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2014 (English)In: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, Vol. 111, p. 11343-9Article in journal (Refereed) Published
Abstract [en]
Printed electronics are considered for wireless electronic tags sensors within the future Internet-of-things (IoT) concept. As a consequence of the low charge carrier mobility of present printable organic inorganic semiconductors, the operational frequency of printed rectifiers is not high enough to enable direct communication powering between mobile phones printed e-tags. Here, we report an all-printed diode operating up to 1.6 GHz. The device, based on two stacked layers of Si NbSi2 particles, is manufactured on a flexible substrate at low temperature in ambient atmosphere. The high charge carrier mobility of the Si microparticles allows device operation to occur in the charge injection-limited regime. The asymmetry of the oxide layers in the resulting device stack leads to rectification of tunneling current. Printed diodes were combined with antennas electrochromic displays to form an all-printed e-tag. The harvested signal from a Global System for Mobile Communications mobile phone was used to update the display. Our findings demonstrate a new communication pathway for printed electronics within IoT applications._x000D_
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-31952 (URN)10.1073/pnas.1401676111 (DOI)2-s2.0-84906309042 (Scopus ID)
2017-10-242017-10-242025-04-22Bibliographically approved