Bias-enhanced nucleation of highly oriented diamond on titanium carbide (111) substrates

Abstract

The bias-enhanced nucleation (BEN) technique has been applied to TiC(111) substrates and resulted in deposition of oriented diamond particles. The orientation was observed via scanning electron microscopy. A dense region of oriented particles was not observed on the samples, presumably due to the excessive twinning of the diamond. However, micrographs taken throughout the substrate showed diamond particles having similar orientation with respect to each other. Some of the diamond particles showed evidence of azimuthal twist and tilting, resulting most likely from the ∼21% lattice mismatch. Raman spectra of the diamond crystals show a strong feature at 1332 cm−1, which is indicative of diamond, and smaller features at 1480 and 1602 cm−1 due to sp2-bonded carbon.

Prospects for the synthesis of large single-crystal diamonds

“…The oriented and heteroepitaxial diamond growth is exemplified by such different materials as sapphire [69], Co [70], Pt [71], TiC [72], graphite [73], BeO [74], Ni 3 Ge [75], and Re [76], which are not discussed below. Detailed reviews of the synthesis of heteroepitaxial and textured diamond films can be found in monographs [2,6,49].…”

Growth, microstructure, and field-emission properties of synthesized diamond film on adamantane-coated silicon substrate by microwave plasma chemical vapor deposition

“…The unique properties of diamond make it an ideal material for a wide range of scientific and technological applications such as optics, microelectronics, tribological, thermal management, biomedical, DNA sensor, and so on. [1][2][3][4][5][6] Recently, diamond deposition on the nondiamond substrates is performed by nucleation processing step. Nucleation, corresponds to the formation of diamond nuclei, i.e., the smallest thermodynamically stable island, at the substrate surface.…”

The synthesis of diamond films on adamantane-coated Si substrate at low temperature

“…The exceptional physical and chemical properties of diamond such as wide band gap, chemical inertness, high carrier mobility, excellent biological compatibility, high propagation speed of acoustic wave, good optical transparency, high thermal conductivity and the greatest hardness that make its use advantageous in a wide range of applications [5][6][7]. Several methods have been proposed for the synthesis of high crystalline diamond films by microwave plasma chemical vapor deposition (MPCVD) at high temperature and pressure [7][8][9][10][11][12][13].…”