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Selenide effect for oxidation stability of the organic solvent-free copper sulfide Nano-particles and its organic photodiode application.

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Title: Selenide effect for oxidation stability of the organic solvent-free copper sulfide Nano-particles and its organic photodiode application.
Authors: Jang, Woongsik1 (AUTHOR), Kwon, Young-Tae1,2 (AUTHOR), Lim, Hyo-Ryoung2 (AUTHOR), Choa, Yong-Ho1,2 (AUTHOR) choa15@hanyang.ac.kr, Wang, Dong Hwan1 (AUTHOR) king0401@cau.ac.kr
Source: Applied Surface Science. Aug2019, Vol. 484, p1253-1262. 10p.
Subjects: Copper sulfide, P-type semiconductors, Optoelectronic devices, Selenides, Oxidation, Potential energy
Abstract: The development of copper chalcogenide nanomaterials has shown a potential for advanced energy application, because copper chalcogenide are p-type semiconductors with high hole concentration. In this study, copper sulfide (CuS) was synthesized and alloyed with Se via a water-based method without the use of organic solvent. We demonstrated that Se alloying to CuS nano-particles (NPs) could improve oxidation stability of dispersion in aqueous solution. Through this, the NPs were integrated with poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) into a simple mixing strategy, and used as a hole transporting materials with PEDOT:PSS for organic photodiodes (OPDs). OPD device with NPs showed suppressed dark current and remarkably enhanced detectivity in all wavelength regions due to formation of electron barrier compared to pristine PEDOT:PSS device. Moreover, when exposed to signal pulses, the photocurrent is improved, and the noise current is suppressed for the OPD with NPs. Therefore, incorporating stable copper chalcogenide NPs can improve performance, leading to cost-effective optoelectronic devices. Unlabelled Image • Se doped CuS NPs were synthesized in organic solvent-free system. • Se doping protected CuS NPs from surface oxidation was analyzed by Raman and XPS. • Dark currents were dramatically suppressed by electron barrier based on Se doped CuS NPs. • Signal current and noise current in OPD devices were investigated via real-time recording. [ABSTRACT FROM AUTHOR]
Copyright of Applied Surface Science is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 139234661
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PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Selenide effect for oxidation stability of the organic solvent-free copper sulfide Nano-particles and its organic photodiode application.
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  Data: <searchLink fieldCode="AR" term="%22Jang%2C+Woongsik%22">Jang, Woongsik</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kwon%2C+Young-Tae%22">Kwon, Young-Tae</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lim%2C+Hyo-Ryoung%22">Lim, Hyo-Ryoung</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Choa%2C+Yong-Ho%22">Choa, Yong-Ho</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> choa15@hanyang.ac.kr</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Dong+Hwan%22">Wang, Dong Hwan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> king0401@cau.ac.kr</i>
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  Data: <searchLink fieldCode="JN" term="%22Applied+Surface+Science%22">Applied Surface Science</searchLink>. Aug2019, Vol. 484, p1253-1262. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Copper+sulfide%22">Copper sulfide</searchLink><br /><searchLink fieldCode="DE" term="%22P-type+semiconductors%22">P-type semiconductors</searchLink><br /><searchLink fieldCode="DE" term="%22Optoelectronic+devices%22">Optoelectronic devices</searchLink><br /><searchLink fieldCode="DE" term="%22Selenides%22">Selenides</searchLink><br /><searchLink fieldCode="DE" term="%22Oxidation%22">Oxidation</searchLink><br /><searchLink fieldCode="DE" term="%22Potential+energy%22">Potential energy</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The development of copper chalcogenide nanomaterials has shown a potential for advanced energy application, because copper chalcogenide are p-type semiconductors with high hole concentration. In this study, copper sulfide (CuS) was synthesized and alloyed with Se via a water-based method without the use of organic solvent. We demonstrated that Se alloying to CuS nano-particles (NPs) could improve oxidation stability of dispersion in aqueous solution. Through this, the NPs were integrated with poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) into a simple mixing strategy, and used as a hole transporting materials with PEDOT:PSS for organic photodiodes (OPDs). OPD device with NPs showed suppressed dark current and remarkably enhanced detectivity in all wavelength regions due to formation of electron barrier compared to pristine PEDOT:PSS device. Moreover, when exposed to signal pulses, the photocurrent is improved, and the noise current is suppressed for the OPD with NPs. Therefore, incorporating stable copper chalcogenide NPs can improve performance, leading to cost-effective optoelectronic devices. Unlabelled Image • Se doped CuS NPs were synthesized in organic solvent-free system. • Se doping protected CuS NPs from surface oxidation was analyzed by Raman and XPS. • Dark currents were dramatically suppressed by electron barrier based on Se doped CuS NPs. • Signal current and noise current in OPD devices were investigated via real-time recording. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Applied Surface Science is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.apsusc.2019.04.166
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        Text: English
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        Type: general
      – SubjectFull: P-type semiconductors
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      – SubjectFull: Optoelectronic devices
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      – SubjectFull: Selenides
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      – SubjectFull: Oxidation
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      – SubjectFull: Potential energy
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      – TitleFull: Selenide effect for oxidation stability of the organic solvent-free copper sulfide Nano-particles and its organic photodiode application.
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            NameFull: Jang, Woongsik
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            NameFull: Lim, Hyo-Ryoung
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            NameFull: Choa, Yong-Ho
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            NameFull: Wang, Dong Hwan
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              Text: Aug2019
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              Y: 2019
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            – TitleFull: Applied Surface Science
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