Thin and Flexible Organic Electronic Devices for Wearable or Implantable Electronics

Dr. Peter Zalar Zalar

Project Researcher, Department of Electric and Electronic Engineering

The University of Tokyo


ピーター・ザーラー 氏


工学系研究科電気系工学専攻 特任研究員



Large area thin-film electronic devices fabricated on rigid substrates, such as glass or transparent polymers, has lately been a major research focus for both industry and academia. However, the demand for flexible and stretchable devices is increasing due to the popularity of wearable or implantable devices for consumer electronics or medical applications. These types of devices necessitate the simultaneous combination of conformability, biocompatibility, ruggedness, and lightness over a large area. To this end, organic semiconductors offer a low-cost, flexible, lightweight, and chemically tunable alternative to inorganic semiconductors. Recently, researchers have demonstrated a multitude of basic electronic elements on 1 µm thick substrates, including thin-film transistors, light-emitting diodes, photovoltaics, and photodetectors - all based on organic semiconductors. Use of such thin substrates enables highly conformable and light devices that allowed us to envision and realize diverse applications that range from e-textiles to medical monitoring and analytical devices. In the near future, we believe that organic electronic devices integrated on thin substrates will enable many new and exciting electronic devices, especially in the fields of e-textiles and biomedicine.




Peter Zalar obtained his Ph.D. degree in materials chemistry from the University of California, Santa Barbara (UCSB) in 2014 under the supervision of Professor Thuc-Quyen Nguyen. His doctoral research focused on the fundamental characterization of the optical and electronic properties of novel -conjugated polymers. Among his achievements was the introduction of a novel molecular doping method based on Lewis acid modification of Lewis basic copolymers. In addition, he also studied the charge transport and recombination in an emerging class of organic photovoltaic cells. In the fall of 2014, he joined the group of Professor Takao Someya at the University of Tokyo as a project researcher in the JST ERATO Someya Bio-Harmonized Electronics Project. His current research focuses on the development of optoelectronic devices based on organic semiconductors for electronic skins and medical monitoring.

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