Fabrication and characterization of CdS-sensitized TiO2 nanotube photoelectrode
Source abstract
Abstract
CdS quantum dot (Qd)-sensitized TiO2 nanotube array photoelectrode is synthesised via a two-step method on tin-doped In2O3-coated (ITO) glass substrate. TiO2 nanotube arrays are prepared in the ethylene glycol electrolyte solution by anodizing titanium films which are deposited on ITO glass substrate by radio frequency sputtering. Then, the CdS Qds are deposited on the nanotubes by successive ionic layer adsorption and reaction technique. The resulting nanotube arrays are characterized by scanning electron microscopy, X-ray diffraction (XRD) and UV–visible absorption spectroscopy. The length of the obtained nanotubes reaches 1.60 μm and their inner diameter and wall thickness are around 90 and 20 nm, respectively. The XRD results show that the as-prepared TiO2 nanotubes array is amorphous, which are converted to anatase TiO2 after annealed at 450 °C for 2 h. The CdS Qds deposited on the TiO2 nanotubes shift the absorption edge of TiO2 from 388 to 494 nm. The results show that the CdS-sensitized TiO2 nanotubes array film can be used as the photoelectrode for solar cells.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Quantum Dots Synthesis And Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (14)
Show source-provided references
1. Albu SP, Ghicov A, Macak JM, Schmuki P (2007) 250 μm long anodic TiO2 nanotubes with hexagonal self-ordering. Phys Status Solidi (RRL) 1(2):65–67. doi: 10.1002/pssr.20060006910.1002/pssr.200600069 ↗
2. Chang CH, Lee YL (2007) Chemical bath deposition of CdS quantum dots onto mesoscopic TiO2 films for application in quantum-dot-sensitized solar cells. Appl Phys Lett 91:053503. doi: 10.1063/1.276831110.1063/1.2768311 ↗
3. Chen SG, Paulose M, Ruan CM, Mor GK, Varghese OK, Kouzoudis D, Grimes CA (2006) Electrochemically synthesized CdS nanoparticle-modified TiO2 nanotube-array photoelectrodes: preparation, characterization, and application to photoelectrochemical cells. J Photochem Photobiol A Chem 177:177–184. doi: 10.1016/j.jphotochem.2005.05.02310.1016/j.jphotochem.2005.05.023 ↗
4. Grätzel M (2004) Conversion of sunlight to electric power by nanocrystalline dye-sensitized solar cells. J Photochem Photobiol A Chem 164:3–14. doi: 10.1016/j.jphotochem.2004.08.01410.1016/j.jphotochem.2004.02.023 ↗
5. Kamat PV (2007) Meeting the clean energy demand: nanostructure architectures for solar energy conversion. J Phys Chem C 111:2834–2860. doi: 10.1021/jp066952u10.1021/jp066952u ↗
6. Kijitori Y, Ikegami M, Miyasaka Y (2007) Highly efficient plastic dye-sensitized photoelectrodes prepared by low-temperature binder-free coating of mesoscopic titania pastes. Chem Lett 36:190–191. doi: 10.1246/cl.2007.19010.1246/cl.2007.190 ↗
7. Lee YL, Lo YS (2009) Highly efficient quantum-dot-sensitized solar cell based on co-sensitization of CdS/CdSe. Adv Funct Mater 19:604–609. doi: 10.1002/adfm.20080094010.1002/adfm.200800940 ↗
8. Luo BM, Yang HB, Liu SK, Fu WY, Sun P, Yuan MX, Zhang YY, Liu ZL (2008) Fabrication and characterization of self-organized mixed oxide nanotube arrays by electrochemical anodization of Ti–6Al–4V alloy. Mater Lett 62:4512–4515. doi: 10.1016/j.matlet.2008.08.01510.1016/j.matlet.2008.08.015 ↗
9. Mor GK, Varghese OK, Paulose M, Grimes CA (2005) Transparent highly ordered TiO2 nanotube array via anodization of titanium thin tilm. Adv Funct Mater 15:1291–1296. doi: 10.1002/adfm.20020009610.1002/adfm.200500096 ↗
10. Mor GK, Varghese OK, Paulose M, Shankar K, Grimes CA (2006) A review on highly ordered, vertically oriented TiO2 nanotube arrays: fabrication, material properties, and solar energy applications. Sol Energy Mater Sol Cells 90:2011–2075. doi: 10.1016/j.solmat.2006.04.00710.1016/j.solmat.2006.04.007 ↗
11. Ong KG, Varghese OK, Mor GK, Shankar K, Grimes CA (2007) Application of finite-difference time domain to dye-sensitized solar cells: the effect of nanotube-array negative electrode dimensions on light absorption. Sol Energy Mater Sol Cells 91:250–257. doi: 10.1016/j.solmat.2006.09.00210.1016/j.solmat.2006.09.002 ↗
12. Tang YW, Hu XY, Chen MJ, Luo LJ, Li BH, Zhang LZ (2009a) CdSe nanocrystal sensitized ZnO core-shell nanorod array films: preparation and photovoltaic properties. Electrochim Acta 54:2742–2747. doi: 10.1016/j.electacta.2008.11.04710.1016/j.electacta.2008.11.047 ↗
13. Tang YX, Tao J, Zhang YY, Wu T, Tao HJ, Zhu YR (2009b) Preparation of TiO2 nanotube on glass by anodization of Ti films at room temperature. Trans Nonferous Met Soc China 19:192–198. doi: 10.1016/S1003-6326(08)60251-410.1016/S1003-6326(08)60251-4 ↗
14. Yuan S, Yu L, LYi Sh, Wu J, Fang JH, Zhao Y (2009) Highly ordered TiO2 nanotube array as recyclable catalyst for the sono-photo-catalytic degradation of methylene blue. Catal Commun 10:1188–1191. doi: 10.1016/j.catcom.2009.01.01610.1016/j.catcom.2009.01.016 ↗