Inkjet-Printed Imbedded Graphene Nanoplatelet/Zinc Oxide Bulk Heterojunctions Nanocomposite Films for Ultraviolet Photodetection

doi:10.1021/acsomega.9b03173

Title: Inkjet-Printed Imbedded Graphene Nanoplatelet/Zinc Oxide Bulk Heterojunctions Nanocomposite Films for Ultraviolet Photodetection

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Abstract

A ZnO sol–gel precursor (ZnOPr) and graphene nanoplatelets (GnPs) are mixed into a composite ink for inkjet printing photodetectors with bulk heterojunctions of ZnO/GnP on a heated SiO₂/Si substrate. Heating of the SiO₂/Si wafers at ~50 °C was found optimal to prevent segregated droplets on the hydrophobic surface of the SiO₂/Si substrate during printing. After printing the ZnO/GnP channels, thermal annealing at 350 °C for 2 h was performed for crystallization of ZnO and formation of the ZnO/GnP heterojunctions. The GnP concentration was varied from 0, 5, 20, and 30 mM to evaluate optimal formation of the ZnO/GnP bulk heterojunction nanocomposites based on ultraviolet photoresponse performance. The best performance was observed at the 20 mM GnP concentration with the photoresponsivity reaching 2.2 A/W at an incident ultraviolet power of 2.2 μW and a 5 V bias. This photoresponsivity is an order of magnitude better than the previously reported counterparts, including 0.13 mA/W for dropcasted ZnO-graphite composites and much higher than 0.5 A/W for aerosol printed ZnO. The improved performance is attributed to the ZnO/GnP bulk heterojunctions with improved interfaces that enable efficient exciton dissociation and the charge transport. The developed inkjet printing of sol–gel composite inks approach can be scalablemore »« less

Authors:

^[1]; Gong, Maogang ^[1]; Corbin, Alex ^[2]; Ewing, Dan ^[3]; Tramble, Ashley ^[3]; Wu, Judy ^[1]

Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045, United States
Shawnee Mission East High School, 7500 Mission Road, Prairie Village, Kansas 66208, United States
Department of Energy’s National Security Campus, Kansas City, Missouri 64147, United States

Publication Date:: 2019-12-17

Research Org.:: Univ. of Kansas, Lawrence, KS (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

OSTI Identifier:: 1579765

Alternate Identifier(s):: OSTI ID: 1580693

Grant/Contract Number:: NA0002839

Resource Type:: Published Article

Journal Name:: ACS Omega

Additional Journal Information:: Journal Name: ACS Omega Journal Volume: 4 Journal Issue: 27; Journal ID: ISSN 2470-1343

Publisher:: American Chemical Society

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats


                    Cook, Brent, Gong, Maogang, Corbin, Alex, Ewing, Dan, Tramble, Ashley, and Wu, Judy. Inkjet-Printed Imbedded Graphene Nanoplatelet/Zinc Oxide Bulk Heterojunctions Nanocomposite Films for Ultraviolet Photodetection.  United States: N. p., 2019. 
        Web.  doi:10.1021/acsomega.9b03173.

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                    Cook, Brent, Gong, Maogang, Corbin, Alex, Ewing, Dan, Tramble, Ashley, & Wu, Judy. Inkjet-Printed Imbedded Graphene Nanoplatelet/Zinc Oxide Bulk Heterojunctions Nanocomposite Films for Ultraviolet Photodetection.  United States.  doi:10.1021/acsomega.9b03173.

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                    Cook, Brent, Gong, Maogang, Corbin, Alex, Ewing, Dan, Tramble, Ashley, and Wu, Judy. Tue .  
        "Inkjet-Printed Imbedded Graphene Nanoplatelet/Zinc Oxide Bulk Heterojunctions Nanocomposite Films for Ultraviolet Photodetection".  United States.  doi:10.1021/acsomega.9b03173.

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@article{osti_1579765,

  title        = {Inkjet-Printed Imbedded Graphene Nanoplatelet/Zinc Oxide Bulk Heterojunctions Nanocomposite Films for Ultraviolet Photodetection},

  author       = {Cook, Brent and Gong, Maogang and Corbin, Alex and Ewing, Dan and Tramble, Ashley and Wu, Judy},

  abstractNote = {A ZnO sol–gel precursor (ZnOPr) and graphene nanoplatelets (GnPs) are mixed into a composite ink for inkjet printing photodetectors with bulk heterojunctions of ZnO/GnP on a heated SiO2/Si substrate. Heating of the SiO2/Si wafers at ~50 °C was found optimal to prevent segregated droplets on the hydrophobic surface of the SiO2/Si substrate during printing. After printing the ZnO/GnP channels, thermal annealing at 350 °C for 2 h was performed for crystallization of ZnO and formation of the ZnO/GnP heterojunctions. The GnP concentration was varied from 0, 5, 20, and 30 mM to evaluate optimal formation of the ZnO/GnP bulk heterojunction nanocomposites based on ultraviolet photoresponse performance. The best performance was observed at the 20 mM GnP concentration with the photoresponsivity reaching 2.2 A/W at an incident ultraviolet power of 2.2 μW and a 5 V bias. This photoresponsivity is an order of magnitude better than the previously reported counterparts, including 0.13 mA/W for dropcasted ZnO-graphite composites and much higher than 0.5 A/W for aerosol printed ZnO. The improved performance is attributed to the ZnO/GnP bulk heterojunctions with improved interfaces that enable efficient exciton dissociation and the charge transport. The developed inkjet printing of sol–gel composite inks approach can be scalable and low cost for practical applications.},

  doi          = {10.1021/acsomega.9b03173},

  journal      = {ACS Omega},

  number       = 27,

  volume       = 4,

  place        = {United States},

  year         = {2019},

  month        = {12}

}

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