scholarly journals Development, Properties, and Applications of CVD Diamond-Based Heat Sinks

2020 ◽  
Author(s):  
José Vieira da Silva Neto ◽  
Mariana Amorim Fraga ◽  
Vladimir Jesus Trava-Airoldi
Keyword(s):  
Cvd Diamond ◽  
Heat Sinks

High Temperature Performance, Reliability and Simulation of GaAs Mesfets with CVD Diamond Heat Sinks

1992 ◽  
Vol 260 ◽  
Author(s):  
L. Zhu ◽  
Pin F. Tang ◽  
A. Christou
Keyword(s):  
High Temperature ◽  
Thermal Characteristics ◽  
Temperature Stability ◽  
Cvd Diamond ◽  
Heat Sinks ◽  
Infrared Microscopy ◽  
Element Analysis ◽  
Temperature Performance ◽  
Thermal Measurements ◽  
Microscopy Techniques

ABSTRACTAn investigation of the temperature stability and high temperature characteristics of GaAs FETs on CVD diamond heat sinks was carried out by modeling the high temperature electrical characteristics for GaAs MESFETs and by experimentally measuring the elevated temperature performance. The thermal characteristics were determined experimentally using infrared microscopy techniques. The thermal measurements by infrared microscopy were correlated with results of a finite element analysis calculation of the GaAs FET thermal distribution. Reliability testing at 230°C resulted in an MTF of approximately 2000 hours.

COMPARISON OF THERMAL CONDUCTIVITIES ON ABRADED AND UNTREATED CVD-DIAMOND OBTAINED BY SCANNING THERMAL MICROSCOPY

2002 ◽  
Vol 16 (06n07) ◽  
pp. 922-926 ◽  
Author(s):  
A. ALTES ◽  
R. HEIDERHOFF ◽  
L. J. BALK ◽  
H. G. JENTSCH ◽  
S. M. ROSIWAL
Keyword(s):  
Thermal Conductivity ◽  
Order Approximation ◽  
Cvd Diamond ◽  
Heat Sinks ◽  
Diamond Surface ◽  
Scanning Thermal Microscopy ◽  
Diamond Grit ◽  
Thermal Microscopy ◽  
First Order Approximation ◽  
Micro Structures

Diamond materials have become progressively significant in the fabrication of heat sinks for power devices and lasers. To investigate the influence of polishing on CVD-Diamond, the surfaces of <100> and <110> coatings were analyzed, after a first abrasive treatment on a 30μm diamond grit by scanning thermal microscopy based on a resistive platinum-probe. This technique describes in first order approximation the heat transfer of a metal-diamond interface. Through this method it was possible to diagnose a relevant reduction in thermal conductivity by a harsh sample preparation depending on the crystal orientation. The thermal conductivity of as deposited <100> diamond was measured at 1290 W/mK and was reduced to 250 W/mK. The thermal conductivity of as deposited <110> diamond was determined at 1780 W/mK whereas the same diamond surface, but abraded, shows a thermal conductivity of just 460 W/mK. Additionally the received images which represents the thermal conductivity qualitatively bring forward micro structures like e.g. grain boundaries.

scholarly journals GaN-based heterostructures with CVD diamond heat sinks: A new fabrication approach towards efficient electronic devices

2022 ◽  
Vol 26 ◽  
pp. 101338
Author(s):  
M.Y. Chernykh ◽  
A.A. Andreev ◽  
I.S. Ezubchenko ◽  
I.A. Chernykh ◽  
I.O. Mayboroda ◽  
...  
Keyword(s):  
Electronic Devices ◽  
Cvd Diamond ◽  
Heat Sinks

Thermal and optical applications of thin film diamond

1993 ◽  
Vol 342 (1664) ◽  
pp. 313-322 ◽  
Keyword(s):  
Natural Diamond ◽  
Chemical Vapour ◽  
Wide Band ◽  
Cvd Diamond ◽  
Market Potential ◽  
Heat Sinks ◽  
Diamond Growth ◽  
Large Area ◽  
X Ray ◽  
Optical Applications

Virtually all recent reviews of the market potential for chemical vapour deposited (CVD) diamond have featured the thermal management of electronic semiconductor devices as an imminent application for this new material. There is an existing market for natural diamond substrates (‘heat sinks’) in sub-millimetre sizes, and their thermal performance has been extensively studied, CVD diamond heat sinks in millimetre and larger sizes are already in use, but there are constraints to their applicability arising from thermal and mechanical factors. Their advantages and limitations are discussed. The first ‘optical’ applications of CVD diamond films were as X-ray transmissive components (lithography masks and windows for soft X-ray detectors), but with improvements in the technology of CVD diamond growth a larger market for wide-band infrared transmissive windows is now developing. This results from the availability of large area (greater than 1000 mm 2 ) CVD diamond plates of adequate thickness and with transparency achieved through control of diamond grain size and orientation.

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