Bidirectional RFID tags on foil based on hybrid organic-oxide complementary thin film technology (original) (raw)

2012

Abstract

Today {OLAE} {RFID} tags are limited in performance. The {ORICLA} partners elaborate new {OLAE} chip technologies, based on hybrid complementary logic using p-type organic and n-type solution processed oxide semiconductors. This unique combination leads to demonstration of {OLAE} chips and tags with performance, getting close to requirements for {EPC} item level tagging. The month 18 {ORICLA} demonstrations comprise the integration of the hybrid {CMOS} process on foil {[Rockele} et al., Organic Electronics 12,1909 (2011)] and bidirectional communication (i.e. the tag can understand and talk to the reader) with uplink data rates up to 3.5 kbits/s and downlink data rates up to 21 kbits/s {[Myny} et al, {ISSCC} 2012]. These results have been demonstrated using solution processed oxides at temperatures as low as {250C.} Current work focuses in implementing these hybrid {CMOS} circuits using the new solution processed oxides developed by {EVONIK} that can go down to temperatures as low as {150C.} These low process temperatures will enable to realize the {RFID} tag on low-cost {PEN} foil. A second remaining focus of the {ORICLA} project is to increase the maximum frequency of the oxide rectifiers up to {UHF} frequencies. These frequencies allow reducing the cost of the printed antennas, which enables the path to low-cost {RFID} tags for item level tagging.

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