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Work function engineering of SnO single crystal microplates with thermal annealing

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Title
Work function engineering of SnO single crystal microplates with thermal annealing
Author(s)
Won Hui Doh; Wooseok Jeong; Hyunsoo Lee; Park J.; Jeong Young Park
Publication Date
2016-08
Journal
NANOTECHNOLOGY, v.27, no.33, pp.335603 -
Publisher
IOP PUBLISHING LTD
Abstract
We synthesized black SnO single-crystal microplates via a sonochemical process and engineered the work function of the SnO microplates using thermal treatments. The as-synthesized SnO microplates have a wide (001) plane, as is clearly evident from TEM images and diffraction patterns. Surface potential measurements on the SnO microplates show that the work function changes as the annealing temperature increases. The TEM and XAS results after thermal treatments imply that the micro-sized SnO(001) single-crystals are stable up to about 400 °C in air, after which the surface starts to become locally oxidized. Consequently, the long-range ordering and lattice parameter of the SnO(001) single crystals started to change to make polycrystalline SnO2 at about 600 °C. These results demonstrate the ability to tune the work function of the microplates and suggest an intriguing way to engineer the electrical properties of nanostructures. © 2016 IOP Publishing Ltd
URI
https://pr.ibs.re.kr/handle/8788114/3130
ISSN
0957-4484
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
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