title: Robust and aligned carbon nanotube/titania core/shell films for flexible TCO-free photoelectrodes.
abstract: Carbon nanotube (CNT)/semiconducting oxide hybrids are an ideal architecture for light-harvesting devices, in which the CNTs are expected to not only act as a scaffold but also provide fast transport paths for photogenerated charges in the oxide. However, the current potential of CNTs for charge transport is largely suppressed due to the nanotubes not being interconnected but isolated by the low conductive oxide coatings. Herein, a flexible and conductive CNT/TiO(2)  core/shell heterostructure film is reported, with aligned and interconnected CNTs wrapped in a continuous TiO(2)  coating. Without using additional transparent conducting oxide (TCO) substrates, this unique feature of the film boosts the incident photon-to-electron conversion efficiency to 32%, outperforming TiO(2)  nanoparticle electrodes fabricated on TCO substrates. Moreover, the film shows high structural stability and can generate a stable photocurrent even after being bent hundreds of times.
authors.affiliation: Key Laboratory of Nanodevices and Applications, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou, 215123, China.
authors.forename: Jiangtao
authors.initials: J
authors.lastname: Di
authors.forename: Zhenzhong
authors.initials: Z
authors.lastname: Yong
authors.forename: Zhaojun
authors.initials: Z
authors.lastname: Yao
authors.forename: Xiangyang
authors.initials: X
authors.lastname: Liu
authors.forename: Xiaojuan
authors.initials: X
authors.lastname: Shen
authors.forename: Baoquan
authors.initials: B
authors.lastname: Sun
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Zhao
authors.forename: Huixin
authors.initials: H
authors.lastname: He
authors.forename: Qingwen
authors.initials: Q
authors.lastname: Li