TY  - JOUR
N1  - This version is the version of record. For information on re-use, please refer to the publisher?s terms and conditions.
IS  - 24
AV  - public
Y1  - 2019/06/28/
VL  - 125
TI  - Optimizing reactive ion etching to remove sub-surface polishing damage on diamond
A1  - Hicks, M-L
A1  - Pakpour-Tabrizi, AC
A1  - Zuerbig, V
A1  - Kirste, L
A1  - Nebel, C
A1  - Jackman, RB
JF  - Journal of Applied Physics
SN  - 1089-7550
PB  - AIP Publishing
UR  - https://doi.org/10.1063/1.5094751
ID  - discovery10077144
N2  - Low defect smooth substrates are essential to achieve high quality diamond epitaxial growth and high performance devices. The optimization of the Ar/O2/CF4 reactive ion etching (RIE) plasma treatment for diamond substrate smoothing and its effectiveness to remove subsurface polishing damage are characterized. An O2/CF4 RIE process and the effect of different process parameters (inductively coupled plasma, platen power, and pressure) were initially examined. This process, however, still produced a detrimental effect to surface roughness, with etch pits across the surface of the sample. The addition of argon to the process achieved near-zero surface pit density and reduced roughness by 20%?44% after 6 and 10??m etching. Iterative high-resolution X-ray diffraction measurements provided a nondestructive tool to examine the effectiveness of polishing damage removal and in this case reduced after removal of 6??m of material from the surface of the diamond substrate with the smoothing treatment.
ER  -