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Titanium dioxide/agglomerated-free reduced graphene oxide hybrid photoanode film for dye-sensitized solar cells photovoltaic performance improvement

Suriani, A. B. and Muqoyyanah, Muqoyyanah and Mohamed, A. and Mamat, M. H. and Othman, M. H. D. and Ahmad, M. K. and Abdul Khalil, H. P. S. and Marwoto, P. and Birowosuto, M. D. (2019) Titanium dioxide/agglomerated-free reduced graphene oxide hybrid photoanode film for dye-sensitized solar cells photovoltaic performance improvement. Nano-Structures and Nano-Objects, 18 . ISSN 2352-507X

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Official URL: https://dx.doi.org/10.1016/j.nanoso.2019.100314

Abstract

In this work, the role of agglomerated-free reduced graphene oxide (rGO) in the modification of titanium dioxide (TiO 2 ) photoanode film was investigated for the enhancement of photovoltaic performance in dye-sensitized solar cells (DSSCs). The rutile TiO 2 nanorods–nanoflowers (NRs–NFs) and the photoanode layer consisting of anatase TiO 2 nanoparticles (NPs) were synthesized by the simple hydrothermal growth and squeegee method, respectively. Post-annealing treatment of TiO 2 NRs–NFs was also done in order to investigate its effect on the DSSCs performance. Meanwhile, the rGO solution was produced by reducing a graphene oxide (GO) solution utilizing hydrazine hydrate via a chemical reduction process. The initial GO solution was synthesized by electrochemical exfoliation assisted by a hyper-branched sodium 1,4-bis (neopentyloxy)-3-(neopentyloxycarbonyl)-1,4-dioxobutane-2-sulphonate (TC14) surfactant. The produced TC14-rGO was also hybridized with multi-walled carbon nanotubes (MWCNTs), which then coated by thin platinum (Pt) NPs (TC14-rGO_MWCNTs/Pt) and used as counter electrode (CE) thin film. Based on solar simulator measurements, the highest energy conversion efficiency (η) (1.559%) was achieved by TiO 2 NRs–NFs/TC14-rGO/TiO 2 NPs hybrid photoanode film with the short current density (J sc ), open circuit voltage (V oc ), and fill factor (FF) of 3.275 mA/cm 2 , 0.747 V, and 53.5, respectively as compared to others fabricated photoanode films; non-ann TiO 2 NRs–NFs/TiO 2 NPs (1.215%), ann TiO 2 NRs–NFs/TiO 2 NPs (1.462%), and TiO 2 NRs–NFs/TiO 2 NPs/TC14-rGO (0.525%). This result shows that the utilization of TC14-rGO for both photoanode and CE film increases the conductivity of the film. High η was also supported by high dye adsorption promoted by TiO 2 NPs as the top photoanode layer.

Item Type:Article
Uncontrolled Keywords:DSSCs, hybid photoanode, hyper-branched surfactant
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:88621
Deposited By: Narimah Nawil
Deposited On:15 Dec 2020 18:35
Last Modified:15 Dec 2020 18:35

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