Electrophoretic behavior of solvothermal synthesized anion replaced Cu2ZnSn(SxSe1-x)4 films for photoelectrochemical water splitting

Badkoobehhezaveh, Amir Masoud; Abdizadeh, Hossein; Golobostanfard, Mohammad Reza

doi:10.1016/j.ijhydene.2018.04.140

Cited by 16 publications

(9 citation statements)

References 56 publications

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“…The magnified AFM images (Figure b) confirm the formation of Cu 2 Zn 1– x Cd x SnS 4 thin films with grain sizes in the range of 50–400 nm. Similar large grain sizes were reported by Badkoobehhezaveh et al from their SEM micrographs of CZT(S x Se 1– x ) 4 films fabricated by electrophoretic deposition technique without postannealing. Ravi et al employed a similar deposition procedure with an applied voltage of 100 V to achieve the deposition of larger linear rods (∼500 nm in length) of cesium lead halide perovskite nanocrystals without postannealing.…”

Section: Results and Discussionsupporting

confidence: 88%

Experimental and Theoretical Study into Interface Structure and Band Alignment of the Cu₂Zn_1–xCd_xSnS₄ Heterointerface for Photovoltaic Applications

Rondiya

Jadhav

Dzade

et al. 2020

ACS Appl. Energy Mater.

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To improve the constraints of kesterite Cu 2 ZnSnS 4 (CZTS) solar cell, such as undesirable band alignment at p–n interfaces, bandgap tuning, and fast carrier recombination, cadmium (Cd) is introduced into CZTS nanocrystals forming Cu 2 Zn 1– x Cd x SnS 4 through cost-effective solution-based method without postannealing or sulfurization treatments. A synergetic experimental–theoretical approach was employed to characterize and assess the optoelectronic properties of Cu 2 Zn 1– x Cd x SnS 4 materials. Tunable direct band gap energy ranging from 1.51 to 1.03 eV with high absorption coefficient was demonstrated for the Cu 2 Zn 1– x Cd x SnS 4 nanocrystals with changing Zn/Cd ratio. Such bandgap engineering in Cu 2 Zn 1– x Cd x SnS 4 helps in effective carrier separation at interface. Ultrafast spectroscopy reveals a longer lifetime and efficient separation of photoexcited charge carriers in Cu 2 CdSnS 4 (CCTS) nanocrystals compared to that of CZTS. We found that there exists a type-II staggered band alignment at the CZTS (CCTS)/CdS interface, from cyclic voltammetric (CV) measurements, corroborated by first-principles density functional theory (DFT) calculations, predicting smaller conduction band offset (CBO) at the CCTS/CdS interface as compared to the CZTS/CdS interface. These results point toward efficient separation of photoexcited carriers across the p–n junction in the ultrafast time scale and highlight a route to improve device performances.

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Section: Results and Discussionsupporting

confidence: 88%

Experimental and Theoretical Study into Interface Structure and Band Alignment of the Cu₂Zn_1–xCd_xSnS₄ Heterointerface for Photovoltaic Applications

Rondiya

Jadhav

Dzade

et al. 2020

ACS Appl. Energy Mater.

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“…The prominent peak related to the CZTSSe crystal phase transfers toward lower 2θ values with a certain increase in the Se 2– ion concentration; it might be due to the smaller S 2– ions (0.184 nm) substituted with larger Se 2– ions (0.198 nm) gently to maintain the same CZTSSe crystal structure. The stronger ionic radii of Se 2– compared to S 2– ions is due to increment in lattice parameters, which results in the peak shift. ,,, Comparative XRD parameters of the CZTSSe films were calculated from the relation Δ d (Å) = d e x p (Å) – d jcpds (Å) and summarized in Table S1. The crystallite size of all samples was estimated with Scherrer’s eq …”

Section: Results and Discussionmentioning

confidence: 99%

Investigating the Role of Selenium-Ion Concentration on Optoelectronic Properties of the Cu₂ZnSn(S_1–xSe_x)₄ Thin Films

Patil

Khot

Mali

et al. 2020

Ind. Eng. Chem. Res.

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Recently, deposition of Cu 2 ZnSn(S 1−x Se x ) 4 (CZTSSe) thin films directly onto substrates via a cost-effective hydrothermal route has become a promising approach for their further development. We investigated the influence of the Se 2− ion content on the growth and optoelectronic properties of CZTSSe thin films. The synthesized CZTSSe nanocrystalline films showed considerable refining in their optoelectronic and photovoltaic properties. The optical absorption of CZTSSe films revealed that the band gap energy decreases from 1.5 to 1.42 eV with increment in the Se 2− ion concentration. Structural analysis confirms the improvement in the crystallinity with the kesterite crystal structure, which was also validated by ( 112) plane shifting with varying Se 2− ion concentration. Surface morphological and structural analyses confirm the formation of a highly uniform, well-crystalline, and compactly interconnected nanosphere-like morphology. Compositional analysis confirms that the CZTSSe film shows desired stoichiometric ratios with Cu, Zn, Sn, S, and Se in +1, +2, +4, −2, and −2 oxidation states, respectively, in Cu 2 ZnSn(S 1−x Se x ) 4 compositions. The promising composition is observed for Cu 2 ZnSn(S 1−x Se x ) 4 films with x = 0.075 Se-ion concentration. Photoelectrochemical solar cells assembled for the CZTSSe photoelectrode exhibited a current density (J sc ) of 4.64 mA/cm 2 and an open-circuit voltage (V oc ) of 542 mV, leading to a photoconversion efficiency of 3.62%. Our electrochemical impedance spectroscopy suggests lower values of charge-transfer resistance (R ct ) generated at the photoelectrode−electrolyte interface, which is in well agreement with photoelectrochemical solar cell performance.

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“…Especially, Cu 2 ZnSnS 4 has important interest because of its catalytic activity and large optical properties. Hence, Cu 2 ZnSnS 4 has been currently used as a potential candidate in sensor applications [31]. g-C 3 N 4 as a carbon-nitrogen based nanomaterial has currently attracted important interest owing to biocompatibility, specific surface area, low cytotoxicity, and chemical inertness.…”

Section: Introductionmentioning

confidence: 99%

Sensitive sandwich-type voltammetric immunosensor for breast cancer biomarker HER2 detection based on gold nanoparticles decorated Cu-MOF and Cu2ZnSnS4 NPs/Pt/g-C3N4 composite

Yola

2021

Microchim Acta

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A sandwich-type sensitive voltammetric immunosensor for breast cancer biomarker human epidermal growth factor receptor 2 (HER2) detection was prepared. The electrochemical immunosensor was developed based on gold nanoparticles decorated copper-organic framework (AuNPs/Cu-MOF) and quaternary chalcogenide with platinum-doped graphitic carbon nitride (g-C 3 N 4 ). Cu 2 ZnSnS 4 nanoparticle (CZTS NP) quaternary chalcogenide with platinum (Pt)-doped g-C 3 N 4 composite (Pt/g-C 3 N 4 ) was tagged as CZTS NPs/Pt/g-C 3 N 4 . AuNPs/Cu-MOF composite was successfully synthesized by amidation reaction between AuNPs functionalized with amino group and Cu-MOFs containing carboxylic acid. After the conjugations of primer HER2 antibody and antigen HER2 protein to AuNPs/Cu-MOF as sensor platform, CZTS NPs/Pt/g-C 3 N 4 composite was prepared by one-pot hydrothermal method. After immune reaction of 30 min, the prepared HER2 immunosensor was characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), x-ray diffraction (XRD) method, x-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). The developed immunosensor showed high sensitivity with a detection limit of 3.00 fg mL −1 . Additional properties of the voltammetric immunosensor are high selectivity, stability, reproducibility, and reusability.

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Electrophoretic behavior of solvothermal synthesized anion replaced Cu2ZnSn(SxSe1-x)4 films for photoelectrochemical water splitting

Cited by 16 publications

References 56 publications

Experimental and Theoretical Study into Interface Structure and Band Alignment of the Cu₂Zn_1–xCd_xSnS₄ Heterointerface for Photovoltaic Applications

Experimental and Theoretical Study into Interface Structure and Band Alignment of the Cu₂Zn_1–xCd_xSnS₄ Heterointerface for Photovoltaic Applications

Investigating the Role of Selenium-Ion Concentration on Optoelectronic Properties of the Cu₂ZnSn(S_1–xSe_x)₄ Thin Films

Sensitive sandwich-type voltammetric immunosensor for breast cancer biomarker HER2 detection based on gold nanoparticles decorated Cu-MOF and Cu2ZnSnS4 NPs/Pt/g-C3N4 composite

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Electrophoretic behavior of solvothermal synthesized anion replaced Cu2ZnSn(SxSe1-x)4 films for photoelectrochemical water splitting

Cited by 16 publications

References 56 publications

Experimental and Theoretical Study into Interface Structure and Band Alignment of the Cu2Zn1–xCdxSnS4 Heterointerface for Photovoltaic Applications

Experimental and Theoretical Study into Interface Structure and Band Alignment of the Cu2Zn1–xCdxSnS4 Heterointerface for Photovoltaic Applications

Investigating the Role of Selenium-Ion Concentration on Optoelectronic Properties of the Cu2ZnSn(S1–xSex)4 Thin Films

Sensitive sandwich-type voltammetric immunosensor for breast cancer biomarker HER2 detection based on gold nanoparticles decorated Cu-MOF and Cu2ZnSnS4 NPs/Pt/g-C3N4 composite

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Experimental and Theoretical Study into Interface Structure and Band Alignment of the Cu₂Zn_1–xCd_xSnS₄ Heterointerface for Photovoltaic Applications

Experimental and Theoretical Study into Interface Structure and Band Alignment of the Cu₂Zn_1–xCd_xSnS₄ Heterointerface for Photovoltaic Applications

Investigating the Role of Selenium-Ion Concentration on Optoelectronic Properties of the Cu₂ZnSn(S_1–xSe_x)₄ Thin Films