Enhanced photovoltaic properties of dye-sensitized solar cells using three-component CNF/TiO2/Au heterostructure

Lu, Dongxiao; Li, Jinhua; Lü, Guang-Hong; Qin, Longgui; Liu, Deye; Sun, Peng; Liu, Fengmin; Lu, Geyu

doi:10.1016/j.jcis.2019.02.005

Cited by 11 publications

(3 citation statements)

References 51 publications

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“…Lanthanide‐doped upconversion nanoparticles (UCNPs) and/or noble metal nanoparticles (NMs) have been intensively investigated and applied as a light‐trapping strategy to increase the light absorption and thereby to improve the efficiency of the DSSCs [18–32] . The UCNPs can absorb near‐infrared (NIR) light and re‐emit the visible light because of the UC effect, thus indirectly broadening the absorption range of dye molecules including N719 [33, 34] .…”

Section: Introductionmentioning

confidence: 99%

“…Lanthanide-doped upconversion nanoparticles (UCNPs) and/or noble metal nanoparticles (NMs) have been intensively investigated and applied as a light-trapping strategy to increase the light absorption and thereby to improve the efficiency of the DSSCs. [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] The UCNPs can absorb nearinfrared (NIR) light and re-emit the visible light because of the UC effect, thus indirectly broadening the absorption range of dye molecules including N719. [33,34] The NMs such as Au and Ag can be viewed as light harvesting components by means of the surface plasmon resonance (SPR) effect in the visible region of the spectrum, and more impressively, the coupling of SPR with the adsorbed dyes will result in an augment in the effective absorption cross-section of the dye molecules.…”

Section: Introductionmentioning

confidence: 99%

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Boosting the Efficiency of Dye‐Sensitized Solar Cells by a Multifunctional Composite Photoanode to 14.13 %

et al. 2023

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We report a new strategy to fabricate a multifunctional composite photoanode containing TiO2 hollow spheres (TiO2‐HSs), Au nanoparticles (AuNPs) and novel NaYF4 : Yb,Er@NaLuF4 : Eu@SiO2 upconversion nanoparticles (UCNPs). The AuNPs are grown on the photoanode film including TiO2‐HSs and UCNPs by a simple in situ plasmonic treatment. As a result, an impressive power conversion efficiency of 14.13 % is obtained, which is a record for N719 dye‐based dye‐sensitized solar cells, demonstrating great potential for the solar cells toward commercialization. This obvious enhancement is ascribed to a collaborative mechanism of the TiO2‐HSs exhibiting excellent light‐scattering ability, of the UCNPs converting near‐infrared photons into visible photons and of the AuNPs presenting outstanding surface plasmon resonance effect. Notably, a steady‐state experiment further reveals that the champion cell exhibits 95.33 % retainment in efficiency even after 180 h of measurements, showing good device stability.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Boosting the Efficiency of Dye‐Sensitized Solar Cells by a Multifunctional Composite Photoanode to 14.13 %

et al. 2023

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“…Thus, the surface heterojunction may provide a novel technique for building highly effective photocatalysts, which merits further research. For instance, noble metals (Pt, Au, Ag, Cu) that induce plasmons can act as excellent electron mediators when deposited on the surface of semiconductor heterostructures, promoting charge carrier transfer due to its localized surface plasmon resonance (LSPR) ( Lu et al, 2019 ; Wang and Kowalska, 2022 ). The metal-free graphitic carbon nitride (g-C 3 N 4 ) proved to be stable, non-toxic, and easy to prepare 2D material, that can effectively activate molecular oxygen and generate superoxide free radicals for photocatalytic degradation of organic pollutants ( Zhao et al, 2018 ; Yang et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Semiconductor-metal-semiconductor TiO2@Au/g-C3N4 interfacial heterojunction for high performance Z-scheme photocatalyst

Hong

Anwer²,

Wu³

et al. 2022

Front. Chem.

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We designed an edge-sites 2D/0D/2D based TiO2@Au/g-C3N4 Z-scheme photocatalytic system consists of highly exposed (001) TNSs@Au edge-site heterojunction, and the Au/g-C3N4 interfacial heterojunction. The designed photocatalyst was prepared by a facile and controlled hydrothermal synthesis strategy via in-situ nanoclusters-to-nanoparticles deposition technique and programable calcination in N2 atmosphere to get edge-site well-crystalline interface, followed by chemically bonded thin overlay of g-C3N4. Photocatalytic performance of the prepared TNSs@Au/g-C3N4 catalyst was evaluated by the photocatalytic degradation of organic pollutants in water under visible light irradiation. The results obtained from structural and chemical characterization conclude that the inter-facet junction between highly exposed (001) and (101) TNSs surface, and TNSs@Au interfacial heterojunction formed by a direct contact between highly crystalline TNSs and Au, are the key factors to enhance the separation efficiency of photogenerated electrons/holes. On coupling with overlay of g-C3N4 2D NSs synergistically offer tremendous reactive sites for the potential photocatalytic dye degradation in the Z-scheme photocatalyst. Particularly in the designed photocatalyst, Au nanoparticles accumulates and transfer the photo-stimulated electrons originated from anatase TNSs to g-C3N4via semiconductor-metal heterojunction. Because of the large exposed reactive 2D surface, overlay g-C3N4 sheets not only trap photoelectrons, but also provide a potential platform for increased adsorption capacities for organic contaminants. This work establishes a foundation for the development of high-performance Z-scheme photocatalytic systems.

show abstract

Boosting the Efficiency of Dye‐Sensitized Solar Cells by a Multifunctional Composite Photoanode to 14.13 %

et al. 2023

View full text Add to dashboard Cite

We report a new strategy to fabricate a multifunctional composite photoanode containing TiO 2 hollow spheres (TiO 2 -HSs), Au nanoparticles (AuNPs) and novel NaYF 4 : Yb,Er@NaLuF 4 : Eu@SiO 2 upconversion nanoparticles (UCNPs). The AuNPs are grown on the photoanode film including TiO 2 -HSs and UCNPs by a simple in situ plasmonic treatment. As a result, an impressive power conversion efficiency of 14.13 % is obtained, which is a record for N719 dye-based dyesensitized solar cells, demonstrating great potential for the solar cells toward commercialization. This obvious enhancement is ascribed to a collaborative mechanism of the TiO 2 -HSs exhibiting excellent light-scattering ability, of the UCNPs converting near-infrared photons into visible photons and of the AuNPs presenting outstanding surface plasmon resonance effect. Notably, a steady-state experiment further reveals that the champion cell exhibits 95.33 % retainment in efficiency even after 180 h of measurements, showing good device stability.

show abstract

Enhanced photovoltaic properties of dye-sensitized solar cells using three-component CNF/TiO2/Au heterostructure

Cited by 11 publications

References 51 publications

Boosting the Efficiency of Dye‐Sensitized Solar Cells by a Multifunctional Composite Photoanode to 14.13 %

Boosting the Efficiency of Dye‐Sensitized Solar Cells by a Multifunctional Composite Photoanode to 14.13 %

Semiconductor-metal-semiconductor TiO2@Au/g-C3N4 interfacial heterojunction for high performance Z-scheme photocatalyst

Boosting the Efficiency of Dye‐Sensitized Solar Cells by a Multifunctional Composite Photoanode to 14.13 %

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