ThCr2Si2-type quaternary chalcogenides as efficient Pt-free counter electrodes for dye-sensitized solar cells

Zhang, Ganghua; Zhu, Mingjun; Zhai, Lianna; Cao, Jianwu; Gao, Zhipeng; Zeng, Tao

doi:10.1016/j.jallcom.2019.152797

Cited by 9 publications

(2 citation statements)

References 44 publications

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“…This research demonstrated a notable improvement in catalytic activity. In a separate study, Zhang et al [27] conducted an investigation into the development of incompact stacking of nanocrystallites hierarchical architectures that integrate ThCr 2 Si 2 -type chalcogenides. This type integrated nanostructures revealed the enhancement in the electrocatalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Bismuth sulfide/carbon black: as a pt free and efficient counter electrode in DSSC

Shaikh,

Rajput,

Kale

2024

Phys. Scr.

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A hydrothermal process has been employed to synthesis Bi2S3 microstructures at a different reaction temperature from 140-180 0C. The effects of reaction temperature on structural, morphological and optical properties of deposited Bi2S3 material have been investigated systematically. The XRD patterns show the formation of the orthorhombic crystal structure. FESEM images revealed the formation of 3D microstructures of Bi2S3, with respect to the reaction temperature. Further, the carbon black-Bi2S3 composites were used as a counter electrode for efficient dye-sensitized solar cell (DSSC) application. Current density-voltage characteristics of DSSC showed the correlation between the photoconversion efficiency and reaction temperature. The maximum photoelectric conversion efficiency reached 4.37 % along with short-circuit current density of 10.29 mA/cm2 and open- circuit potential of 0.70 V was observed for carbon black-Bi2S3 film for 1:1 ratio.

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Section: Introductionmentioning

confidence: 99%

Bismuth sulfide/carbon black: as a pt free and efficient counter electrode in DSSC

Shaikh,

Rajput,

Kale

2024

Phys. Scr.

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“…Recently, the chalcogenides (ChG) thin films have received much attention in the past years owing to their diverse and numerous applications in electronic devices and memory switching, as well as in the nonlinear optical devices [4][5][6][7][8]. These ChG materials are characterized by their low phonon energy and their transparency in visible and infrared regions [9][10][11][12]. Also be doped by some rare earth elements, like Pr, Er, Nd, ... etc.…”

Section: Introductionmentioning

confidence: 99%

Comparative Studies for Determining the Optical Band-gap Energy of the Novel Polycrystalline Thin Znga2s4 Films Sprayed at Different Film Thicknesses

Hassanien

Akl

Radaf

2021

Preprint

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This article has dedicated to studying some structural features and optical characteristics of the Novel polycrystalline ZnGa2S4 (ZGS) thin films utilizing spray pyrolysis process at different thicknesses (293, 375, 452, and 517nm). The microstructural properties and crystal defects of these films have been studied in previous work. While in this work, the crystallinity degree and crystalline volume fraction have been studied using X-ray diffractograms. The stoichiometry of these ZnGa2S4 films has been checked using the energy dispersive x-ray analysis. The field-emission-scanning-electron microscope has been utilized to investigate the morphology of ZGS films' surfaces. Optical properties have been studied via transmittance and reflectance spectra in the range 300nm - 2500nm. Some important optical parameters such as absorption coefficient, skin depth, Urbach's energy, steepness parameters, and electron-phonon interactions have been extensively studied. The direct and indirect gap energy were determined by different four models and compared with Tauc’s model. Optical data analysis revealed that; all studied properties are strongly dependent on the film thickness. The optical band gap values were slightly decreased from 3.7eV to 4.1eV with increment of the film thickness owing to improving the crystallization process. These obtained results confirm that these films are wide band gap semiconductors, which makes them recommended for use in many solar cell applications as a window layer.

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Optical characteristics of the novel nanosized thin ZnGa2S4 films sprayed at different deposition times: Determination of optical band-gap energy using different methods

2023

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ThCr2Si2-type quaternary chalcogenides as efficient Pt-free counter electrodes for dye-sensitized solar cells

Cited by 9 publications

References 44 publications

Bismuth sulfide/carbon black: as a pt free and efficient counter electrode in DSSC

Bismuth sulfide/carbon black: as a pt free and efficient counter electrode in DSSC

Comparative Studies for Determining the Optical Band-gap Energy of the Novel Polycrystalline Thin Znga2s4 Films Sprayed at Different Film Thicknesses

Optical characteristics of the novel nanosized thin ZnGa2S4 films sprayed at different deposition times: Determination of optical band-gap energy using different methods

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