Welcome to the GOPOWER / GALLIA research consortium

Accelerating the demonstration of Gallium Oxide’s outstanding potential for Energy application

The very concrete way to reach the target of Energy efficiency is to turn to more efficient power electronics. Increasing power density and power conversion optimization for CO2 emission reduction are key (Yole,Ltd). For Green Power Electronics and Energy saving advanced materials are one of the Key Enabling Technologies (KETs). Si-based device performances degrade badly at high temperatures, restricting their use for high power electronics. As an alternative there is a new generation of Wide Band Gap (WBG) semiconductors that have the capability to operate at higher temperatures, switching frequencies and voltages. This characteristic not only results in less losses but enables significantly reduced volume of power components due to decreased cooling requirements and smaller passive components, contributing to overall lower system cost. WBG integration into Energy application areas will result in energy savings estimated contribution into the ClimateAction (ReportORNL/TM-2017/702 ). Two major WBG materials with this potential which already made significant advances in power electronics are SiC and GaN, covering low and mid voltage (<3kV) range.

Exceeding them are the ultra wide band gap (UWBG) semiconductors (Eg>4eV), which should bring additional advantages with ability of sustaining very high voltages with low losses for switching, high temperature operation, necessary in application for grid, data centers and trains, electrical vehicles, aircrafts and ships. Among UWBG materials Ga2O3 has become a new challenger.

GOPOWER / GALLIA research consortium - Consortium

Partners

Collaborators

GOPOWER / GALLIA research consortium - Participants

GOPOWER / GALLIA research consortium - Research

Material Elaboration

Ga2O3 epilayers growth

Thermodynamic Analysis

Thermodynamic analysis of point defects

Optical characterizations

Optical transmittance, reflectance, diffusion
&
Photoluminescence spectroscopy (PL)

Electrical Transport properties

Electrical transport properties abstract

Electronic Defects Study

Deep Electronic Defect identification

Advance compositional and morphological charcterizations

GOPOWER / GALLIA research consortium - Highlights

Bipolar self doping in Zinc galaite
The spinel group is a growing family of materials with general formulation AB2X4 (the X…
p-type Gallium Oxide thin films
While there are several n-type transparent semiconductor oxides (TSO) for optoelectronic applications (e.g. LEDs, solar…
Giant Bulk Photovoltaic Effect in Solar Cell Architectures
The use of ultra-wide bandgap transparent conducting beta gallium oxide (b-Ga2O3) thin films as electrodes…
Ultra-high critical electric field of 13.2 MV/cm for Zn-doped p-type b- Ga2O3
  Which the actual critical electrical field of the ultra-wide bandgap semiconductor b-Ga2O3 is? Even…

GOPOWER / GALLIA research consortium - Publications

Chikoidze,Ekaterine and Sartel,Corinne and Yamano,Hayate and Chi,Zeyu and Bouchez,Guillaume and Jomard,François and Sallet,Vincent and Guillot,Gérard and Boukheddaden,Kamel and Pérez-Tomás,Amador and Tchelidze,Tamar and Dumont,Yves

(2022) -

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Sushrut Modak, Alfons Schulte, Corinne Sartel, Vincent Sallet, Yves Dumont, Ekaterine Chikoidze, Xinyi Xia, Fan Ren, Stephen J. Pearton, Arie Ruzin, and Leonid Chernyak

(2022) -

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Zeyu Chi, Jacob J. Asher, Michael R. Jennings, Ekaterine Chikoidze, and Amador Pérez-Tomás

(2022) -

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Sushrut Modak, Leonid Chernyak, Alfons Schulte, Corinne Sartel, Vincent Sallet, Yves Dumont, Ekaterine Chikoidze, Xinyi Xia, Fan Ren, Stephen J. Pearton, Arie Ruzin, Denis M. Zhigunov, Sergey S. Kosolobov, and Vladimir P. Drachev

(2022) -

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Z. Chi, F.G. Tarntair, M. Frégnaux, W.Y. Wu, C. Sartel, I. Madaci, P. Chapon, V. Sallet, Y. Dumont, A. Pérez-Tomás, R.H. Horng, E. Chikoidze

(2021) -

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Ekaterine Chikoidze, Corinne Sartel, Ismail Madaci, Hagar Mohamed, Christele Vilar, Belén Ballesteros, Francisco Belarre, Elena del Corro, Pablo Vales-Castro, Guillaume Sauthier, Lijie Li, Mike Jennings, Vincent Sallet, Yves Dumont, and Amador Pérez-Tomás

(2020) -

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E. Chikoidze, T. Tchelidze, C. Sartel, Z. Chi, R. Kabouche, I. Madaci, C. Rubio, H. Mohamed, V. Sallet, F. Medjdoub, A. Perez-Tomas, and Y. Dumont

(2020) -

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Thanh Tung Huynh, Ekaterine Chikoidze, Curtis P. Irvine, Muhammad Zakria, Yves Dumont, Ferechteh H. Teherani, Eric V. Sandana, Philippe Bove, David J. Rogers, Matthew R. Phillips, and Cuong Ton-That

(2020) -

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E. Chikoidze and D.J. Rogers and F.H. Teherani and C. Rubio and G. Sauthier and H.J. Von Bardeleben and T. Tchelidze and C. Ton-That and A. Fellous and P. Bove and E.V. Sandana and Y. Dumont and A. Perez-Tomas

(2019) -

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Ekaterine Chikoidze, Corinne Sartel, Hagar Mohamed, Ismail Madaci, Tamar Tchelidze, Mircea Modreanu, Pablo Vales-Castro, Carles Rubio, Christophe Arnold, Vincent Sallet ,Yves Dumont, and Amador Perez-Tomas

(2019) -

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A. Pérez-Tomás, E. Chikoidze, Y. Dumont, M.R. Jennings, S.O. Russell, P. Vales-Castro, G. Catalan, M. Lira-Cantú, C. Ton –That, F.H. Teherani, V.E. Sandana, P. Bove, and D.J. Rogers

(2019) -

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Amador Pérez-Tomás and Ekaterine Chikoidze and Michael R. Jennings and Stephen A. O. Russell and Ferechteh H. Teherani and Philippe Bove and Eric V. Sandana and David J. Rogers

(2018) -

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Ekaterine Chikoidze, Adel Fellous, Amador Perez-Tomas, Guillaume Sauthier, Tamar Tchelidze, Cuong Ton-That, Tung Thanh Huynh, Matthew Phillips, Stephen Russell, Mike Jennings, Bruno Berini, Francois Jomard, and Yves Dumont

(2017) -

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Join Us

We are continuously looking for motivated and talented students.

If you think that your CV could match the group activities, don’t hesitate to contact us.

GOPOWER / GALLIA research consortium - News

The 1st National workshop “Gallium Oxide ultra wide band gap material for energy electronics”
Special Issue “Wide-Band-Gap Semiconductors for Energy and Electronics”
wide-band-gap semiconductors ultra wide-band-gap energy power electronics optoelectronics transparent electronics deep UV diodes transistors solar…
Symposium F at E-MRS 2022 Fall Meeting,2022

Ultra wide-band-gap semiconductors for energy and electronics (UWBG2E)