Research output: Contribution to journal › Article › peer-review
Groups of Ge nanoislands grown outside pits on pit-patterned Si substrates. / Rudin, S. A.; Zinovyev, V. A.; Smagina, Zh V. et al.
In: Journal of Crystal Growth, Vol. 593, 126763, 01.09.2022.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Groups of Ge nanoislands grown outside pits on pit-patterned Si substrates
AU - Rudin, S. A.
AU - Zinovyev, V. A.
AU - Smagina, Zh V.
AU - Novikov, P. L.
AU - Nenashev, A. V.
AU - Pavsky, K. V.
N1 - Funding Information: We gratefully acknowledge financial support of this work by the RSF (Grant 21-72-20184). Authors thank the NSU Multiple-access Center “VTAN” and ISP SB RAS Multiple-access Center “Nano-structures” for the provision of measurement equipment. We would also like to thank E.E. Rodyakina for SEM analysis and Vl. A. Armbrister for growth experiments. Publisher Copyright: © 2022 Elsevier B.V.
PY - 2022/9/1
Y1 - 2022/9/1
N2 - Ordered arrays of Ge quantum dot groups (QDs) were grown on pit-patterned silicon-on-insulator (SOI) substrates with deep pits, prepared by electron beam lithography (EBL) and plasma-chemical etching (PCE). Experiments were carried out for the square and hexagonal pit lattices with the lattice period varied. The QDs were found to be sited at the periphery of pits. It was demonstrated that for both pit lattice types the number of QDs per pit can be controlled by varying the period of the pit lattice. The Monte Carlo (MC) simulations of QDs growth on pit-patterned Si substrates were carried out, using the model, which takes strain into account. The island patterning depending on the inter-pit distance is interpreted as the result of competition between stress-driven QD nucleation and Ge migration downward into the pits, which serve as the sinks for Ge atoms.
AB - Ordered arrays of Ge quantum dot groups (QDs) were grown on pit-patterned silicon-on-insulator (SOI) substrates with deep pits, prepared by electron beam lithography (EBL) and plasma-chemical etching (PCE). Experiments were carried out for the square and hexagonal pit lattices with the lattice period varied. The QDs were found to be sited at the periphery of pits. It was demonstrated that for both pit lattice types the number of QDs per pit can be controlled by varying the period of the pit lattice. The Monte Carlo (MC) simulations of QDs growth on pit-patterned Si substrates were carried out, using the model, which takes strain into account. The island patterning depending on the inter-pit distance is interpreted as the result of competition between stress-driven QD nucleation and Ge migration downward into the pits, which serve as the sinks for Ge atoms.
KW - A1. Monte-Carlo simulation
KW - A1. Spatial ordering
KW - A3. Ge(Si) islands
KW - A3. Pre-patterned substrate
KW - A3. Quantum dots
UR - http://www.scopus.com/inward/record.url?scp=85132726132&partnerID=8YFLogxK
U2 - 10.1016/j.jcrysgro.2022.126763
DO - 10.1016/j.jcrysgro.2022.126763
M3 - Article
AN - SCOPUS:85132726132
VL - 593
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
SN - 0022-0248
M1 - 126763
ER -
ID: 36481814