Site-specific growth of oriented ZnO nanocrystal arrays

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Site-specific growth of oriented ZnO nanocrystal arrays. / Bai, Rekha; Pandya, Dinesh; Chaudhary, Sujeet; Dhaka, Veer; Khayrudinov, Vladislav; Lemettinen, Jori; Kauppinen, Christoffer; Lipsanen, Harri.

In: Beilstein Journal of Nanotechnology, Vol. 9, No. 1, 01.01.2019, p. 274-280.

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@article{3c722f288fcf4b339b621468d5eb186c,
title = "Site-specific growth of oriented ZnO nanocrystal arrays",
abstract = "We report on the growth of ZnO nanocrystals having a hexagonal, prismatic shape, sized 700 nm × 600 nm, on bare indium tin oxide (ITO) substrates. The growth is induced by a low ion flux and involves a low-temperature electrodeposition technique. Further, vertically aligned periodic nanocrystal (NC) growth is engineered at predefined positions on polymer-coated ITO substrates patterned with ordered pores. The vertical alignment of ZnO NCs along the c-axis is achieved via ion-by-ion nucleation-controlled growth for patterned pores of size ≈600 nm; however, many-coupled branched NCs with hexagonal shape are formed when a patterned pore size of ≈200 nm is used. X-ray diffraction data is in agreement with the observed morphology. A mechanism is proposed to interpret the observed site-specific oriented/branched growth that is correlated to the pore size. As ordered NC arrays have the potential to generate new collective properties different from single NCs, our first demonstration of a cost effective and facile fabrication process opens up new possibilities for devices with versatile functionalities.",
keywords = "electrodeposition, growth kinetics, nanocrystals, nucleation, twinning, zinc oxide",
author = "Rekha Bai and Dinesh Pandya and Sujeet Chaudhary and Veer Dhaka and Vladislav Khayrudinov and Jori Lemettinen and Christoffer Kauppinen and Harri Lipsanen",
year = "2019",
month = "1",
day = "1",
doi = "10.3762/bjnano.10.26",
language = "English",
volume = "9",
pages = "274--280",
journal = "Beilstein Journal of Nanotechnology",
issn = "2190-4286",
publisher = "Beilstein-Institut Zur Forderung der Chemischen Wissenschaften",
number = "1",

}

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TY - JOUR

T1 - Site-specific growth of oriented ZnO nanocrystal arrays

AU - Bai, Rekha

AU - Pandya, Dinesh

AU - Chaudhary, Sujeet

AU - Dhaka, Veer

AU - Khayrudinov, Vladislav

AU - Lemettinen, Jori

AU - Kauppinen, Christoffer

AU - Lipsanen, Harri

PY - 2019/1/1

Y1 - 2019/1/1

N2 - We report on the growth of ZnO nanocrystals having a hexagonal, prismatic shape, sized 700 nm × 600 nm, on bare indium tin oxide (ITO) substrates. The growth is induced by a low ion flux and involves a low-temperature electrodeposition technique. Further, vertically aligned periodic nanocrystal (NC) growth is engineered at predefined positions on polymer-coated ITO substrates patterned with ordered pores. The vertical alignment of ZnO NCs along the c-axis is achieved via ion-by-ion nucleation-controlled growth for patterned pores of size ≈600 nm; however, many-coupled branched NCs with hexagonal shape are formed when a patterned pore size of ≈200 nm is used. X-ray diffraction data is in agreement with the observed morphology. A mechanism is proposed to interpret the observed site-specific oriented/branched growth that is correlated to the pore size. As ordered NC arrays have the potential to generate new collective properties different from single NCs, our first demonstration of a cost effective and facile fabrication process opens up new possibilities for devices with versatile functionalities.

AB - We report on the growth of ZnO nanocrystals having a hexagonal, prismatic shape, sized 700 nm × 600 nm, on bare indium tin oxide (ITO) substrates. The growth is induced by a low ion flux and involves a low-temperature electrodeposition technique. Further, vertically aligned periodic nanocrystal (NC) growth is engineered at predefined positions on polymer-coated ITO substrates patterned with ordered pores. The vertical alignment of ZnO NCs along the c-axis is achieved via ion-by-ion nucleation-controlled growth for patterned pores of size ≈600 nm; however, many-coupled branched NCs with hexagonal shape are formed when a patterned pore size of ≈200 nm is used. X-ray diffraction data is in agreement with the observed morphology. A mechanism is proposed to interpret the observed site-specific oriented/branched growth that is correlated to the pore size. As ordered NC arrays have the potential to generate new collective properties different from single NCs, our first demonstration of a cost effective and facile fabrication process opens up new possibilities for devices with versatile functionalities.

KW - electrodeposition

KW - growth kinetics

KW - nanocrystals

KW - nucleation

KW - twinning

KW - zinc oxide

UR - http://www.scopus.com/inward/record.url?scp=85061149313&partnerID=8YFLogxK

U2 - 10.3762/bjnano.10.26

DO - 10.3762/bjnano.10.26

M3 - Article

VL - 9

SP - 274

EP - 280

JO - Beilstein Journal of Nanotechnology

JF - Beilstein Journal of Nanotechnology

SN - 2190-4286

IS - 1

ER -

ID: 31520248