Letter abstract
Nature Materials 6, 413 - 417 (2007)
Published online: 29 April 2007 | doi:10.1038/nmat1903
Subject Categories: Polymers | Electronic materials
A large-area wireless power-transmission sheet using printed organic transistors and plastic MEMS switches
Tsuyoshi Sekitani1, Makoto Takamiya2, Yoshiaki Noguchi1, Shintaro Nakano1, Yusaku Kato1, Takayasu Sakurai3 & Takao Someya1
The electronics fields face serious problems associated with electric power; these include the development of ecologically friendly power-generation systems and ultralow-power-consuming circuits. Moreover, there is a demand for developing new power-transmission methods in the imminent era of ambient electronics, in which a multitude of electronic devices such as sensor networks will be used in our daily life to enhance security, safety and convenience. We constructed a sheet-type wireless power-transmission system by using state-of-the-art printing technologies using advanced electronic functional inks. This became possible owing to recent progress in organic semiconductor technologies; the diversity of chemical syntheses and processes on organic materials has led to a new class of organic semiconductors, dielectric layers and metals with excellent electronic functionalities1, 2, 3, 4, 5. The new system directly drives electronic devices by transmitting power of the order of tens of watts without connectors, thereby providing an easy-to-use and reliable power source. As all of the components are manufactured on plastic films, it is easy to place the wireless power-transmission sheet over desks, floors, walls and any other location imaginable.
- Quantum-Phase Electronics Center, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
- VLSI Design and Education Center, The University of Tokyo, Tokyo 153-8505, Japan
- Center for Collaborative Research, The University of Tokyo, Tokyo 153-8904, Japan
Correspondence to: Takao Someya1 e-mail: someya@ap.t.u-tokyo.ac.jp
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