Polycrystalline Diamond Thin Films for Advanced Applications

Abstract

The technological achievements in diamond thin film synthesis over the past decade subsequently led to the utilization of outstanding diamond properties and development of a wide range of applications in various fields of engineering. However, since most chemical vapour deposition (CVD) diamond films are polycrystalline, their characteristics strongly depend on their microstructure. As the number of possible applications for polycrystalline CVD diamond increases, there is constant development and enhancement of the film properties. Polycrystalline diamond in the form of thin films delivers further advantages over thicker polycrystalline layer, e.g., smoother surface, less deposition time and less light absorption. Furthermore, besides the relevant diamond properties, the suitability for applications also depends on various material parameters such as substrate nature, substrate dimensions, possibility of non-planar geometries, surface morphology, electrical conductivity, capability of device fabrication, electrochemical properties and cost.

On the interplay between plasma discharge instability and formation of free-standing graphene nanosheets in a dual-channel microwave plasma torch at atmospheric pressure

“…Deposits containing nanocrystalline diamond nanoparticles were prepared when P MW was increased even further to 420 W, and at the same time the Q C and Q S flow rates were low (220 and 300 sccm). This observation is in agreement with the assumptions made in previous paragraphs discussing a low C 2 /C ratio with a low Q S and long residence time (low Q C ) in combination with high MW energy deposited in the plasma, when the process is prone to formation of the sp 3 phase [62][63][64]. Figure 7(a)-(d) illustrates the morphological diversity of the above-mentioned carbon nanomaterials.…”

Magnetic Resonance Study of Bulky CVD Diamond Disc

“…In many samples grown for both research and applications, relatively thin (up to tens of microns) CVD diamond films are considered [13][14][15][16][17][18][19][20][21][22][23][24]. In the future, a variety of optical, thermal, mechanical, and radiation sensor applications will require more substantial CVD diamonds [25][26][27][28][29][30][31][32].…”

Enhancing Luminescence Properties of Lab-Grown Diamond Films with Upconversion Nanoparticles for High-Performance Surface Temperature Sensing in Advanced Applications

“…Because of these qualities, PCD films are ideal substrates for an array of applications which include protective coatings, electrical devices, and optical windows. 30 PCD films stabilized with UCNPs offer a unique platform that can combine the exceptional optical capabilities of UCNPs with the outstanding mechanical and optical attributes of PCD films.…”

“…PCD or LGD films are composed of highly crystalline diamond grains exhibiting remarkable mechanical hardness, chemical stability, high thermal conductivity, and excellent optical transparency over a wide spectrum range. Because of these qualities, PCD films are ideal substrates for an array of applications which include protective coatings, electrical devices, and optical windows . PCD films stabilized with UCNPs offer a unique platform that can combine the exceptional optical capabilities of UCNPs with the outstanding mechanical and optical attributes of PCD films.…”