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Erschienen in: Journal of Materials Science: Materials in Electronics 16/2019

20.07.2019

Post-treatment of Nb2O5 compact layer in dye-sensitized solar cells for low-level lighting applications

verfasst von: Kai-Wen Chen, Li-Syuan Chen, Chih-Ming Chen

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 16/2019

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Abstract

Introduction of an ultrathin compact layer in dye-sensitized solar cells (DSSCs) can improve the cell efficiency under standard one sun illumination (> 100,000 lx). Herein, an ultrathin Nb2O5 layer is deposited on the TiO2-coated photoanode using a facial dip-coating method and its effects on the cell efficiency under a low level of light intensity (300–6000 lx) is studied. The results show that the ultrathin Nb2O5 layer helps the DSSCs to improve their power conversion efficiency (PCE) through different ways under standard one sun and low power illuminations. Under strong one sun illumination, the PCE of DSSC is improved by improving the short-circuit current density (JSC) which can be attributed to an increment of the surface area of photoanode for more dye adsorption and the blocking effect of Nb2O5. Under low power illumination, the introduction of Nb2O5 blocking layer improves the fill factor by effectively suppressing the charge recombination on the photoanode.

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Metadaten
Titel
Post-treatment of Nb2O5 compact layer in dye-sensitized solar cells for low-level lighting applications
verfasst von
Kai-Wen Chen
Li-Syuan Chen
Chih-Ming Chen
Publikationsdatum
20.07.2019
Verlag
Springer US
Erschienen in
Journal of Materials Science: Materials in Electronics / Ausgabe 16/2019
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-019-01883-z

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