The effect of the agglomerated microstructure of dry-deposited TiO2 electrodes on the performance of dye-sensitized solar cells

Yang, Seungkyu; Kim, Hyungsub; Ahn, Sung‐Hoon; Lee, Caroline Sunyong

doi:10.1016/j.electacta.2015.03.082

Cited by 14 publications

(2 citation statements)

References 31 publications

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“…Internal electrochemical reaction of electron in fabricated DSSC was investigated by electrochemical impedance spectra measurement in the dark with forward bias voltage of −0.7 V for steady state as shown as Nyquist plot in Figure 5. The EIS parameters were fitted using Z-view software under equivalent circuits according to the inset of Figure 5(a) [6,25]. Three main internal resistances of , ct1 , and ct2 correspond to series resistance and charge transfer resistance at electrolyte/Pt interfaces and at ZnO/dye/electrolyte interfaces, respectively [26].…”

Section: Electrochemical Impedance Spectroscopy (Eis) Analysismentioning

confidence: 99%

Surface Modification of Porous Photoelectrode Using Etching Process for Efficiency Enhancement of ZnO Dye-Sensitized Solar Cells

Sutthana

Wongratanaphisan

Gardchareon

et al. 2016

Journal of Nanomaterials

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Surface modification of porous ZnO photoelectrode using one- and two-step etching process is investigated for enhancing power conversion efficiency of ZnO dye-sensitized solar cells. ZnO films are modified by the diluted NH4OH solutions for one-step etching process and used as photoelectrode of dye-sensitized solar cells. Rough porous films are observed after one-step etching process. The fabricated cells based on the optimized one-step etched films show a significant increase in short-circuit current density. The short-circuit current density is directly changed with amount of dye adsorption, which is related to specific surface area. The etched films exhibit higher specific surface area over two times than nonetched films. Thus, the large specific surface area is the key success for increasing amount of dye adsorption. Internal electrochemical property of fabricated cells is also improved, indicating that chemical surface of ZnO films is modified in the same time. The DSSCs fabricated on two-step etched films with NH4OH and mixed acid HCl : HNO3show the maximum power conversion efficiency of 2.26%. Moreover, fill factor is also increased due to better redox process because of the formation of fine porous structure during the etching process. Therefore, these results implied that the roles of etching processes are improving specific surface area and fine porous formation which can provide better dye adsorption and redox process for dye-sensitized solar cell application.

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Section: Electrochemical Impedance Spectroscopy (Eis) Analysismentioning

confidence: 99%

Surface Modification of Porous Photoelectrode Using Etching Process for Efficiency Enhancement of ZnO Dye-Sensitized Solar Cells

Sutthana

Wongratanaphisan

Gardchareon

et al. 2016

Journal of Nanomaterials

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“…As a result, it attracted much attention over the past decade [ 23 ]. Moreover, AD was already used for the controlled formation of TiO 2 layers in dye-sensitized solar cells (DSSCs) [ 24 , 25 ]. In general, it is a method that is used to produce dense ceramic coatings fully at room temperature conditions directly from a bulk powder.…”

Section: Introductionmentioning

confidence: 99%

Compact Layers of Hybrid Halide Perovskites Fabricated via the Aerosol Deposition Process—Uncoupling Material Synthesis and Layer Formation

et al. 2016

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We present the successful fabrication of CH3NH3PbI3 perovskite layers by the aerosol deposition method (ADM). The layers show high structural purity and compactness, thus making them suitable for application in perovskite-based optoelectronic devices. By using the aerosol deposition method we are able to decouple material synthesis from layer processing. Our results therefore allow for enhanced and easy control over the fabrication of perovskite-based devices, further paving the way for their commercialization.

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Characterization of Aerosol Deposited Cesium Lead Tribromide Perovskite Films on Interdigited ITO Electrodes

These

Khansur

Almora

et al. 2021

Adv Elect Materials

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Aerosol deposition (AD) is a promising additive manufacturing method to fabricate low‐cost, scalable films at room temperature, but has not been considered for semiconductor processing, so far. The successful preparation of cesium lead tribromide (CsPbBr3) perovskite films on interdigitated indium tin oxide (ITO) electrodes by means of AD is reported here. The 20–35 µm thick layers are dense and have good adhesion to the substrate. The orthorhombic Pnma crystal structure of the precursor powder was retained during the deposition process with no signs of defect formation. The formation of electronic defects by photoluminescence spectroscopy is investigated and found slightly increased carrier recombination from defect sites for AD films compared to the powder. A nonuniform defect distribution across the layer, presumably induced by the impact of the semiconducting grains on the hard substrate surface, is revealed. The opto‐electronic properties of AD processed semiconducting films is further tested by electrical measurements and confirmed good semiconducting properties and high responsivity for the films. These results demonstrate that AD processing of metal halide perovskites is possible for opto‐electronic device manufacturing on 3D surfaces. It is believed that this work paves the way for the fabrication of previously unimaginable opto‐electronic devices by additive manufacturing.

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The effect of the agglomerated microstructure of dry-deposited TiO2 electrodes on the performance of dye-sensitized solar cells

Cited by 14 publications

References 31 publications

Surface Modification of Porous Photoelectrode Using Etching Process for Efficiency Enhancement of ZnO Dye-Sensitized Solar Cells

Surface Modification of Porous Photoelectrode Using Etching Process for Efficiency Enhancement of ZnO Dye-Sensitized Solar Cells

Compact Layers of Hybrid Halide Perovskites Fabricated via the Aerosol Deposition Process—Uncoupling Material Synthesis and Layer Formation

Characterization of Aerosol Deposited Cesium Lead Tribromide Perovskite Films on Interdigited ITO Electrodes

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