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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/24974

Title: On the Origin of Diamond Plates Deposited at Low Temperature
Authors: Drijkoningen, Sien
Pobedinskas, Paulius
Korneychuk, Svetlana
Momot, Aleksandr
Balasubramaniam, Yaso
Van Bael, Marlies K.
Turner, Stuart
Verbeeck, Jo
Nesladek, Milos
Haenen, Ken
Issue Date: 2017
Citation: CRYSTAL GROWTH & DESIGN, 17(8), p. 4306-4314
Abstract: The crucial requirement for diamond growth at low temperatures, enabling a wide range of new applications, is a high plasma density at a low gas pressure, which leads to a low thermal load onto sensitive substrate materials. While these conditions are not within reach for resonance cavity plasma systems, linear antenna microwave delivery systems allow the deposition of high quality diamond films at temperatures around 400 degrees C and at pressures below 1 mbar. In this work the codeposition of high quality plates and octahedral diamond grains in nanocrystalline films is reported. In contrast to previous reports claiming the need for high temperatures (T >= 850 degrees C), low temperatures (320 degrees C <= T <= 410 degrees C) were sufficient to deposit diamond plate structures. Cross-sectional high resolution transmission electron microscopy studies show that these plates are faulty cubic diamond terminated by large {111} surface facets with very little sp(2) bonded carbon in the grain boundaries. Raman and electron energy loss spectroscopy studies confirm a high diamond quality, above 93% sp(3) carbon content. Three potential mechanisms, that can account for the initial development of the observed plates rich with stacking faults, and are based on the presence of impurities, are proposed.
Notes: [Drijkoningen, Sien; Pobedinskas, Paulius; Momot, Aleksandr; Balasubramaniam, Yasodhaadevi; Van Bael, Marlies K.; Nesladekt, Milos; Haenen, Ken] Hasselt Univ, Inst Mat Res IMO, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. [Drijkoningen, Sien; Pobedinskas, Paulius; Momot, Aleksandr; Balasubramaniam, Yasodhaadevi; Van Bael, Marlies K.; Nesladekt, Milos; Haenen, Ken] IMEC VZW, IMOMEC, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. [Korneychuk, Svetlana; Turner, Stuart; Verbeeck, Jo] Univ Antwerp, Electron Microscopy Mat Sci EMAT, Antwerp, Belgium.
URI: http://hdl.handle.net/1942/24974
DOI: 10.1021/acs.cgd.7b00623
ISI #: 000407089600031
ISSN: 1528-7483
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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