Article
Plasma assisted deposition of single and multistacked TiO2 hierarchical nanotubes photoanodes
Author/s | Sánchez Valencia, Juan Ramón
Idígoras León, Jesús Filippin, A. Nicolas Rojas Ruiz, Teresa Cristina Barranco Quero, Ángel Anta Montalvo, Juan Antonio Borras Martos, Ana |
Department | Universidad de Sevilla. Departamento de Química Inorgánica |
Publication Date | 2017 |
Deposit Date | 2018-03-19 |
Published in |
|
Abstract | We present herein an evolved methodology for the growth of nanocrystalline hierarchical nanotubes combining physical vapor deposition of organic nanowires (ONWs) and plasma enhanced chemical vacuum deposition of anatase ... We present herein an evolved methodology for the growth of nanocrystalline hierarchical nanotubes combining physical vapor deposition of organic nanowires (ONWs) and plasma enhanced chemical vacuum deposition of anatase TiO2 layers. The ONWs act as vacuum removable 1D and 3D templates, with the whole process occurring at temperatures ranging from RT to 250 °C. As a result, a high density of hierarchical nanotubes with tunable diameter, length and tailored wall microstructures are formed on a variety of processable substrates as metal and metal oxide films or nanoparticles including transparent conductive oxides. The reiteration of the process leads to the development of an unprecedented 3D nanoarchitecture formed by stacking the layers of hierarchical TiO2 nanotubes. As a proof of concept, we present the superior performance of the 3D nanoarchitecture as a photoanode within an excitonic solar cell with efficiencies as high as 4.69% for a nominal thickness of the anatase layer below 2.75 ¿m. Mechanical stability and straightforward implementation in devices are demonstrated at the same time. The process is extendable to other functional oxides fabricated by plasma-assisted methods with readily available applications in energy harvesting and storage, catalysis and nanosensing |
Funding agencies | Junta de Andalucía Ministerio de Economía y Competitividad (MINECO). España |
Project ID. | MAT2013-47192-C3-3-R
MAT2013-40852-R 201560E055 MAT2013-42900-P (MAT2016-79866-R |
Citation | Sánchez Valencia, J.R., Idígoras León, J., Filippin, A.N., Rojas Ruiz, T.C., Barranco Quero, Á., Anta Montalvo, J. A. y Borras Martos, A. (2017). Plasma assisted deposition of single and multistacked TiO2 hierarchical nanotubes photoanodes. Nanoscale, 9, 8133-8141. |
Files | Size | Format | View | Description |
---|---|---|---|---|
Plasma assisted deposition.pdf | 2.783Mb | [PDF] | View/ | |