C-doped TiO2 nanotubes with pulsed laser deposited Bi2O3 films for photovoltaic application
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2022
Authors
Bjelajac, AnđelikaPetrović, Rada
Stan, George E.
Socol, Gabriel
Mihailescu, Andreea
Mihailescu, Ion N.
Veltruska, Katerina
Matolin, Vladimir
Siketic, Zdravko
Provatas, George
Jaksic, Milko
Janaćković, Đorđe
Article (Published version)
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Anodization was used to obtain a nanotubular TiO2 photoanode on F-SnO2 glass. Subsequent annealing in the CH4 atmosphere promoted the C-doping and improved the crystallinity of the TiO2 nanotubes. The pulsed laser deposition was applied to cover the nanotubes with Bi2O3, serving as a hole transport material. X-ray photoelectron spectroscopy analyses of the doped samples reveal a shift in the valence band's maximum position towards lower binding energy as compared to those observed for the undoped samples (annealed in the air). The doping positively affects the absorption by shifting the absorption edge to 567 nm. I-V measurements under illumination show that the C-doping of TiO2 increases the current density following the absorbance results. The highest open circuit voltage was reached for the samples with the 300 degrees C-deposited Bi2O3 layer, pointing to better quality of the p-n junction, hence of the contact between Bi2O3 and TiO2. This in situ annealing provided the formation of... close contact between Bi2O3 and TiO2, which enabled a faster charge transport as compared to the contact obtained with no annealing or even with post annealing.
Keywords:
TiO2 / C-doping / Bi2O3 / PLDSource:
Ceramics International, 2022, 48, 4, 4649-4657Funding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200135 (University of Belgrade, Faculty of Technology and Metallurgy) (RS-200135)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200287 (Innovation Center of the Faculty of Technology and Metallurgy) (RS-200287)
- Synthesis, processing and applications of nanostructured multifunctional materials with defined properties (RS-45019)
DOI: 10.1016/j.ceramint.2021.10.251
ISSN: 0272-8842
WoS: 000743462400003
Scopus: 2-s2.0-85118558093
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Inovacioni centarTY - JOUR AU - Bjelajac, Anđelika AU - Petrović, Rada AU - Stan, George E. AU - Socol, Gabriel AU - Mihailescu, Andreea AU - Mihailescu, Ion N. AU - Veltruska, Katerina AU - Matolin, Vladimir AU - Siketic, Zdravko AU - Provatas, George AU - Jaksic, Milko AU - Janaćković, Đorđe PY - 2022 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4996 AB - Anodization was used to obtain a nanotubular TiO2 photoanode on F-SnO2 glass. Subsequent annealing in the CH4 atmosphere promoted the C-doping and improved the crystallinity of the TiO2 nanotubes. The pulsed laser deposition was applied to cover the nanotubes with Bi2O3, serving as a hole transport material. X-ray photoelectron spectroscopy analyses of the doped samples reveal a shift in the valence band's maximum position towards lower binding energy as compared to those observed for the undoped samples (annealed in the air). The doping positively affects the absorption by shifting the absorption edge to 567 nm. I-V measurements under illumination show that the C-doping of TiO2 increases the current density following the absorbance results. The highest open circuit voltage was reached for the samples with the 300 degrees C-deposited Bi2O3 layer, pointing to better quality of the p-n junction, hence of the contact between Bi2O3 and TiO2. This in situ annealing provided the formation of close contact between Bi2O3 and TiO2, which enabled a faster charge transport as compared to the contact obtained with no annealing or even with post annealing. T2 - Ceramics International T1 - C-doped TiO2 nanotubes with pulsed laser deposited Bi2O3 films for photovoltaic application EP - 4657 IS - 4 SP - 4649 VL - 48 DO - 10.1016/j.ceramint.2021.10.251 ER -
@article{ author = "Bjelajac, Anđelika and Petrović, Rada and Stan, George E. and Socol, Gabriel and Mihailescu, Andreea and Mihailescu, Ion N. and Veltruska, Katerina and Matolin, Vladimir and Siketic, Zdravko and Provatas, George and Jaksic, Milko and Janaćković, Đorđe", year = "2022", abstract = "Anodization was used to obtain a nanotubular TiO2 photoanode on F-SnO2 glass. Subsequent annealing in the CH4 atmosphere promoted the C-doping and improved the crystallinity of the TiO2 nanotubes. The pulsed laser deposition was applied to cover the nanotubes with Bi2O3, serving as a hole transport material. X-ray photoelectron spectroscopy analyses of the doped samples reveal a shift in the valence band's maximum position towards lower binding energy as compared to those observed for the undoped samples (annealed in the air). The doping positively affects the absorption by shifting the absorption edge to 567 nm. I-V measurements under illumination show that the C-doping of TiO2 increases the current density following the absorbance results. The highest open circuit voltage was reached for the samples with the 300 degrees C-deposited Bi2O3 layer, pointing to better quality of the p-n junction, hence of the contact between Bi2O3 and TiO2. This in situ annealing provided the formation of close contact between Bi2O3 and TiO2, which enabled a faster charge transport as compared to the contact obtained with no annealing or even with post annealing.", journal = "Ceramics International", title = "C-doped TiO2 nanotubes with pulsed laser deposited Bi2O3 films for photovoltaic application", pages = "4657-4649", number = "4", volume = "48", doi = "10.1016/j.ceramint.2021.10.251" }
Bjelajac, A., Petrović, R., Stan, G. E., Socol, G., Mihailescu, A., Mihailescu, I. N., Veltruska, K., Matolin, V., Siketic, Z., Provatas, G., Jaksic, M.,& Janaćković, Đ.. (2022). C-doped TiO2 nanotubes with pulsed laser deposited Bi2O3 films for photovoltaic application. in Ceramics International, 48(4), 4649-4657. https://doi.org/10.1016/j.ceramint.2021.10.251
Bjelajac A, Petrović R, Stan GE, Socol G, Mihailescu A, Mihailescu IN, Veltruska K, Matolin V, Siketic Z, Provatas G, Jaksic M, Janaćković Đ. C-doped TiO2 nanotubes with pulsed laser deposited Bi2O3 films for photovoltaic application. in Ceramics International. 2022;48(4):4649-4657. doi:10.1016/j.ceramint.2021.10.251 .
Bjelajac, Anđelika, Petrović, Rada, Stan, George E., Socol, Gabriel, Mihailescu, Andreea, Mihailescu, Ion N., Veltruska, Katerina, Matolin, Vladimir, Siketic, Zdravko, Provatas, George, Jaksic, Milko, Janaćković, Đorđe, "C-doped TiO2 nanotubes with pulsed laser deposited Bi2O3 films for photovoltaic application" in Ceramics International, 48, no. 4 (2022):4649-4657, https://doi.org/10.1016/j.ceramint.2021.10.251 . .