TY - JOUR
T1 - Fabrication of thin diamond membranes by Ne+ implantation
AU - Basso, Luca
AU - Titze, Michael
AU - Henshaw, Jacob
AU - Kehayias, Pauli
AU - Cong, Rong
AU - Ziabari, Maziar Saleh
AU - Lu, Tzu Ming
AU - Lilly, Michael P.
AU - Mounce, Andrew M.
PY - 2024/3/1
Y1 - 2024/3/1
N2 - Color centers in diamond are one of the most promising tools for quantum information science. Of particular interest is the use of single-crystal diamond membranes with nanoscale-thickness as hosts for color centers. Indeed, such structures guarantee a better integration with a variety of other quantum materials or devices, which can aid the development of diamond-based quantum technologies, from nanophotonics to quantum sensing. A common approach for membrane production is what is known as “smart-cut”, a process where membranes are exfoliated from a diamond substrate after the creation of a thin sub-surface amorphous carbon layer by He+ implantation. Due to the high ion fluence required, this process can be time-consuming. In this work, we demonstrated the production of thin diamond membranes by neon implantation of diamond substrates. With the target of obtaining membranes of ∼200 nm thickness and finding the critical damage threshold, we implanted different diamonds with 300 keV Ne+ ions at different fluences. We characterized the structural properties of the implanted diamonds and the resulting membranes through SEM, Raman spectroscopy, and photoluminescence spectroscopy. We also found that a SRIM model based on a two-layer diamond/sp2-carbon target better describes ion implantation, allowing us to estimate the diamond critical damage threshold for Ne+ implantation. Compared to He+ smart-cut, the use of a heavier ion like Ne+ results in a ten-fold decrease in the ion fluence required to obtain diamond membranes and allows to obtain shallower smart-cuts, i.e. thinner membranes, at the same ion energy.
AB - Color centers in diamond are one of the most promising tools for quantum information science. Of particular interest is the use of single-crystal diamond membranes with nanoscale-thickness as hosts for color centers. Indeed, such structures guarantee a better integration with a variety of other quantum materials or devices, which can aid the development of diamond-based quantum technologies, from nanophotonics to quantum sensing. A common approach for membrane production is what is known as “smart-cut”, a process where membranes are exfoliated from a diamond substrate after the creation of a thin sub-surface amorphous carbon layer by He+ implantation. Due to the high ion fluence required, this process can be time-consuming. In this work, we demonstrated the production of thin diamond membranes by neon implantation of diamond substrates. With the target of obtaining membranes of ∼200 nm thickness and finding the critical damage threshold, we implanted different diamonds with 300 keV Ne+ ions at different fluences. We characterized the structural properties of the implanted diamonds and the resulting membranes through SEM, Raman spectroscopy, and photoluminescence spectroscopy. We also found that a SRIM model based on a two-layer diamond/sp2-carbon target better describes ion implantation, allowing us to estimate the diamond critical damage threshold for Ne+ implantation. Compared to He+ smart-cut, the use of a heavier ion like Ne+ results in a ten-fold decrease in the ion fluence required to obtain diamond membranes and allows to obtain shallower smart-cuts, i.e. thinner membranes, at the same ion energy.
UR - http://www.scopus.com/inward/record.url?scp=85183172546&partnerID=8YFLogxK
U2 - 10.1016/j.giant.2024.100238
DO - 10.1016/j.giant.2024.100238
M3 - Article
SN - 2666-5425
VL - 17
JO - Giant
JF - Giant
ER -