Growth of Pt nanowires by atomic layer deposition on highly ordered pyrolytic graphite

Han Bo Ram Lee; Sung Hyeon Baeck; Thomas F. Jaramillo; Stacey F. Bent

doi:10.1021/nl303803p

Growth of Pt nanowires by atomic layer deposition on highly ordered pyrolytic graphite

Han Bo Ram Lee, Sung Hyeon Baeck, Thomas F. Jaramillo, Stacey F. Bent

Stanford University

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86 Scopus citations

Abstract

The formation of Pt nanowires (NWs) by atomic layer deposition on highly ordered pyrolytic graphite (HOPG) is investigated. Pt is deposited only at the step edges of HOPG and not on the basal planes, leading to the formation of laterally aligned Pt NWs. A growth model involving a morphological transition from 0-D to 1-D structures via coalescence is presented. The width of the NWs grows at a rate greater than twice the vertical growth rate. This asymmetry is ascribed to the wetting properties of Pt on HOPG as influenced by the formation of graphene oxide. A difference in Pt growth kinetics based on crystallographic orientation may also contribute.

Original language	English
Pages (from-to)	457-463
Number of pages	7
Journal	Nano Letters
Volume	13
Issue number	2
DOIs	https://doi.org/10.1021/nl303803p
State	Published - 13 Feb 2013

Keywords

Atomic layer deposition
Pt
graphene
highly ordered pyrolytic graphite
nanowires
nucleation

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10.1021/nl303803p

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title = "Growth of Pt nanowires by atomic layer deposition on highly ordered pyrolytic graphite",

abstract = "The formation of Pt nanowires (NWs) by atomic layer deposition on highly ordered pyrolytic graphite (HOPG) is investigated. Pt is deposited only at the step edges of HOPG and not on the basal planes, leading to the formation of laterally aligned Pt NWs. A growth model involving a morphological transition from 0-D to 1-D structures via coalescence is presented. The width of the NWs grows at a rate greater than twice the vertical growth rate. This asymmetry is ascribed to the wetting properties of Pt on HOPG as influenced by the formation of graphene oxide. A difference in Pt growth kinetics based on crystallographic orientation may also contribute.",

keywords = "Atomic layer deposition, Pt, graphene, highly ordered pyrolytic graphite, nanowires, nucleation",

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AU - Lee, Han Bo Ram

AU - Baeck, Sung Hyeon

AU - Jaramillo, Thomas F.

AU - Bent, Stacey F.

PY - 2013/2/13

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N2 - The formation of Pt nanowires (NWs) by atomic layer deposition on highly ordered pyrolytic graphite (HOPG) is investigated. Pt is deposited only at the step edges of HOPG and not on the basal planes, leading to the formation of laterally aligned Pt NWs. A growth model involving a morphological transition from 0-D to 1-D structures via coalescence is presented. The width of the NWs grows at a rate greater than twice the vertical growth rate. This asymmetry is ascribed to the wetting properties of Pt on HOPG as influenced by the formation of graphene oxide. A difference in Pt growth kinetics based on crystallographic orientation may also contribute.

AB - The formation of Pt nanowires (NWs) by atomic layer deposition on highly ordered pyrolytic graphite (HOPG) is investigated. Pt is deposited only at the step edges of HOPG and not on the basal planes, leading to the formation of laterally aligned Pt NWs. A growth model involving a morphological transition from 0-D to 1-D structures via coalescence is presented. The width of the NWs grows at a rate greater than twice the vertical growth rate. This asymmetry is ascribed to the wetting properties of Pt on HOPG as influenced by the formation of graphene oxide. A difference in Pt growth kinetics based on crystallographic orientation may also contribute.

KW - Atomic layer deposition

KW - Pt

KW - graphene

KW - highly ordered pyrolytic graphite

KW - nanowires

KW - nucleation

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JO - Nano Letters

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Growth of Pt nanowires by atomic layer deposition on highly ordered pyrolytic graphite

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