100-Fold Enhancement of Charge Transport in Uniaxially Oriented Mesoporous Anatase TiO2 Films

Li, Ke; Liu, Jie; Sheng, Xia; Chen, Liping; Xu, Tao; Zhu, Kai; Feng, Xinjian

doi:10.1002/chem.201704944

100-Fold Enhancement of Charge Transport in Uniaxially Oriented Mesoporous Anatase TiO₂ Films

Journal Article · Mon Dec 04 00:00:00 EST 2017 · Chemistry - A European Journal

DOI:https://doi.org/10.1002/chem.201704944· OSTI ID:1414066

Li, Ke ^[1]; Liu, Jie ^[1]; Sheng, Xia ^[1]; Chen, Liping ^[1]; Xu, Tao ^[2]; Zhu, Kai ^[3]; Feng, Xinjian ^[1]

Soochow Univ., Suzhou (China)
Northern Illinois Univ., DeKalb, IL (United States)
National Renewable Energy Lab. (NREL), Golden, CO (United States)

Mesoporous semiconductor films are of considerable interest for applications in photoelectrochemical devices, however, despite intensive research till now, their charge transport properties remain significantly lower than their single-crystal counterparts. Herein, we report a novel low-temperature template-free technique for growing high surface area mesoporous anatase TiO2 films with a preferred [001] crystalline-orientation on FTO-coated glass substrate. Compared to mesoporous films that comprised of randomly oriented crystallites, the uniaxial orientation enables a 100-fold increase in the rate of electron transport. The uniaxially oriented mesoporous anatase TiO2 films exhibit should greatly facilitate the development and application of photoelectrochemical and electrochemical devices.

View Accepted Manuscript (DOE)

Research Organization:: National Renewable Energy Lab. (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

Grant/Contract Number:: AC36-08GO28308

OSTI ID:: 1414066

Report Number(s):: NREL/JA--5900-70673

Journal Information:: Chemistry - A European Journal, Journal Name: Chemistry - A European Journal Journal Issue: 1 Vol. 24; ISSN 0947-6539

Publisher:: ChemPubSoc EuropeCopyright Statement

Country of Publication:: United States

Language:: English

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Rational Design of Photoelectrodes with Rapid Charge Transport for Photoelectrochemical Applications Sheng, Xia; Xu, Tao; Feng, Xinjian Advanced Materials, Vol. 31, Issue 11 https://doi.org/10.1002/adma.201805132	journal	January 2019

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
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semiconductors
surface area