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Meeting 2016 TMS Annual Meeting & Exhibition
Symposium Recent Advancement on Stretchable and Wearable Electronics
Presentation Title Ultrasonic Spray Printing for High-performance Flexible Organic Field-effect Transistors and Hybrid Perovskite Solar Cells
Author(s) Kai Xiao, Sanjib Das, Ming Shao, Bin Yang, Jong Keum, Ilia Ivanov, Gong Gu, Tolga Aytug, Pooran Joshi, Christopher Rouleau, David Geohegan
On-Site Speaker (Planned) Kai Xiao
Abstract Scope Ultrasonic spray-printing (USP) is one of the cost-effective roll-to-roll compatible processes for the fabrication of various thin film electronic devices. Here, flexible organic field-effect transistors (OFETs) were fabricated by the sequential USP of a dielectric layer of PVP and an active layer of TIPS-PEN on PET plastic substrates. The flexible OFETs exhibit the best mobility up to 0.35 cm2/Vs and an on/off ratio of more than 104, together with negligible current–voltage hysteresis. Moreover, high efficiency hybrid perovskite solar cells on glass substrate and flexible PET substrate were also fabricated by USP process. Perovskite films with high uniformity, crystallinity, and surface coverage were obtained in a
 single USP step. The devices on glass and flexible substrate demonstrate power conversion 
efficiency as high as 13% and 8.1%, respectively. As a result, USP is a promising method for roll-to-roll manufacturing of high-efficiency, flexible perovskite solar cells and large-area integrated flexible organic electronics.
Proceedings Inclusion? Planned: TMS Journal: Journal of Electronic Materials


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Self-sensing Ionic Polymer-metal Composite Soft Robotic Actuator Integrated with Gallium-indium Alloy
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