Carbon-doped titanum dioxide nanocrystals for highly efficient dye-sensitized solar cells

Lin, Aini; Qi, Dianyu; Ding, Hui; Wang, Lingzhi; Xing, Mingyang; Shen, Bin; Zhang, Jinlong

doi:10.1016/j.cattod.2016.06.033

Cited by 25 publications

(4 citation statements)

References 36 publications

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“…Such physico-chemical properties promote the use of TiO 2 mostly as photocatalyst and/or a catalytic support [3][4][5][6][7], although it is also used in dye sensitized solar cells [8][9][10][11] and, recently, in biomedical applications [12,13]. Moreover, the possibility of obtaining ordered porous structures with remarkable specific surface area (SSA) enhances the use of TiO 2 in…”

Section: Introductionmentioning

confidence: 99%

Pure and Fe-Doped Mesoporous Titania Catalyse the Oxidation of Acid Orange 7 by H2O2 under Different Illumination Conditions: Fe Doping Improves Photocatalytic Activity under Simulated Solar Light

et al. 2017

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A sample of mesoporous TiO 2 (MT, specific surface area = 150 m 2 ·g −1 ) and two samples of MT containing 2.5 wt.% Fe were prepared by either direct synthesis doping (Fe2.5-MTd) or impregnation (Fe2.5-MTi). Commercial TiO 2 (Degussa P25, specific surface area = 56 m 2 ·g −1 ) was used both as a benchmark and as a support for impregnation with either 0.8 or 2.5 wt.% Fe (Fe0.80-IT and Fe2.5-IT). The powders were characterized by X-ray diffraction, N 2 isotherms at −196 • C, Energy Dispersive X-ray (EDX) Spectroscopy, X-ray Photoelectron Spectroscopy (XPS), Diffuse Reflectance (DR) ultra-violet (UV)-Vis and Mössbauer spectroscopies. Degradation of Acid Orange 7 (AO7) by H 2 O 2 was the test reaction: effects of dark-conditions versus both UV and simulated solar light irradiation were considered. In dark conditions, AO7 conversion was higher with MT than with Degussa P25, whereas Fe-containing samples were active in a (slow) Fenton-like reaction. Under UV light, MT was as active as Degussa P25, and Fe doping enhanced the photocatalytic activity of Fe2.5-MTd; Fe-impregnated samples were also active, likely due to the occurrence of a photo-Fenton process. Interestingly, the Fe2.5-MTd sample showed the best performance under solar light, confirming the positive effect of Fe doping by direct synthesis with respect to impregnation.

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Section: Introductionmentioning

confidence: 99%

Pure and Fe-Doped Mesoporous Titania Catalyse the Oxidation of Acid Orange 7 by H2O2 under Different Illumination Conditions: Fe Doping Improves Photocatalytic Activity under Simulated Solar Light

et al. 2017

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“…This may be due to broader absorbance range [22]. Moreover, TiO2 doping with activated carbon also can help to narrow band gap energy and facilitate the separation of photogenerated charge carriers, resulting in its enhanced efficiency [23][24][25][26].…”

Section: Photovoltaic Efficiencymentioning

confidence: 99%

Development of activated carbon-doped TiO₂ nanoparticle thin film for application in dye-sensitized solar cells

lunphut

2022

J. Phys.: Conf. Ser.

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Carbon This research aims to study the preparation of activated carbon-doped TiO2 nanoparticle thin films with basellaceae, malvaceae and hylocereus dyes for application in dye-sensitized solar cells (DSSCs). The physical and chemical properties of as-prepared thin films were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-vis diffuse reflectance spectra (UV-vis DRS) techniques. Results revealed that the basellaceae dye (JSC is 13.5 mA/cm2, VOC is 0.450 V and η (%) is 1.59) on thin film showed the highest efficiency compared with the malvaceae (JSC is 10.2 mA/cm2, VOC is 0.425 V and η (%) is 1.08) and hylocereus (JSC is 12.1 mA/cm2, VOC is 0.325 V and η (%) is 1.17) dyes. Moreover, we observed that activated carbon/TiO2 nanoparticle thin film exhibited a higher efficiency than other thin film samples. This might be due to the activated carbon doped into the TiO2 leading to facilitate the separation of photogenerated charge carriers, resulting in its enhanced efficiency.

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“…The nanostructure TiO 2 was synthesized through various routes, namely, sol-gel [24][25][26][27], hydrothermal [28][29][30][31], solvothermal [32][33][34][35], co-precipitation [36,37], polyol synthesis [38,39], and so forth. Amongst the reported methods, sol-gel has been the most explored and preferred method due to low-temperature processing procedures, ease of controlling the reaction parameters, and high homogeneity [40].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Charge Transport of a Dye-Sensitized Solar Cell Utilizing TiO2 Quantum Dot Photoelectrode Film

et al. 2021

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A dye-sensitized solar cell (DSC) is the third generation of solar technology, utilizing TiO2 nanoparticles with sizes of 20–30 nm as the photoelectrode material. The integration of smaller nanoparticles has the advantage of providing a larger surface area, yet the presence of grain boundaries is inevitable, resulting in a higher probability of electron trapping. This study reports on the improvement of charge transport through the integration of quantum dot (QD) TiO2 with a size of less than 10 nm as the dye absorption photoelectrode layer. The QD TiO2 samples were synthesized through sol–gel and reflux methods in a controlled pH solution without surfactants. The synthesized samples were analyzed using microscopic, diffraction, absorption, as well as spectroscopic analyses. A current–voltage and impedance analysis was used to evaluate the performance of a DSC integrated with synthesized TiO2 as the photoelectrode material. The sample with smaller crystallite structures led to a large surface area and exhibited a higher dye absorption capability. Interestingly, a DSC integrated with QD TiO2 showed a higher steady-state electron density and a lower electron recombination rate. The shallow distribution of the trap state led to an improvement of the electron trapping/de-trapping process between the Fermi level and the conduction band of oxide photoelectrode material, hence improving the lifetime of generated electrons and the overall performance of the DSC.

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Carbon-doped titanum dioxide nanocrystals for highly efficient dye-sensitized solar cells

Cited by 25 publications

References 36 publications

Pure and Fe-Doped Mesoporous Titania Catalyse the Oxidation of Acid Orange 7 by H2O2 under Different Illumination Conditions: Fe Doping Improves Photocatalytic Activity under Simulated Solar Light

Pure and Fe-Doped Mesoporous Titania Catalyse the Oxidation of Acid Orange 7 by H2O2 under Different Illumination Conditions: Fe Doping Improves Photocatalytic Activity under Simulated Solar Light

Development of activated carbon-doped TiO₂ nanoparticle thin film for application in dye-sensitized solar cells

Enhancement of Charge Transport of a Dye-Sensitized Solar Cell Utilizing TiO2 Quantum Dot Photoelectrode Film

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Carbon-doped titanum dioxide nanocrystals for highly efficient dye-sensitized solar cells

Cited by 25 publications

References 36 publications

Pure and Fe-Doped Mesoporous Titania Catalyse the Oxidation of Acid Orange 7 by H2O2 under Different Illumination Conditions: Fe Doping Improves Photocatalytic Activity under Simulated Solar Light

Pure and Fe-Doped Mesoporous Titania Catalyse the Oxidation of Acid Orange 7 by H2O2 under Different Illumination Conditions: Fe Doping Improves Photocatalytic Activity under Simulated Solar Light

Development of activated carbon-doped TiO2 nanoparticle thin film for application in dye-sensitized solar cells

Enhancement of Charge Transport of a Dye-Sensitized Solar Cell Utilizing TiO2 Quantum Dot Photoelectrode Film

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Development of activated carbon-doped TiO₂ nanoparticle thin film for application in dye-sensitized solar cells