Justine Philippe received the master degree in Engineering of Communication Systems from the University of Valenciennes in 2012. She then joined the Silicon Microelectronics group at the Institut d’Electronique, de Microélectronique et de Nanotechnologie (IEMN) in 2012 as a Ph.D. student. Her research work mainly focuses on high frequency flexible electronics.



Research Projects

Very high frequency, mechanically flexible and performance stable integrated electronics based on SOI-CMOS transfer bonding on plastic substrates.

High frequency flexible electronics chartThe ability to realize flexible circuits integrating sensing, signal processing, and communicating capabilities is of central importance for the development of numerous nomadic applications requiring foldable, stretchable and large area electronics. A large number of these applications currently rely on organic electronics, or integrate high mobility active films on plastic foils to provide higher performance. A key challenge is however the combination of high electrical performance (i.e. millimeter wave, low noise electronics), with the mechanical flexibility required to adapt to curvilinear surfaces, in addition to high stability of these electrical performance upon deformation.

In this work, a solution has been developed, based on thinning and transfer onto plastic foil of high frequency (HF) CMOS devices initially patterned on conventional silicon-on-insulator (SOI) wafers.

  TEM cross-section of a flexible MOSFETTEM cross-section of a flexible MOSFET






Current gain H21This process enables the fabrication of high performance electronics on plastic, with n-MOSFETs featuring characteristic frequencies fT/fmax as high as 150/160GHz in addition to low noise potentialities: NFmin/Ga of 0.57/17.8dB.

Noise figures of meritNoise figures of merit







Secondly, by locating the neutral plane of the flexible system in its active layer, the relative variation of these high frequency figures-of-merit can be limited to 5% even after aggressive bending, demonstrating mechanical flexibility, high electrical performance and stability upon deformation.



Contact Information

IEMN – Cité Scientifique – Avenue Poincaré – 59652 VILLENEUVE D’ASCQ CEDEX

Office 217

Tel.: +33 320 197 914

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