Influence of seeding and bath conditions in hydrothermal growth of very thin (∼20 nm) single-crystalline rutile TiO2 nanorod films

Seare A. Berhe; Soumya Nag; Zachary Molinets; W. Justin Youngblood

doi:10.1021/am302315q

Influence of seeding and bath conditions in hydrothermal growth of very thin (∼20 nm) single-crystalline rutile TiO₂ nanorod films

Seare A. Berhe, Soumya Nag, Zachary Molinets, W. Justin Youngblood

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

New seeding conditions have been examined for the hydrothermal growth of single-crystalline rutile TiO₂ nanorods. Rutile nanorods of ∼20 nm diameter are grown from seed layers consisting of either (A) TiO₂ or MnOOH nanocrystals deposited from suspension, or (B) a continuous sheet of TiO₂. These seed layers are more effective for seeding the growth of rutile nanorods compared to the use of bare F-SnO₂ substrates. The TiO₂ sheet seeding allows lower concentration of titanium alkoxide precursor relative to previously reported procedures, but fusion of the resulting TiO₂ nanorods into bundles occurs at higher precursor concentration and/or longer growth duration. Performance of polymer-oxide solar cells prepared using these nanorods shows a dependence on the extent of bundling as well as rod height.

Original language	English
Pages (from-to)	1181-1185
Number of pages	5
Journal	ACS Applied Materials and Interfaces
Volume	5
Issue number	4
DOIs	https://doi.org/10.1021/am302315q
State	Published - Feb 27 2013
Externally published	Yes

Keywords

cell
control
growth
hydrothermal
morphology
oxide
polymer
rutile
single-crystalline
solar

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Access to Document

10.1021/am302315q

Cite this

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title = "Influence of seeding and bath conditions in hydrothermal growth of very thin (∼20 nm) single-crystalline rutile TiO2 nanorod films",

abstract = "New seeding conditions have been examined for the hydrothermal growth of single-crystalline rutile TiO2 nanorods. Rutile nanorods of ∼20 nm diameter are grown from seed layers consisting of either (A) TiO2 or MnOOH nanocrystals deposited from suspension, or (B) a continuous sheet of TiO2. These seed layers are more effective for seeding the growth of rutile nanorods compared to the use of bare F-SnO2 substrates. The TiO2 sheet seeding allows lower concentration of titanium alkoxide precursor relative to previously reported procedures, but fusion of the resulting TiO2 nanorods into bundles occurs at higher precursor concentration and/or longer growth duration. Performance of polymer-oxide solar cells prepared using these nanorods shows a dependence on the extent of bundling as well as rod height.",

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T1 - Influence of seeding and bath conditions in hydrothermal growth of very thin (∼20 nm) single-crystalline rutile TiO2 nanorod films

AU - Berhe, Seare A.

AU - Nag, Soumya

AU - Molinets, Zachary

AU - Youngblood, W. Justin

PY - 2013/2/27

Y1 - 2013/2/27

N2 - New seeding conditions have been examined for the hydrothermal growth of single-crystalline rutile TiO2 nanorods. Rutile nanorods of ∼20 nm diameter are grown from seed layers consisting of either (A) TiO2 or MnOOH nanocrystals deposited from suspension, or (B) a continuous sheet of TiO2. These seed layers are more effective for seeding the growth of rutile nanorods compared to the use of bare F-SnO2 substrates. The TiO2 sheet seeding allows lower concentration of titanium alkoxide precursor relative to previously reported procedures, but fusion of the resulting TiO2 nanorods into bundles occurs at higher precursor concentration and/or longer growth duration. Performance of polymer-oxide solar cells prepared using these nanorods shows a dependence on the extent of bundling as well as rod height.

AB - New seeding conditions have been examined for the hydrothermal growth of single-crystalline rutile TiO2 nanorods. Rutile nanorods of ∼20 nm diameter are grown from seed layers consisting of either (A) TiO2 or MnOOH nanocrystals deposited from suspension, or (B) a continuous sheet of TiO2. These seed layers are more effective for seeding the growth of rutile nanorods compared to the use of bare F-SnO2 substrates. The TiO2 sheet seeding allows lower concentration of titanium alkoxide precursor relative to previously reported procedures, but fusion of the resulting TiO2 nanorods into bundles occurs at higher precursor concentration and/or longer growth duration. Performance of polymer-oxide solar cells prepared using these nanorods shows a dependence on the extent of bundling as well as rod height.

KW - cell

KW - control

KW - growth

KW - hydrothermal

KW - morphology

KW - oxide

KW - polymer

KW - rutile

KW - single-crystalline

KW - solar

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