An upconversion NaYF4:Yb3+,Er3+/TiO2 core–shell nanoparticle photoelectrode for improved efficiencies of dye-sensitized solar cells

Zhang, Jun; Shen, Haiou; Guo, Wei; Wang, Shunhao; Zhu, Chenfeng; Xue, Fei; Hou, Jinfeng; Su, Hongbo; Yuan, Zhiwen

doi:10.1016/j.jpowsour.2012.10.073

Cited by 92 publications

(42 citation statements)

References 34 publications

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“…The capability of harvesting solar photons considerably determines the performance of the photovoltaic cells [10]. The devices comprising the silicon cells, the dye-sensitized cells, the polymer-PCBM and the polymer-nanocrystals heterojunction solar cells, encounter with spectral mismatch [12][13][14][15], thereby leading to loss of energy. The upconversion materials which possess the optical property of converting long-wavelength photons into shorter ones [16][17][18], gives rise to a promising method to harvest the solar energy.…”

Section: Introductionmentioning

confidence: 99%

“…-doped NaYF 4 upconversion nanoparticles, Shalave et al [12] have successfully broadened light-harvesting of a silicon solar cell. Lanthanide-doped NaYF 4 nanoparticles with core-shell structure have evidently enhanced the overall performance of a dye-sensitized solar cell [13]. Also, the researches which focus on the application of UCNP in the polymer-PCBM solar cells have been carried out [14,15].…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of polythiophene–TiO2 heterojunction solar cells coupled with upconversion nanoparticles

Zhang

2014

J Mater Sci: Mater Electron

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We introduce lanthanide-doped LiYF 4 upconversion nanoparticles into TiO 2 film and use the obtained composite film to photocatalyze the polymerization of thiophene, developing a polythiophene-TiO 2 heterojunction coupled with upconversion nanoparticles. The upconversion nanoparticles, which are capable of converting long-wavelength photons into shorter ones, aim to broaden the light-harvesting of the heterojunction films. Solar cells are fabricated from the heterojunction films coupled with different contents of upconversion nanoparticles, and measured in respect to the incident photon-electron conversion efficiencies and the current density-voltage curves. It is revealed that the upconversion nanoparticles enable the devices to utilize the long-wavelength photons, and thus, the photovoltaic performances are enhanced. Moreover, by employing Raman spectroscopy, we monitor the process of polymerization on the TiO 2 substrate and put deep insight into the interfacial interaction of the heterojunction.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fabrication of polythiophene–TiO2 heterojunction solar cells coupled with upconversion nanoparticles

Zhang

2014

J Mater Sci: Mater Electron

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“…Combining UC materials and metal oxide semiconductors represents an interesting approach to photosensitize the semiconductors in the NIR region of the solar spectrum, since the photons absorbed by the UC material can, after upconversion, be harvested by the semiconductor to eventually generate a photocurrent [56,86,87,88,89,57,90].…”

Section: Introductionmentioning

confidence: 99%

Towards near-infrared photosensitization of tungsten trioxide nanostructured films by upconverting nanoparticles

et al. 2015

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“…[5] Of the reported UC luminescence nanocrystals, sodium yttrium fluoride (NaYF 4 ), with low vibration energies (< 400 cm À1 ), low nonradiative decay rates, sharp absorption and emission lines, and high radiative emission rates, has been reported as one of the most efficient lanthanide (Ln)-doped UC host material.…”

Section: Introductionmentioning

confidence: 99%

Controllable Multicolor Upconversion Luminescence by Tuning the NaF Dosage

Wang

2013

Chemistry An Asian Journal

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Multicolor upconversion (UC) luminescence of NaYF4:Yb(3+)/Er(3+) nanoparticles (NPs) was successfully tuned by simply controlling the NaF dosage. Unlike UC nanocrystals previously reported in the literature with multicolor emission obtained by varying the rare-earth dopants, the current work developed a new approach to tune the UC emission color by controlling the NaF concentration without changing the ratio and dosage of rare-earth ions. TEM and powder XRD were used to characterize the shape, size, and composition of the UC luminescent nanocrystals. The luminescence images, emission spectra, and multicolor emission mechanism of the NPs have also been demonstrated. As a result of the excellent ability of this new method to manipulate color emission, this will open up new avenues in the areas of bioprobes, light-emitting devices, color displays, lasers, and so forth. To demonstrate their biological applications, the water-stable, biocompatible, and bioconjugatable NaYF4:Yb(3+)/Er(3+) @poly(acrylic acid) NPs were synthesized by this developed strategy and applied in targeted-cell UC luminescence imaging.

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An upconversion NaYF4:Yb3+,Er3+/TiO2 core–shell nanoparticle photoelectrode for improved efficiencies of dye-sensitized solar cells

Cited by 92 publications

References 34 publications

Fabrication of polythiophene–TiO2 heterojunction solar cells coupled with upconversion nanoparticles

Fabrication of polythiophene–TiO2 heterojunction solar cells coupled with upconversion nanoparticles

Towards near-infrared photosensitization of tungsten trioxide nanostructured films by upconverting nanoparticles

Controllable Multicolor Upconversion Luminescence by Tuning the NaF Dosage

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