All-printed diode operating at 1.6 GHz

作者：Sani Negar; Robertsson Mats; Cooper Philip; Wang Xin; Svensson Magnus; Ersman Peter Andersson; Norberg Petronella; Nilsson Marie; Nilsson David; Liu Xianjie; Hesselbom Hjalmar; Akesso Laurent; Fahlman Mats; Crispin Xavier; Engquist Isak; Berggren Magnus^*; Gustafsson Goran

来源：Proceedings of the National Academy of Sciences of the United States of America, 2014, 111(33): 11943-11948.

DOI：10.1073/pnas.1401676111

• UHF
• silicon particle

Printed electronics are considered for wireless electronic tags and sensors within the future Internet-of-things (IoT) concept. As a consequence of the low charge carrier mobility of present printable organic and inorganic semiconductors, the operational frequency of printed rectifiers is not high enough to enable direct communication and powering between mobile phones and 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 and NbSi2 particles, is manufactured on a flexible substrate at low temperature and 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 and 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.

• 出版日期2014-8-19