中文

Journal of Shanghai University >

2020 , Vol. 26 >Issue 4: 544 - 551

DOI: https://doi.org/10.12066/j.issn.1007-2861.2087

Synthesis and photoelectrical properties of hierarchical-structured anatase TiO2 nanoflowers

Expand
  • School of Materials Science and Engineering, Shanghai University, Shanghai 200444

Received date: 2018-05-17

  Online published: 2018-12-23

Fold

Abstract

Oxide semiconductor nanomaterials are used as aonde materials for dye- sensitized solar cells (DSSCs). One-dimensional nanostructures have enhanced electron collection of carriers and superior charge transport compared to spherical nanoparticles. However, they suffer from low dye-loading caused by small surface areas and unfavorable arrangement for a photo-generated electron extraction. Anatase TiO2  nanorods-based nanoflowers have been successfully synthesized using a simple one-step hydrothermal method. Such hierarchical nanostructures can be controlled by reaction time. The dye absorption capacities of the as-obtained hierarchical nanostructures increase with the reaction time. The highest cell efficiency (7.29%) of the DSSC is achieved through the TiO2  nanoflowers prepared for 70 h.

Key words： TiO2 ; nanoflowers; dye-sensitized solar cells; anode

Cite this article

YANG Huang, LI Yi, WANG Rui, YANG Weiguang . Synthesis and photoelectrical properties of hierarchical-structured anatase TiO2 nanoflowers[J]. Journal of Shanghai University, 2020 , 26(4) : 544 -551 . DOI: 10.12066/j.issn.1007-2861.2087

References

[1] Zhang Q F, Cao G Z. Nanostructured photoelectrodes for dye-sensitized solar cells[J]. Nano Today, 2011,6(1):91-109.
[2] Sun H, Zhang Y, Zhang J, et al. Energy harvesting and storage in 1D devices[J]. Nat Rev Mater, 2017,2:17023.
[3] Freitag M, Teuscher J, Saygili Y, et al. Dye-sensitized solar cells for efficient power generation under ambient lighting[J]. Nat Photon, 2017,11:372-378.
[4] Galliano S, F. Bella, C. Gerbaldi, et al. Photoanode/electrolyte interface stability in aqueous dye-sensitized solar cells[J]. Energy Technol, 2016,5(2):300-311.
[5] Roy P, Berger S, Schmuki P. TiO$_{2}$ nanotubes: synjournal and applications[J]. Angew Chem Int Ed, 2011,50:2904-2939.
[6] Tang Y B, Lee C S, Xu J, et al. Incorporation of graphenes in nanostructured TiO$_2$ films via molecular grafting for dye-sensitized solar cell application[J]. ACS Nano, 2010,4(6):3482-3488.
[7] Tian J, Zhao Z, Kumar A, et al. Recent progress in design, synjournal, and applications of one-dimensional TiO$_{2}$ nanostructured surface heterostructures: a review[J]. Chem Soc Rev, 2014,43:6920-6937.
[8] Liao J Y, Lei B X, Chen H Y, et al. Oriented hierarchical single crystalline anatase TiO$_{2}$ nanowire arrays on Ti-foil substrate for efficient flexible dye-sensitized solar cells[J]. Energy Environ Sci, 2012,5:5750-5757.
[9] Wang J, Lin Z. Dye-sensitized TiO$_{2}$ nanotube solar cells with markedly enhanced performance via rational surface engineering[J]. Chem Mater, 2010,22:579-584.
[10] Liang J, Zhang G, Yin J, et al. Transparent, 3-dimensional light-collected, and flexible fiber-type dye-sensitized solar cells based on highly ordered hierarchical anatase TiO$_2$ nanorod arrays[J]. J Power Sources 2014,272:719-729.
[11] Xi M, Zhang Y, Long L, et al. Controllable hydrothermal synjournal of rutile TiO$_{2}$ hollow nanorod arrays on TiCl$_{4}$ pretreated Ti foil for DSSC application[J]. J Solid State Chem, 2014,219:118-126.
[12] Park K, Dhayal M. Simultaneous growth of rutile TiO$_2$ as 1D/3D nanorod/nanoflower on FTO in one-step process enhances electrochemical response of photoanode in DSSC[J]. Electrochem Commun, 2014,49:47-50.
[13] Liu J, Luo J, Yang W, et al. Synjournal of single-crystalline anatase TiO$_{2}$ nanorods with high-performance dye-sensitized solar cells[J]. J Mater Sci & Tech, 2015,31:106-109.
[14] Yang W, Xu Y, Tang Y, et al. Three-dimensional self-branching anatase TiO$_{2}$ nanorods: morphology control, growth mechanism and dye-sensitized solar cell application[J]. J Mater Chem A, 2014,38:16030-16038.
[15] Barnes P R F, Miettunen K, Li X, et al. Interpretation of optoelectronic transient and charge extraction measurements in dye-sensitized solar cells[J]. Adv Mater, 2013,25:1881-1922.
[16] Wen P, Ishikawa Y, Itoh H, et al. Topotactic transformation reaction from layered titanate nanosheets into anatase nanocrystals[J]. J Phys Chem C, 2009,113:20275-20280.
Options
Outlines

/

〈 〉