makes it difficult to draw a clear conclusion about the phonon transport near the polycrystalline diamond nucleation site, i.e., in the c-NCD region.…”

mentioning

confidence: 99%

Thermal conductivity of ultrathin nano-crystalline diamond films determined by Raman thermography assisted by silicon nanowires

Anaya

Rossi

Alomari

et al. 2015

Applied Physics Letters

View full text Add to dashboard Cite

The thermal transport in polycrystalline diamond films near its nucleation region is still not well understood. Here, a steady-state technique to determine the thermal transport within the nano-crystalline diamond present at their nucleation site has been demonstrated. Taking advantage of silicon nanowires as surface temperature nano-sensors, and using Raman Thermography, the in-plane and cross-plane components of the thermal conductivity of ultra-thin diamond layers and their thermal barrier to the Si substrate were determined. Both components of the thermal conductivity of the nano-crystalline diamond were found to be well below the values of polycrystalline bulk diamond, with a cross-plane thermal conductivity larger than the in-plane thermal conductivity. Also a depth dependence of the lateral thermal conductivity through the diamond layer was determined. The results impact the design and integration of diamond for thermal management of AlGaN/GaN high power transistors and also show the usefulness of the nanowires as accurate nano-thermometers.

show abstract

“…However, materials like HOPG conduct heat very well across a graphitic plane, but poorly between planes. Similarly, some types of CVD diamond exhibit initial columnar growth during synthesis, with the associated thermal conduction anisotropy [3][4][5].…”

Section: "Nsmentioning

confidence: 99%

Cross-linked carbon nanotube heat spreader

Konesky¹

2014

SPIE Proceedings

View full text Add to dashboard Cite

Isolated individual carbon nanotubes (CNTs) have shown exceptional thermal conductivity along their axis, but have poor thermal transfer between adjacent CNTs. Thick bundles of aligned CNTs have been used as heat pipes, but the thermal input and output areas are the same, providing no heat spreading effect. Energetic argon ion beams are used to join, or cross-link overlapping CNTs in a thick film to form an interpenetrating network with an isotropic thermal conductivity of 2150 W/m-K. Such thick films may be used as heat spreaders to enlarge the thermal footprint of various electronic and semiconductor devices, laser diodes and CPU chips, for example, to enhance cooling.

show abstract

Thermal analysis of submicron nanocrystalline diamond films

Cited by 20 publications

References 19 publications

Thermal conductivity of nanocrystalline diamond films grown by hot filament chemical vapor deposition

Thermal conductivity of nanocrystalline diamond films grown by hot filament chemical vapor deposition

Thermal conductivity of ultrathin nano-crystalline diamond films determined by Raman thermography assisted by silicon nanowires

Cross-linked carbon nanotube heat spreader

Contact Info

Product

Resources

About