Self-activated ultrahigh chemosensitivity of oxide thin film nanostructures for transparent sensors
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Tuller_Self-activated.pdf
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3.25 MB
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Author(s)
Moon, Hi Gyu
Shim, Young-Soek
Kim, Do Hong
Jeong, Hu Young
Jeong, Myoungho
Jung, Joo Young
Han, Seung Min
Kim, Jong Kyu
Kim, Jin-Sang
Park, Hyung-Ho
Date Issued
August 2012
Journal
Scientific Reports
Publisher
Nature Publishing Group
Citation
Moon, Hi Gyu, Young-Soek Shim, Do Hong Kim, Hu Young Jeong, Myoungho Jeong, Joo Young Jung, Seung Min Han, et al. “Self-Activated Ultrahigh Chemosensitivity of Oxide Thin Film Nanostructures for Transparent Sensors.” Sci. Rep. 2 (August 17, 2012).
Version
Final published version
Abstract
One of the top design priorities for semiconductor chemical sensors is developing simple, low-cost, sensitive and reliable sensors to be built in handheld devices. However, the need to implement heating elements in sensor devices, and the resulting high power consumption, remains a major obstacle for the realization of miniaturized and integrated chemoresistive thin film sensors based on metal oxides. Here we demonstrate structurally simple but extremely efficient all oxide chemoresistive sensors with ~90% transmittance at visible wavelengths. Highly effective self-activation in anisotropically self-assembled nanocolumnar tungsten oxide thin films on glass substrate with indium-tin oxide electrodes enables ultrahigh response to nitrogen dioxide and volatile organic compounds with detection limits down to parts per trillion levels and power consumption less than 0.2 microwatts. Beyond the sensing performance, high transparency at visible wavelengths creates opportunities for their use in transparent electronic circuitry and optoelectronic devices with avenues for further functional convergence.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-No Derivative Works 3.0 Unported
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DOI of Published Version
https://doi.org/10.1038/srep00588
