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Title: Uncondensed Graphitic Carbon Nitride on Reduced Graphene Oxide for Oxygen Sensing via a Photoredox Mechanism

Authors:
 [1];  [2];  [1];  [1]; ORCiD logo [1]
  1. Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
  2. United States Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania 15236, United States; Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
Publication Date:
Research Org.:
National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1419474
Report Number(s):
NETL-PUB-21171
Journal ID: ISSN 1944-8244
Grant/Contract Number:
5 UL1 TR000005-09
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ACS Applied Materials and Interfaces
Additional Journal Information:
Journal Volume: 9; Journal Issue: 32; Journal ID: ISSN 1944-8244
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 25 ENERGY STORAGE; 36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; Photoactivation, sensors, photoredox mechanism, density functional theory

Citation Formats

Ellis, James E., Sorescu, Dan C., Burkert, Seth C., White, David L., and Star, Alexander. Uncondensed Graphitic Carbon Nitride on Reduced Graphene Oxide for Oxygen Sensing via a Photoredox Mechanism. United States: N. p., 2017. Web. doi:10.1021/acsami.7b06017.
Ellis, James E., Sorescu, Dan C., Burkert, Seth C., White, David L., & Star, Alexander. Uncondensed Graphitic Carbon Nitride on Reduced Graphene Oxide for Oxygen Sensing via a Photoredox Mechanism. United States. doi:10.1021/acsami.7b06017.
Ellis, James E., Sorescu, Dan C., Burkert, Seth C., White, David L., and Star, Alexander. 2017. "Uncondensed Graphitic Carbon Nitride on Reduced Graphene Oxide for Oxygen Sensing via a Photoredox Mechanism". United States. doi:10.1021/acsami.7b06017.
@article{osti_1419474,
title = {Uncondensed Graphitic Carbon Nitride on Reduced Graphene Oxide for Oxygen Sensing via a Photoredox Mechanism},
author = {Ellis, James E. and Sorescu, Dan C. and Burkert, Seth C. and White, David L. and Star, Alexander},
abstractNote = {},
doi = {10.1021/acsami.7b06017},
journal = {ACS Applied Materials and Interfaces},
number = 32,
volume = 9,
place = {United States},
year = 2017,
month = 8
}

Journal Article:
Free Publicly Available Full Text
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  • One of the major bottlenecks in fabricating high performance organic field effect transistors (OFETs) is a large interfacial contact barrier between metal electrodes and organic semiconductors (OSCs) which makes the charge injection inefficient. Recently, reduced graphene oxide (RGO) has been suggested as an alternative electrode material for OFETs. RGO has tunable electronic properties and its conductivity can be varied by several orders of magnitude by varying the carbon sp{sup 2} fraction. However, whether the sp{sup 2} fraction of RGO in the electrode affects the performance of the fabricated OFETs is yet to be investigated. In this study, we demonstrate thatmore » the performance of OFETs with pentacene as OSC and RGO as electrode can be continuously improved by increasing the carbon sp{sup 2} fraction of RGO. When compared to control palladium electrodes, the mobility of the OFETs shows an improvement of ∼200% for 61% sp{sup 2} fraction RGO, which further improves to ∼500% for 80% RGO electrode. Similar improvements were also observed in current on-off ratio, on-current, and transconductance. Our study suggests that, in addition to π-π interaction at RGO/pentacene interface, the tunable electronic properties of RGO electrode have a significant role in OFETs performance.« less
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