Reduced graphene oxide/platinum hybrid counter electrode assisted by custom-made triple-tail surfactant and zinc oxide/titanium dioxide bilayer nanocomposite photoanode for enhancement of DSSCs photovoltaic performance

Suriani, A. B.; Fatiatun,; Mohamed, Azmi; Muqoyyanah,; Hashim, Norhayati; Rosmi, Mohamad Saufi; Mamat, M. H.; Malek, M. F.; Salifairus, M. J.; Khalil, H. P. S. Abdul

doi:10.1016/j.ijleo.2018.02.013

Cited by 21 publications

(16 citation statements)

References 60 publications

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“…The addition of rGO, a large surface area material, increased the contact surface area of Pt particles on the cathode and also enhanced efficiency of the DSSCs. [11,12] Additionally, rGO was as conductive as Pt; the adding of the rGO improved conductivity of the cathodes, leading to the fast reaction kinetics in the reduction of I3 − and the decrease of charge recombination. [7,11] When the rGO content was increased, the amount of Pt particles was reduced, which decreased the efficiency of the DSSCs, because the certain amount of Pt was necessary to maintain the electrocatalytic properties of cathode.…”

Section: Dsscs Performancementioning

confidence: 99%

Synthesis of platinum/reduced graphene oxide composite for cathode in dye‐sensitized solar cells

Thinh

Nghia

et al. 2019

Vietnam Journal of Chemistry

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Platinum/reduced graphene oxide (Pt/rGO) composite materials with different mass ratios were fabricated by thermal decomposition method from H2PtCl6 and reduce graphene oxide (rGO) as precursors. Pt/rGO composites were used to fabricate Pt/rGO thin film cathodes by using the screen printing technology. The electrochemical properties of the fabricated cathodes were measured using the cyclic voltammetry method. Dye-sensitized solar cells (DSSCs) were assembled from fabricated cathodes and were measured the performances by current density-voltage (J-V) curves and electrochemical impedance spectroscopy (EIS). The results showed the appropriate replacement amount rGO with Pt was 40 %, with the efficiency of 4.73 %, which was higher than that of commercial Pt cathode. The characterizations of the appropriate Pt/rGO composite were investigated by Fourier-transform infrared spectroscopy (FTIR) and Raman spectroscopy. X-ray diffraction (XRD) patterns indicated that the interlayer distance between the rGO was 0.35 nm while the transmission electron microscopy (TEM) image showed the Pt nanoparticles with size of 10-20 nm were evenly distributed on the rGO sheets. These results indicated that Pt/rGO could be appropriated material to replace Pt in DSSCs to reduce the produce cost and enhance the efficiency.

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Section: Dsscs Performancementioning

confidence: 99%

Synthesis of platinum/reduced graphene oxide composite for cathode in dye‐sensitized solar cells

Thinh

Nghia

et al. 2019

Vietnam Journal of Chemistry

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“…Therefore, manufacturing highly efficient and highly stable DSSCs at a low cost has also become a hot research topic [ 25 ]. To reduce the cost and pursue high efficiency simultaneously, it has been reported in recent years that hybrid counter electrodes have been prepared by mixing inorganic substances and platinum to improve the economic efficiency [ 26 , 27 ]. In particular, carbon-containing materials are one of the main focuses of electrochemical research [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Efficiency of Dye-Sensitized Solar Cells Based on Polymer-Assisted Dispersion of Platinum Nanoparticles/Carbon Nanotubes Nanohybrid Films as FTO-Free Counter Electrodes

Chen

et al. 2021

Polymers

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In this study, polymer-assisted dispersants are used to stabilize the nanohybrids of platinum nanoparticles (PtNPs)/carbon nanotubes (CNTs) through non-covalent bond forces. These dispersants aim to replace the florine-doped tin oxide (FTO) glass in traditional dye-sensitized solar cells (DSSCs) as counter electrodes. The large specific surface area, high conductivity, and redox potential of PtNPs/CNT nanohybrids are used as the basis to utilize them as the counter electrode material to fabricate a dye-sensitized solar cell. The conductivity results indicate that the resistance of the PtNP/CNT nanohybrid film can be reduced to 7.25 Ω/sq. When carbon nanotubes are mixed with platinum nanoparticles at a weight ratio of 5/1, the photoelectric conversion efficiency of DSSCs can reach 6.28%. When using the FTO-containing substrate as the counter electrode, its conversion efficiency indicates that the micro-/nano-hybrid material formed by PtNPs/CNTs also exhibits an excellent photoelectric conversion efficiency (8.45%) on the traditional FTO substrate. Further, a large-area dye-sensitive cell is fabricated, showing that an 8 cm × 8 cm cell has a conversion efficiency of 7.95%. Therefore, the traditional Pt counter electrode can be replaced with a PtNP/CNT nanohybrid film, which both provides dye-sensitive cells with a high photoelectric conversion efficiency and reduces costs.

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“…4 However, the transient chemical stability of ZnO in photocatalytic applications results in low electron injection and, consequently, poor efficiency. 4,5 TiO 2 offers a better option because of several factors. Firstly, titania is one of the most frequently used semiconductors for solar harvesting due to its unique properties such as photostability, 6 optical properties, 7 and electronic attributes, 8 among others.…”

Section: Introductionmentioning

confidence: 99%

“…For example, ZnO exhibits excellent charge mobility and depressed electron‐hole lifetime in comparison with TiO 2. 4 However, the transient chemical stability of ZnO in photocatalytic applications results in low electron injection and, consequently, poor efficiency 4,5 . TiO 2 offers a better option because of several factors.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis of reduced graphene oxide‐anatase titania nanocomposites for dual application in organic solar cells

2020

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Lately, there has been increased interest in the design of graphene-based hybrid nanomaterials and their application to modify properties of organic solar cells (OSCs). Herein, we demonstrate an efficient route for the successful hydrothermal synthesis of reduced graphene oxide-anatase titania (RGOT) nanocomposites. Five nanocomposites with different titania concentrations, that is, RGOT-50, RGOT-75, RGOT-86, RGOT-90, and RGOT-92, were prepared. The nanocomposite RGOT-92 with the overall best properties was used to modify both the photoactive layer (P3HT:PCBM:RGOT) and hole transport layer (PEDOT:PSS:RGOT) of an OSC so as to assist in solar energy absorption by way of enhancing optical absorption and creating an efficient charge transport channel. The nanocomposites prepared consist of highly crystalline, spherical, and uniformly shaped TiO 2 nanoparticles, with an average particle size of approximately 3.0 nm, deposited on the basal plane of reduced graphene oxide. Also, the nanocomposites show much reduced bandgap energies and low rates of electron-hole recombination. The incorporation of RGOT in the active layer effectively improved photon absorption, leading to high photoexciton generation. In addition, effective exciton dissociation was energetically favoured in the RGOT-modified hole transport layer (HTL), which concurs with the observed enhanced conductivity of the medium. Thus, the integration of RGOT in the active layer and HTL remarkably resulted in a high short-circuit current density (J sc), low sheet resistance (R s), and, consequently, improved photovoltaic performance. An enhanced photocurrent was noted, as high as 13 mA cm −2 , from the OSCs by inlaying RGOT in the photoactive layer. An increased power conversion efficiency of up to 64% was achieved by the incorporation of RGOT in the photoactive layer. Thus, the utilized hydrothermal synthesis route provided nanocomposites with enhanced photoelectronic properties, with promising applications in nanoelectronic devices.

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Reduced graphene oxide/platinum hybrid counter electrode assisted by custom-made triple-tail surfactant and zinc oxide/titanium dioxide bilayer nanocomposite photoanode for enhancement of DSSCs photovoltaic performance

Cited by 21 publications

References 60 publications

Synthesis of platinum/reduced graphene oxide composite for cathode in dye‐sensitized solar cells

Synthesis of platinum/reduced graphene oxide composite for cathode in dye‐sensitized solar cells

Enhanced Efficiency of Dye-Sensitized Solar Cells Based on Polymer-Assisted Dispersion of Platinum Nanoparticles/Carbon Nanotubes Nanohybrid Films as FTO-Free Counter Electrodes

Hydrothermal synthesis of reduced graphene oxide‐anatase titania nanocomposites for dual application in organic solar cells

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