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  • A facile method to prepare SnO2 nanotubes for use in efficient SnO2-TiO2 core-shell dye-sensitized solar cells.

A facile method to prepare SnO2 nanotubes for use in efficient SnO2-TiO2 core-shell dye-sensitized solar cells.

Nanoscale (2012-05-11)
Caitian Gao, Xiaodong Li, Bingan Lu, Lulu Chen, Youqing Wang, Feng Teng, Jiangtao Wang, Zhenxing Zhang, Xiaojun Pan, Erqing Xie
要旨

A high-efficiency photoelectrode for dye-sensitized solar cells (DSSCs) should combine the advantageous features of fast electron transport, slow interfacial electron recombination and large specific surface area. However, these three requirements usually cannot be achieved simultaneously in the present state-of-the-art research. Here we report a simple procedure to combine the three conflicting requirements by using porous SnO(2) nanotube-TiO(2) (SnO(2) NT-TiO(2)) core-shell structured photoanodes for DSSCs. The SnO(2) nanotubes are prepared by electrospinning of polyvinyl pyrrolidone (PVP)/tin dichloride dihydrate (SnCl(2)·2H(2)O) solution followed by direct sintering of the as-spun nanofibers. A possible evolution mechanism is proposed. The power conversion efficiency (PCE) value of the SnO(2) NT-TiO(2) core-shell structured DSSCs (∼5.11%) is above five times higher than that of SnO(2) nanotube (SnO(2) NT) DSSCs (∼0.99%). This PCE value is also higher than that of TiO(2) nanoparticles (P25) DSSCs (∼4.82%), even though the amount of dye molecules adsorbed to the SnO(2) NT-TiO(2) photoanode is less than half of that in the P25 film. This simple procedure provides a new approach to achieve the three conflicting requirements simultaneously, which has been demonstrated as a promising strategy to obtain high-efficiency DSSCs.

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Sigma-Aldrich
塩化スズ(II), reagent grade, 98%
Sigma-Aldrich
塩化スズ(II) 二水和物, ACS reagent, 98%
Sigma-Aldrich
塩化スズ(II) 二水和物, reagent grade, 98%
Sigma-Aldrich
塩化スズ(II) 二水和物, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥98%
Sigma-Aldrich
塩化スズ(II) 二水和物, ≥99.99% trace metals basis
Sigma-Aldrich
塩化スズ(II) 二水和物, ≥99.97% trace metals basis
Sigma-Aldrich
塩化スズ(II), anhydrous, powder, ≥99.99% trace metals basis
Sigma-Aldrich
塩化スズ(II), ≥99.99% trace metals basis
Supelco
塩化スズ(II) 二水和物, suitable for AAS
Sigma-Aldrich
Tin standard solution, suitable for atomic absorption spectrometry, 1000 ppm Sn, 1 mg/mL Sn
Sigma-Aldrich
塩化スズ(II) 二水和物, JIS special grade, ≥97.0%
Sigma-Aldrich
塩化スズ(II) 二水和物, suitable for determination of toxic metals, ≥96.0%
Sigma-Aldrich
塩化スズ(II) 二水和物, SAJ first grade, ≥90.0%