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BPN747: Fully Printed High Performance Flexible Electronics

Project ID BPN747
Start Date Mon 2014-Feb-03 16:20:50
Last Updated Mon 2014-Feb-03 19:06:53
Abstract A flexible sensor network able to conform to nonplanar surfaces is very important for such applications as prosthetics and large area touch panels. In many of these applications, an extremely large coverage area is necessary, making traditional fabrication methods such as photolithography and even shadow mask technology unfeasible approaches. In this project, we aim to solve this problem by creating flexible sensor networks via gravure printing technology. Carbon nanotubes are solution deposited onto a polyethylene terephthalate (PET) substrate upon which source/drain, gate dielectric, and gate metal are aligned and printed on using a plate to roll reverse gravure printer. Using this method, which can be easily transferred to a large scale roll to roll printing setup, we are able to achieve high performance thin film transistors (TFT) with mobilities of up to 9 cm2/Vs, the highest recorded for a fully printed TFT. Additionally, we are able to obtain yields of over 90% in an ambient environment outside of a clean room. Various sensors can then be integrated into the active matrix backplane to achieve a fully printed flexible sensor network.
Status New
Funding Source NSF
IAB Research Area Physical Sensors & Devices
Researcher(s) Kevin Chen
Advisor(s) Ali Javey
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