Optimization of hierarchical light-scattering layers in TiO2 photoelectrodes of dye-sensitized solar cells

Nath, Narayan Chandra Deb; Jung, Insoo; Kim, Sang–Wook; Lee, Jae‐Joon

doi:10.1016/j.solener.2016.05.008

Cited by 14 publications

(12 citation statements)

References 42 publications

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“…The DSSCs efficiencies in this work were range from 0.890 to 3.122% as shown in the Table 1. Compared with some previous studies [27,30,31], those efficiencies were relatively too low. It caused by the lower fill factor in the solar cell circuit.…”

Section: Performance Of Dsscscontrasting

confidence: 84%

“…As a result, the DSSC with double layer of photonoda with a scattering layer leaded a higher photovoltaic conversion efficiency [30,31]. The previous study by Nath et al showed that the use of light-scattering layers in the photoanode improved the incident photon-to-current conversion efficiency (IPCE) of the DSSC up to 32% [27]. By using TiO 2 hollow microspheres with a diameter of 500-800 nm, and Xie et al reported that light-scattering layers enhanced photovoltaic efficiency from 6.49 to 7.59% [30].…”

Section:   (3)mentioning

confidence: 99%

“…Small-sized nanomaterials possess a large surface area for absorbing dye molecules. However, the high surface area of the photoanode reduces its ability to trap light owing to the large amount of grain boundaries, due to which most of the incoming light (incident light path) is lost [26,27]. On the other hand, large-size semiconductors (>100 nm) can capture a greater amount of the incoming light (incident light path) and scatter more photons in the photoanode; however, their ability to absorb dye molecules is low because of the reduced surface area [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

“…Chava et al also mentioned that the photoanode based on 150-200 nm TiO 2 hollow nanoparticles for scattering layer increased photovoltaic efficiency from 6.08% to 7.58% [31]. The light-scattering layer in photoanode of DSSC provide a longer electron transfer path and higher charge-collection efficiency for improving photoconversion efficiency [18,27].…”

Section: Introductionmentioning

confidence: 99%

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Improved Performance of Dye-Sensitized Solar Cells with TiO2 Nanoparticles/Zn-Doped TiO2 Hollow Fiber Photoanodes

et al. 2018

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In this study, dye-sensitized solar cells (DSSCs) were fabricated using double-layer photoanodes consisting of TiO2 nanoparticles (NPs) and Zn-doped TiO2 hollow fibers (HFs). The TiO2 HFs were prepared by co-axial electrospinning and used as the light-scattering layer in the DSSC. The thickness variations of the TiO2 NP and Zn-doped TiO2 HF photoanode layers affect the performance of the DSSC, especially the short-circuit photocurrent density. The thickness of the TiO2 NP layer significantly affected the absorbance of photons and N719 dye molecules in the double-layer photoanode, while that of the Zn-doped TiO2 HF layer affected the scattering of light, as indicated by the low light transmittance in the photoanode. Conventional DSSCs consist of single-layer photoanodes, and exhibit relatively low efficiency, i.e., 1.293% and 0.89% for TiO2 NP and Zn-doped TiO2 HF, respectively. However, herein, the highest efficiency of the DSSC (3.122%) was achieved with a 15 μm NP-5 μm HF photoanode, for which the short-circuit photocurrent density, open-circuit photovoltage, and fill factor were 15.81 mA/cm2, 0.566 V, and 34.91%, respectively.

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Section: Performance Of Dsscscontrasting

confidence: 84%

Section:   (3)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Improved Performance of Dye-Sensitized Solar Cells with TiO2 Nanoparticles/Zn-Doped TiO2 Hollow Fiber Photoanodes

et al. 2018

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“…It is noticed that better performance was due to the increase of the light path length caused by the reflection of the scattered light on the tilted facets of the textured structures. Also, Nath et al introduced hierarchically arranged light-scattering layers (LSLs) into the regular TiO 2 films of DSSCs to enhance the LHE in the visible region of light [23]. The optical density was significantly enhanced inside the film by the effect of producing higher wavelength light gradually with an increase in scattering particle size.…”

Section: Introductionmentioning

confidence: 99%

Development of Macro-Porous Silicon Based Dye-Sensitized Solar Cells with Improved Light Trapping

Aliaghayee¹,

Fard²,

Zandi³

2016

Journal of Electrochemical Science and Technology

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The light harvesting efficiency is counted as an important factor in the power conversion efficiency of DSSCs. There are two measures to improve this parameter, including enhancing the dye-loading capacity and increasing the light trapping in the photoanode structure. In this paper, these tasks are addressed by introducing a macro-porous silicon (PSi) substrate as photoanode. The effects of the novel photoanode structure on the DSSC performance have been investigated by using energy dispersive X-ray spectroscopy, photocurrent-voltage, UV-visible spectroscopy, reflectance spectroscopy, and electrochemical impedance spectroscopy measurements. The results indicated that bigger porosity percentage of the PSi structure improved the both anti-reflective/light-trapping and dye-loading capacity properties. PSi based DSSCs own higher power conversion efficiency due to its remarkable higher photocurrent, open circuit voltage, and fill factor. Percent porosity of 64%, PSi(III), resulted in nearly 50 percent increment in power conversion efficiency compared with conventional DSSC. This paper showed that PSi can be a good candidate for the improvement of light harvesting efficiency in DSSCs. Furthermore, this study can be considered a valuable reference for more investigations in the design of multifunctional devices which will profit from integrated on-chip solar power.

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Halide Perovskite Solar Cells with Biocompatibility

Debnath

Kim

Lee

et al. 2020

Adv Energy and Sustain Res

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Recently, the perovskite solar cell (PSC) has gained increasing attention because of its remarkable surge in power conversion efficiency (PCE), up to 25.2%, over the past several years. Unfortunately, most of the efficient PSCs contain lead (Pb), a toxic metal which is an occupational and environmental hazard. Exposure to Pb is extremely common and can lead to significant detrimental neuropsychological and physical effects in humans. Tin (Sn) is also listed as a hazardous metal and causes issues, similar to those raised by Pb, regarding environment and human health. Moreover, the perovskite itself degrades into hazardous compounds under external stimuli. Solar technology is growing at an exponential speed, and the research into its environmental impacts are, therefore, becoming gradually important. Herein, a comprehensive account of recent literature on the environmental and human health effects of Pb and Sn exposure, and the sources and routes of their toxicities during processing, fabrication, application, degradation, and withdrawal or recycling of halide perovskites and their solar devices is provided. In addition, the future perspectives on nontoxic and stable perovskites for sustainable solar devices are discussed.

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Optimization of hierarchical light-scattering layers in TiO2 photoelectrodes of dye-sensitized solar cells

Cited by 14 publications

References 42 publications

Improved Performance of Dye-Sensitized Solar Cells with TiO2 Nanoparticles/Zn-Doped TiO2 Hollow Fiber Photoanodes

Improved Performance of Dye-Sensitized Solar Cells with TiO2 Nanoparticles/Zn-Doped TiO2 Hollow Fiber Photoanodes

Development of Macro-Porous Silicon Based Dye-Sensitized Solar Cells with Improved Light Trapping

Halide Perovskite Solar Cells with Biocompatibility

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