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

Nanoscale
Caitian GaoErqing Xie

Abstract

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 sim...Continue Reading

References

Sep 27, 2005·Inorganic Chemistry·Michael Grätzel
Jul 21, 2006·The Journal of Physical Chemistry. B·Alex N M GreenJames R Durrant
Nov 10, 2006·The Journal of Physical Chemistry. B·Matt LawPeidong Yang
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Oct 15, 2011·Advanced Materials·Lijun Yang, Wallace Woon-Fong Leung

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Citations

May 23, 2013·ACS Applied Materials & Interfaces·Ke-Nan LiDai-Bin Kuang
Jan 23, 2014·Physical Chemistry Chemical Physics : PCCP·Ting Yang, Bingan Lu
Jan 23, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·U NithiyananthamSubrata Kundu
Nov 15, 2016·Physical Chemistry Chemical Physics : PCCP·Arnab ShitArun K Nandi
Oct 31, 2019·Nanotechnology·Junfeng WangMingdong Dong
Oct 2, 2019·Materials·Jesse Gerardo López-CovarrubiasLuis Jesús Villarreal-Gómez
Mar 19, 2019·Advances in Colloid and Interface Science·Hao-Peng FengJiang-Fang Yu

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