Photovoltaic Properties of Dye-Sensitized Solar Cells Using Novel Aligned ZnO Nanorod Arrays on Sn-Doped ZnO Seeded Catalyst with Different Aspect Ratio

The Sn-doped ZnO thin films were deposited on glass and ITO by sol gel Spin Coating technique. The Structural and electrical properties of Sn-doped ZnO thin films were studied and discussed. The Sn-doped ZnO thin film particle sizes were decreased whenever the doping concentration increased. Besides that, the resistivity 7.7 x 102 Ω.cm was obtained at 2 at.% Sn-doped thin films and aligned ZnO nanorod arrays with large surface area were grown on 2 at.% Sn-doped ZnO film. Therefore, dye sensitized solar cell at 2.0 at.% Sn-doped ZnO thin films with aligned ZnO Nanorod arrays have improved in the photocurrent density and conversion efficiency.

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Preparation of Aligned ZnO Nanorod Arrays on Sn-Doped ZnO Thin Films by Sonicated Sol-Gel Immersion Fabricated for Dye-Sensitized Solar Cell

Advances in Materials Science and Engineering ◽

10.1155/2014/636725 ◽

2014 ◽

Vol 2014 ◽

pp. 1-8 ◽

Cited By ~ 1

Author(s):

I. Saurdi ◽

M. H. Mamat ◽

M. F. Malek ◽

M. Rusop

Keyword(s):

Thin Film ◽

Thin Films ◽

Sol Gel ◽

Visible Region ◽

Zno Thin Films ◽

Zno Nanorod ◽

Zno Thin Film ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

Doped Zno

Aligned ZnO Nanorod arrays are deposited on the Sn-doped ZnO thin film via sonicated sol-gel immersion method. The structural, optical, and electrical properties of the Sn-doped ZnO thin films were investigated. Results show that the Sn-doped ZnO thin films with small grain size (~20 nm), high average transmittance (96%) in visible region, and good resistivity7.7 × 102 Ω·cm are obtained for 2 at.% Sn doping concentration. The aligned ZnO nanorod arrays with large surface area were also obtained for 2 at.% Sn-doped ZnO thin film. They were grown on sol-gel derived Sn-doped ZnO thin film, which acts as a seed layer, via sonicated sol-gel immersion method. The grown aligned ZnO nanorod arrays show high transmittance at visible region. The fabricated dye-sensitised solar cell based on the 2.0 at.% Sn-doped ZnO thin film with aligned ZnO nanorod arrays exhibits improved current density, open-circuit voltage, fill factor, and conversion efficiency compared with the undoped ZnO and 1 at.% Sn-doped ZnO thin films.

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Dye-sensitized solar cells using novel aligned ZnO nanorod arrays on Sn-doped ZnO thin film

2013 International Conference on Electrical, Electronics and System Engineering (ICEESE) ◽

10.1109/iceese.2013.6895034 ◽

2013 ◽

Author(s):

I. Saurdi ◽

M.H. Mamat ◽

M. Rusop

Keyword(s):

Thin Film ◽

Solar Cells ◽

Dye Sensitized Solar Cells ◽

Zno Nanorod ◽

Zno Thin Film ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

Dye Sensitized ◽

Doped Zno ◽

Sensitized Solar Cells

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Electrochemical and structural analysis of Al-doped ZnO nanorod arrays in dye-sensitized solar cells

Journal of Power Sources ◽

10.1016/j.jpowsour.2012.04.071 ◽

2012 ◽

Vol 214 ◽

pp. 159-165 ◽

Cited By ~ 29

Author(s):

Runbang Tao ◽

Takahiro Tomita ◽

Raymond Albert Wong ◽

Keiko Waki

Keyword(s):

Solar Cells ◽

Structural Analysis ◽

Dye Sensitized Solar Cells ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

Dye Sensitized ◽

Doped Zno ◽

Sensitized Solar Cells

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Synthesis of ZnO Nanorod Arrays on Chaleted Sol-Gel-Derived ZnO Thin Films and its Optical Absorption in Visible-Light Region

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.750-752.253 ◽

2013 ◽

Vol 750-752 ◽

pp. 253-258

Author(s):

Li Rong Yang ◽

Jun Cong Wei ◽

Li Zhang ◽

Hai Bin Chen

Keyword(s):

Thin Films ◽

Visible Light ◽

Sol Gel ◽

Zno Nanorods ◽

Zno Thin Films ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

Practical Applications ◽

Absorbance Spectra

Well-aligned ZnO nanorod arrays on Chaleted Sol-Gel-Derived ZnO thin films was achieved at a temperature of 90°C by a surfactant-assisted soft chemical approach. The nanorod arrays were characterized by XRD, SEM, XPS, and UV-Vis absorbance spectra. The ZnO nanorod arrays are wurtzite crystal stuctures preferentially orienting in the direction of the c-axis and ZnO nanorods are grown verticallyon the substrate. The XPS analysis shows the Zn:O ratio of ZnO nanorod arrays near is 1:1. The UV-Vis absorbance spectra indicate that ZnO nanorod arrays have absorption of visible-light as well as ultraviolet-light. Therefore, the ZnO nanorods may be good candidates for visible-light photocatalysis materials from the viewpoint of practical applications.

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Solution Processed Zn1−x−ySmxCuyO Nanorod Arrays for Dye Sensitized Solar Cells

Nanomaterials ◽

10.3390/nano11071710 ◽

2021 ◽

Vol 11 (7) ◽

pp. 1710

Author(s):

Muhammad Saleem ◽

Ali Algahtani ◽

Saif Ur Rehman ◽

Muhammad Sufyan Javed ◽

Kashif Irshad ◽

...

Keyword(s):

Solar Cells ◽

Dye Sensitized Solar Cells ◽

Concentration Field ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

Absorption Region ◽

Photovoltaic Properties ◽

Dye Sensitized ◽

Sensitized Solar Cells

Cu- and Sm-doped ZnO nanorod arrays were grown with 1 wt% of Sm and different weight percents (0.0, 0.5, 1.0 and 1.5 wt%) of Cu by two-step hydrothermal method. The influence of Cu concentration and precursor of Sm on the structural, optical and photovoltaic properties of ZnO nanorod arrays was investigated. An X-ray diffraction study showed that the nanorod arrays grown along the (002) plane, i.e., c-axis, had hexagonal wurtzite crystal structure. The lattice strain is present in all samples and shows an increasing trend with Cu/Sm concentration. Field emission scanning electron microscopy was used to investigate the morphology and the nanorod arrays grown vertically on the FTO substrates. The diameter of nanorod arrays ranged from 68 nm to 137 nm and was found highly dependent on Cu concentration and Sm precursor while the density of nanorod arrays almost remains the same. The grown nanorod arrays served as photoelectrodes for fabricating dye-sensitized solar cells (DSSCs). The overall light to electricity conversion efficiency ranged from 1.74% (sample S1, doped with 1 wt% of Sm and 0.0 wt% of Cu) to more than 4.14% (sample S4, doped with 1 wt% of Sm and 1.5 wt% of Cu), which is 60% higher than former sample S1. The increment in DSSCs efficiency is attributed either because of the doping of Sm3+ ions which increase the absorption region of light spectrum by up/down conversion or the doping of Cu ions which decrease the recombination and backward transfer of photo-generated electrons and increase the electron transport mobility. This work indicates that the coupled use of Cu and Sm in ZnO nanorod array films have the potential to enhance the performance of dye-sensitized solar cells.

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