Robust and Aligned Carbon Nanotube/Titania Core/Shell Films for Flexible TCO‐Free Photoelectrodes |
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| Authors: | Jiangtao Di Zhenzhong Yong Zhaojun Yao Xiangyang Liu Xiaojuan Shen Baoquan Sun Zhigang Zhao Huixin He Qingwen Li |
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| Affiliation: | 1. Key Laboratory of Nanodevices and Applications, Suzhou Institute of Nano‐tech and Nano‐bionics, Chinese Academy of Sciences, Suzhou, 215123, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. Soochow University, Suzhou, 215123, China;4. Department of Chemistry, Rutgers University, Newark, New Jersey 07102, USA |
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| 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/TiO2 core/shell heterostructure film is reported, with aligned and interconnected CNTs wrapped in a continuous TiO2 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 TiO2 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. |
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| Keywords: | photoelectrochemical cells water splitting carbon nanotubes titanium dioxide solar cells |
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