Publications

• Article dans une revue

Probing technique for localized thermal conductivity measurement

K. Ziouche, Z. Bougrioua, P. Lejeune, T. Lasri, Didier Leclercq

A low-cost and non-destructive measurement technique based on the combination of a temperature sensor and a heater integrated in a very sharp tip is proposed for the determination of thermal conductivity of planar materials. The thermal sensor is fabricated by means of microtechnology technique.…

Measurement Science and Technology, 2015, 26 (8), pp.087003. ⟨10.1088/0957-0233/26/8/087003⟩. ⟨hal-02906730⟩

• Article dans une revue

A planar micro thermoelectric generator with high thermal resistance

Zheng Yuan, Katir Ziouche, Zahia Bougrioua, Pascale Lejeune, Tuami Lasri, Didier Leclercq

This paper presents the modelling, design, fabrication and characterization of a planar micro thermoelectric generator (μTEG) which is able to convert waste heat into a few microwatts of electrical power. In order to get a better performance under a large variety of heat sources even if their…

Sensors and Actuators A: Physical , 2015, 221, pp.67-76. ⟨10.1016/j.sna.2014.10.026⟩. ⟨hal-02906732⟩

• Article dans une revue

Thermoelectric infrared microsensors based on a periodically suspended thermopile integrating nanostructured Ge/SiGe quantum dots superlattice

Katir Ziouche, G. Savelli, Zahia Bougrioua, D. Hauser, P. Lejeune, P.M. Michon, Tuami Lasri, Didier Leclercq

This paper presents an original integration of polycrystalline SiGe-based quantum dots superlattices (QDSL) into Thermoelectric (TE) planar infrared microsensors (μSIR) fabricated using a CMOS technology. The nanostructuration in QDSL results into a considerably reduced thermal conductivity by a…

Journal of Applied Physics, 2014, 116 (4), 043701, 7 p. ⟨10.1063/1.4891020⟩. ⟨hal-01055042⟩

• Article dans une revue

Structural and photoluminescence studies of highly crystalline un-annealed ZnO nanorods arrays synthesized by hydrothermal technique

Anisha Gokarna, Je-Hyung Kim, Floriane Leroy, Gilles Patriarche, Pascal Roussel, Z. Bougrioua, Christophe Rodriguez, El Hadj Dogheche, Yong-Hoon Cho

To investigate the effect of a seed layer on the growth and properties of ZnO nanorods using hydrothermal technique, various thickness of sputter deposited ZnO thin films were used. The changes in crystallinity, orientation, and optical properties of the nanorods synthesized on these ZnO thin films…

Journal of Luminescence, 2013, 144, pp.234-240. ⟨10.1016/j.jlumin.2013.07.031⟩. ⟨hal-00871953⟩

• Article dans une revue

On the origin of basal stacking faults in nonpolar wurtzite films epitaxially grown on sapphire substrates

Philippe Vennéguès, Jean Michel Chauveau, Z. Bougrioua, Tiankai Zhu, Denis Martin, Nicolas Grandjean

The microstructure of nonpolar heteroepitaxial wurtzite films (GaN and ZnO-based) is dominated by the presence of planar basal stacking faults (BSFs). In this paper, transmission electron microscopy studies of both GaN and ZnO nonpolar films oriented either (11–20) or (1–100) and grown on sapphire…

Journal of Applied Physics, 2012, 112 (11), pp.113518. ⟨10.1063/1.4768686⟩. ⟨hal-02906733⟩

• Article dans une revue

The microstructure of Ti/Au contacts on n-type GaN annealed in nitrogen

L. Dobos, L. Toth, B. Pecz, Z.E. Horvath, A.L. Toth, B. Beaumont, Z. Bougrioua

Microelectronic Engineering, 2012, 90, pp.118-120. ⟨10.1016/j.mee.2011.05.011⟩. ⟨hal-00790434⟩

• Article dans une revue

Unpackaged infrared thermoelectric microsensor realized on suspended membrane by silicon technology

C. Sion, P. Godts, K. Ziouche, Z. Bougrioua, T. Lasri, D. Leclercq

Sensors and Actuators A: Physical , 2012, 175, pp.78-86. ⟨10.1016/j.sna.2011.12.051⟩. ⟨hal-00788268⟩

• Article dans une revue

Bilayer Cr/Au contacts on n-GaN

L. Dobos, L. Toth, B. Pecz, Z.J. Horvath, Z.E. Horvath, A.L. Toth, B. Beaumont, Z. Bougrioua

Vacuum, 2012, 86, pp.769-772. ⟨10.1016/j.vacuum.2011.07.027⟩. ⟨hal-00790436⟩

• Article dans une revue

Comparison of Fe and Si doping of GaN: An EXAFS and Raman study

M. Katsikini, F. Pinakidou, J. Arvanitidis, E.C. Paloura, S. Ves, Ph. Komninou, Z. Bougrioua, E. Iliopoulos, T.D. Moustakas

The effect of Fe and Si doping in GaN grown epitaxially on Al2O3 is studied using Extended X-ray Absorption Fine Structure (EXAFS) and Raman spectroscopies. The EXAFS analysis shows that in GaN samples grown by Molecular Beam Epitaxy (MBE) at 750 °C the Ga–Ga distance is about 0.19% longer than the…

Materials Science and Engineering: B, 2011, 176 (9), pp.723-726. ⟨10.1016/j.mseb.2011.02.028⟩. ⟨hal-02906735⟩

• Communication dans un congrès

A new method to improve the efficiency of the heat flow path of a micro thermoelectric generator

Z. Yuan, K. Ziouche, Z. Bougrioua, P. Godts, T. Lasri, D. Leclercq

9th European Conference on Thermoelectrics, ECT 2011, 2011, Thessaloniki, Greece. pp.435-438, ⟨10.1063/1.4731589⟩. ⟨hal-00800350⟩