PEDOT:PSS decorated ZnIn2S4 for reduced recombination of photogenerated electron-hole pairs

Bo Gao; Shaonan Dong; Jiadong Liu; Mika Sillanpää

doi:10.1016/j.matlet.2018.04.076

PEDOT:PSS decorated ZnIn₂S₄ for reduced recombination of photogenerated electron-hole pairs

Bo Gao, Shaonan Dong, Jiadong Liu, Mika Sillanpää

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

13 Citations (Scopus)

Abstract

The modification of ZnIn₂S₄ with poly(3,4-ethylenedioxythiophene) (PEDOT) was investigated by coupling the hole conductor property of PEDOT. After 180 min reaction, the total organic carbon (TOC) removal rates of 38%, 45%, 42% and 31% were achieved by 0.02, 0.05, 0.1 and 0.2 mL PEDOT modified ZIS, respectively, which were higher than pristine ZIS of 24%. The obvious quenching of fluorescence was observed for PEDOT-ZIS sample, suggesting that the recombination of electron-hole pairs was suppressed comparing with pristine ZIS. The electrochemical impedance spectroscopy (EIS) results implied the separation and transfer of photo-generated electrons and holes was much easier over PEDOT-ZIS hybrid photocatalyst.

Original language	English
Pages (from-to)	64-66
Number of pages	3
Journal	Materials Letters
Volume	224
DOIs	https://doi.org/10.1016/j.matlet.2018.04.076
Publication status	Published - 1 Aug 2018
Externally published	Yes

Keywords

Charge transfer
FTIR
Polymers
Recombination
Semiconductors

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.matlet.2018.04.076

Cite this

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title = "PEDOT:PSS decorated ZnIn2S4 for reduced recombination of photogenerated electron-hole pairs",

abstract = "The modification of ZnIn2S4 with poly(3,4-ethylenedioxythiophene) (PEDOT) was investigated by coupling the hole conductor property of PEDOT. After 180 min reaction, the total organic carbon (TOC) removal rates of 38%, 45%, 42% and 31% were achieved by 0.02, 0.05, 0.1 and 0.2 mL PEDOT modified ZIS, respectively, which were higher than pristine ZIS of 24%. The obvious quenching of fluorescence was observed for PEDOT-ZIS sample, suggesting that the recombination of electron-hole pairs was suppressed comparing with pristine ZIS. The electrochemical impedance spectroscopy (EIS) results implied the separation and transfer of photo-generated electrons and holes was much easier over PEDOT-ZIS hybrid photocatalyst.",

keywords = "Charge transfer, FTIR, Polymers, Recombination, Semiconductors",

author = "Bo Gao and Shaonan Dong and Jiadong Liu and Mika Sillanp{\"a}{\"a}",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2018",

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doi = "10.1016/j.matlet.2018.04.076",

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T1 - PEDOT:PSS decorated ZnIn2S4 for reduced recombination of photogenerated electron-hole pairs

AU - Gao, Bo

AU - Dong, Shaonan

AU - Liu, Jiadong

AU - Sillanpää, Mika

PY - 2018/8/1

Y1 - 2018/8/1

N2 - The modification of ZnIn2S4 with poly(3,4-ethylenedioxythiophene) (PEDOT) was investigated by coupling the hole conductor property of PEDOT. After 180 min reaction, the total organic carbon (TOC) removal rates of 38%, 45%, 42% and 31% were achieved by 0.02, 0.05, 0.1 and 0.2 mL PEDOT modified ZIS, respectively, which were higher than pristine ZIS of 24%. The obvious quenching of fluorescence was observed for PEDOT-ZIS sample, suggesting that the recombination of electron-hole pairs was suppressed comparing with pristine ZIS. The electrochemical impedance spectroscopy (EIS) results implied the separation and transfer of photo-generated electrons and holes was much easier over PEDOT-ZIS hybrid photocatalyst.

AB - The modification of ZnIn2S4 with poly(3,4-ethylenedioxythiophene) (PEDOT) was investigated by coupling the hole conductor property of PEDOT. After 180 min reaction, the total organic carbon (TOC) removal rates of 38%, 45%, 42% and 31% were achieved by 0.02, 0.05, 0.1 and 0.2 mL PEDOT modified ZIS, respectively, which were higher than pristine ZIS of 24%. The obvious quenching of fluorescence was observed for PEDOT-ZIS sample, suggesting that the recombination of electron-hole pairs was suppressed comparing with pristine ZIS. The electrochemical impedance spectroscopy (EIS) results implied the separation and transfer of photo-generated electrons and holes was much easier over PEDOT-ZIS hybrid photocatalyst.

KW - Charge transfer

KW - FTIR

KW - Polymers

KW - Recombination

KW - Semiconductors

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