Current density enhancement in ZnO/CdSe photoelectrochemical cells in the presence of a charge separating SnO2 nanoparticles interfacing-layer

Supriya A. Patil; Dipak V. Shinde; Sambhaji S. Bhande; Vijaykumar V. Jadhav; Tran N. Huan; Rajaram S. Mane; Sung Hwan Han

doi:10.1039/c3dt51149a

Current density enhancement in ZnO/CdSe photoelectrochemical cells in the presence of a charge separating SnO₂ nanoparticles interfacing-layer

Supriya A. Patil, Dipak V. Shinde, Sambhaji S. Bhande, Vijaykumar V. Jadhav, Tran N. Huan, Rajaram S. Mane^*, Sung Hwan Han

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Photoelectrochemical cells (PECs) of ZnO/CdSe decorated with a charge separating SnO₂ nanoparticles (NPs) layer of various thicknesses are prepared and characterized by using scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), UV-visible absorption, energy dispersive X-ray analysis spectroscopy (EDX) and incident photon-to-current conversion efficiency (IPCE) measurements. A uniform coverage of the SnO₂ NPs layer over ZnO/CdSe electrode surface is evidenced. The EDX elemental mapping analysis of the ZnO/CdSe/SnO₂ PECs demonstrates the presence of Sn and O over the surface. A remarkable improvement in the light harvesting efficiency confirmed from the IPCE measurement, supports an enhancement in current density in the current density–voltage measurement due to increased electron transport and smaller charge recombination. Moreover, these observations are corroborated with the EIS measurement as a cell with SnO₂ reveals a reduced charge transfer resistance due to which the power conversion efficiency is increased from 2.20 to 3.41% i.e. 55% compared to the pristine ZnO/CdSe PEC.

Original language	English
Pages (from-to)	13065-13070
Number of pages	6
Journal	Journal of the Chemical Society. Dalton Transactions
Volume	42
Issue number	36
DOIs	https://doi.org/10.1039/c3dt51149a
State	Published - 20 Aug 2013
Externally published	Yes

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title = "Current density enhancement in ZnO/CdSe photoelectrochemical cells in the presence of a charge separating SnO2 nanoparticles interfacing-layer",

abstract = "Photoelectrochemical cells (PECs) of ZnO/CdSe decorated with a charge separating SnO2 nanoparticles (NPs) layer of various thicknesses are prepared and characterized by using scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), UV-visible absorption, energy dispersive X-ray analysis spectroscopy (EDX) and incident photon-to-current conversion efficiency (IPCE) measurements. A uniform coverage of the SnO2 NPs layer over ZnO/CdSe electrode surface is evidenced. The EDX elemental mapping analysis of the ZnO/CdSe/SnO2 PECs demonstrates the presence of Sn and O over the surface. A remarkable improvement in the light harvesting efficiency confirmed from the IPCE measurement, supports an enhancement in current density in the current density–voltage measurement due to increased electron transport and smaller charge recombination. Moreover, these observations are corroborated with the EIS measurement as a cell with SnO2 reveals a reduced charge transfer resistance due to which the power conversion efficiency is increased from 2.20 to 3.41% i.e. 55% compared to the pristine ZnO/CdSe PEC.",

author = "Patil, {Supriya A.} and Shinde, {Dipak V.} and Bhande, {Sambhaji S.} and Jadhav, {Vijaykumar V.} and Huan, {Tran N.} and Mane, {Rajaram S.} and Han, {Sung Hwan}",

year = "2013",

month = aug,

day = "20",

doi = "10.1039/c3dt51149a",

language = "英语",

volume = "42",

pages = "13065--13070",

journal = "Journal of the Chemical Society. Dalton Transactions",

issn = "1477-9226",

publisher = "Royal Society of Chemistry",

number = "36",

}

Current density enhancement in ZnO/CdSe photoelectrochemical cells in the presence of a charge separating SnO₂ nanoparticles interfacing-layer. / Patil, Supriya A.; Shinde, Dipak V.; Bhande, Sambhaji S. et al.
In: Journal of the Chemical Society. Dalton Transactions, Vol. 42, No. 36, 20.08.2013, p. 13065-13070.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Current density enhancement in ZnO/CdSe photoelectrochemical cells in the presence of a charge separating SnO2 nanoparticles interfacing-layer

AU - Patil, Supriya A.

AU - Shinde, Dipak V.

AU - Bhande, Sambhaji S.

AU - Jadhav, Vijaykumar V.

AU - Huan, Tran N.

AU - Mane, Rajaram S.

AU - Han, Sung Hwan

PY - 2013/8/20

Y1 - 2013/8/20

N2 - Photoelectrochemical cells (PECs) of ZnO/CdSe decorated with a charge separating SnO2 nanoparticles (NPs) layer of various thicknesses are prepared and characterized by using scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), UV-visible absorption, energy dispersive X-ray analysis spectroscopy (EDX) and incident photon-to-current conversion efficiency (IPCE) measurements. A uniform coverage of the SnO2 NPs layer over ZnO/CdSe electrode surface is evidenced. The EDX elemental mapping analysis of the ZnO/CdSe/SnO2 PECs demonstrates the presence of Sn and O over the surface. A remarkable improvement in the light harvesting efficiency confirmed from the IPCE measurement, supports an enhancement in current density in the current density–voltage measurement due to increased electron transport and smaller charge recombination. Moreover, these observations are corroborated with the EIS measurement as a cell with SnO2 reveals a reduced charge transfer resistance due to which the power conversion efficiency is increased from 2.20 to 3.41% i.e. 55% compared to the pristine ZnO/CdSe PEC.

AB - Photoelectrochemical cells (PECs) of ZnO/CdSe decorated with a charge separating SnO2 nanoparticles (NPs) layer of various thicknesses are prepared and characterized by using scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), UV-visible absorption, energy dispersive X-ray analysis spectroscopy (EDX) and incident photon-to-current conversion efficiency (IPCE) measurements. A uniform coverage of the SnO2 NPs layer over ZnO/CdSe electrode surface is evidenced. The EDX elemental mapping analysis of the ZnO/CdSe/SnO2 PECs demonstrates the presence of Sn and O over the surface. A remarkable improvement in the light harvesting efficiency confirmed from the IPCE measurement, supports an enhancement in current density in the current density–voltage measurement due to increased electron transport and smaller charge recombination. Moreover, these observations are corroborated with the EIS measurement as a cell with SnO2 reveals a reduced charge transfer resistance due to which the power conversion efficiency is increased from 2.20 to 3.41% i.e. 55% compared to the pristine ZnO/CdSe PEC.

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DO - 10.1039/c3dt51149a

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JF - Journal of the Chemical Society. Dalton Transactions

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Current density enhancement in ZnO/CdSe photoelectrochemical cells in the presence of a charge separating SnO₂ nanoparticles interfacing-layer

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