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100‐Fold Enhancement of Charge Transport in Uniaxially Oriented Mesoporous Anatase TiO 2 Films
Author(s) -
Li Ke,
Liu Jie,
Sheng Xia,
Chen Liping,
Xu Tao,
Zhu Kai,
Feng Xinjian
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201704944
Subject(s) - mesoporous material , anatase , materials science , crystallite , nanotechnology , semiconductor , substrate (aquarium) , chemical engineering , optoelectronics , photocatalysis , chemistry , catalysis , biochemistry , oceanography , engineering , metallurgy , geology
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 TiO 2 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 TiO 2 films exhibit should greatly facilitate the development and application of photoelectrochemical and electrochemical devices.