Enhanced photovoltaic conversion efficiency in dye-sensitized solar cells based on photoanode consisting of TiO2/GO/Ag nanofibers

Nien, Yu–Hsun; Chen, Huang-Hua; Hsu, Hui-Hsuan; Kuo, Po-Yu; Chou, Jung-Chuan; Lai, Chih-Hsien; Hu, Geng-Ming; Kuo, Chung-Ming; Ko, Cheng-Chu

doi:10.1016/j.vacuum.2019.05.022

Cited by 36 publications

(15 citation statements)

References 26 publications

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“…The highest R 2 is from TANLP at 46 ohms. The high R 2 indicates the reduced probability of charge transfer capacity, which was discussed in our previous study [21].…”

Section: Measurement For the Photovoltaic Parameters Of The Dsscmentioning

confidence: 54%

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Study of How Photoelectrodes Modified by TiO2/Ag Nanofibers in Various Structures Enhance the Efficiency of Dye-Sensitized Solar Cells under Low Illumination

et al. 2020

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Dye-sensitized solar cells (DSSCs) are low-cost solar cells belonging to the thin-film photovoltaic cell type. In this study, we studied the photovoltaic performances of DSSCs based on titanium dioxide (TiO2) nanofibers (NFs) containing silver (Ag) nanoparticles (NPs) under low illumination. We used the sol-gel method with the electrospinning technique to prepare the TiO2 NFs containing Ag NPs. Herein, we used two ways to add TiO2/Ag NFs to modify the photoelectrode successfully and enhance the performance of DSSCs. One way was that the TiO2/Ag NFs were mixed with pristine TiO2; the other way was that the TiO2/Ag NFs were seeded beside the TiO2 colloid layer as an additional layer on the photoelectrode of the DSSC. According to this experiment, the photovoltaic conversion efficiency of the DSSC which had TiO2/Ag NF seeded as an additional layer on the photoelectrode (5.13%) was increased by 28% compared to the DSSC without the photoelectrode modification (3.99%). This was due to the suppression of electron recombination and the more effective utilization of the light radiation by adding the TiO2/Ag NFs. Because of the good conductivity of Ag, the electrons were quickly transported and electron recombination was reduced. In addition, the photovoltaic conversion efficiency of the DSSC which had TiO2/Ag NF seeded as an additional layer on the photoelectrode increased from 5.13% to 6.23% during the decrease in illumination from 100 mW/cm2 to 30 mW/cm2; however, its photovoltaic conversion efficiency decreased to 5.31% when the illumination was lowered to 10 mW/cm2.

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“…The highest R 2 is from TANLP at 46 ohms. The high R 2 indicates the reduced probability of charge transfer capacity, which was discussed in our previous study [21].…”

Section: Measurement For the Photovoltaic Parameters Of The Dsscmentioning

confidence: 54%

“…Figure 2a, which we have characterized from our previous work [21], shows an image of the top view of the TiO 2 layer. Figure 2b shows an image of the TiO 2 /Ag NF using field emission scanning electron microscopy (FE-SEM).…”

Section: Morphology and Characterization Of Ag/ Tio 2 Nanofibermentioning

confidence: 99%

Study of How Photoelectrodes Modified by TiO2/Ag Nanofibers in Various Structures Enhance the Efficiency of Dye-Sensitized Solar Cells under Low Illumination

et al. 2020

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“…A TiO2 nanomaterial photoanode composed of and modified by noble metals can increase the specific surface area and increase the adsorption of dyes; manufacturing a photoanode with appropriate structural modification can also significantly improve the efficiency of a DSSC. In addition, since the TiO2 nanomaterial photoanode composed of and modified by noble metals can provide more efficient electron transfer, it has attracted widespread attention in the DSSC field in recent years [10].…”

Section: Introductionmentioning

confidence: 99%

“…The localized surface plasmon resonance (LSPR) effect caused by gold or silver precious metal nanoparticles has been reported to enhance the light trapping in DSSC applications [3,10,11]. It is believed that different metal nanostructures based on the different combinations of TiO2 nanomaterials will have an impact on the whole efficiency of DSSCs.…”

Section: Introductionmentioning

confidence: 99%

AgNWs@TiO2 and AgNPs@TiO2 Double-Layer Photoanode Film Improving Light Capture and Application under Low Illumination

et al. 2021

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In this article, silver nanowires (AgNWs) were prepared and introduced into the double-layer photoanode of dye-sensitized solar cells (DSSCs). Silver nanowires with a diameter of about 50–60 nm and a length of 1–2 mm were prepared by the polyol method. The power conversion efficiency of the double-layer photoanode DSSC made of AgNWs@TiO2 and AgNPs@TiO2 composite materials is 6.38%. Compared with the unmodified DSSC, the composite double-layer photoanode combined with AgNWs and AgNPs increased the efficiency of DSSC by 58.7%. This increased efficiency was mainly due to the localized surface plasmon resonance effect caused by AgNPs and AgNWs. The increased light collection was caused by the plasma effect of AgNPs, and it increased the short-circuit photocurrent density (JSC). The conductive properties of AgNWs improved interface charge transfer and delay charge recombination. The effect of a low light environment on DSSC efficiency was also investigated, and the best photovoltaic conversion efficiency under an irradiance of 10 mW/cm2 was found to be 8.78%.

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“…In the photoanode part there are several studies involving changes in semiconductor morphology in search of efficiency improvement, such as titanium 6 and zinc 7 oxide nanorods, nanotubes 8 , nanosheets 9 , hierarchical nanosheets and nanobeads 10 ; however the yield gain generated by these changes is usually low. Composite forms were also tested, as TiO 2 /graphene oxide/Ag nanofibers, with increased efficiency in relation to standard DSSC 11 . Other materials were used as photoanodes such as tin oxide 12 , cerium oxide 13,14 and antimonium oxide 15 though not as successfully as titanium and zinc oxides.…”

Section: Introductionmentioning

confidence: 99%

Dye-Sensitized Solar Cells: Components Screening for Glass substrate, Counter-Electrode, Photoanode and Electrolyte

et al. 2020

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The dye-sensitized solar cells (DSSC) represents a viable and low-cost alternative to generate electrical power by the sunlight. In the present work, the DSSC components such as glass substrate (ITO/ FTO), counter-electrode (graphite/platinum), photoanode components (use or not of AuNPs as Shottky barriers) and electrolyte concentration and components were screened to understand their influence on device operation. FTO substrates and Pt counter-electrode were shown to perform best. However, the use of such metal does not comply with the device low cost approach. Gold nanoparticles in the photoanode did not result in an increase of efficiency. Finally, the electrolyte composition influenced the device performance: it was observed that the highest efficiency was obtained for the electrolytes containing 4-tert-butylpyridine together with smaller cations (such as Na and K) as counter-ions to triiodide. The highest efficiency achieved in this work was 1.26%.

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Enhanced photovoltaic conversion efficiency in dye-sensitized solar cells based on photoanode consisting of TiO2/GO/Ag nanofibers

Cited by 36 publications

References 26 publications

Study of How Photoelectrodes Modified by TiO2/Ag Nanofibers in Various Structures Enhance the Efficiency of Dye-Sensitized Solar Cells under Low Illumination

Study of How Photoelectrodes Modified by TiO2/Ag Nanofibers in Various Structures Enhance the Efficiency of Dye-Sensitized Solar Cells under Low Illumination

AgNWs@TiO2 and AgNPs@TiO2 Double-Layer Photoanode Film Improving Light Capture and Application under Low Illumination

Dye-Sensitized Solar Cells: Components Screening for Glass substrate, Counter-Electrode, Photoanode and Electrolyte

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