الصفحة الرئيسية

\

نسبة اكتمال الملف الشخصي
الجنسية
التخصص العام
التخصص الدقيق
المسمى الوظيفي
الدرجة العلمية (المرتبة)

نبذه مختصرة

My research interests are the elaboration of organic solar cells devices based on organic nanocomposites Organic nanocomposites are composed of an organic conducting polymer mixed with carbon derivative materials such as: C60, Carbon nanotubes (CNTs), PC70BM, Carbon nanopearls (CNPs), In my PhD thesis, I have studied organic photovoltaic cells based on MEH-PPV:C60 donnor:acceptor nanocomposites The structure of the investigated photovoltaic cells was ITO/MEH-PPV:C60/Al The photoactive layers were composed of the MEH-PPV polymer, acting as electron donnor material and the C60 molecules, acting as electron acceptors This study has emphasized the interplay between nanocomposites morphology and their photovoltaic properties We have studied the influence of C60 concentration on the dissociation of photogenerated pairs and charge transport We have also studied the variation of the photovoltaic parameters according to the organic solvent used to deposit the photoactive layer These effects could be correlated to the different morphologies resulting from the elaboration conditions The best photovoltaic performances have been performed with a new method of mixing donnor/acceptor compounds Organic dyes have been added to the MEH-PPV:C60 active layer in order to increase the absorption of the solar spectrum photons Recently, I am mainly interested on the study of MEH-PPV : Si NW hybrid nanocomposites Silicon Nanowires (Si-NW) are synthesised by (VLS) technique in a French Laboratory (CEA, Grenoble, France) We demonstrate a photovoltaic response in such structures with a high charge transfer investigated by photoluminescence quenching Another important research area that I am interested in is the elaboration of conducting, flexible and transparent electrodes based on CNTs films We fabricate PET/CNTs flexible electrodes by vacuum filtration method, which could replace the conventionnel ITO (Indium-Tin-Oxide) transparent electrodes usually used in optoelectronic devices

المؤهلات العلمية

*December 2005 : PhD in Physics from the University of Monastir in Tunisia and also from the Claude Bernard University in Lyon1 in France Research theme: "Processes of charge transfer and transport in organic photovoltaic cells based on MEH-PPV: C60 composite *July 2002 : Master of Sciences – Quantum Physics (Postgraduate Degree, granted 6 years after the baccalaureat), in the Faculty of Sciences of Tunis, Tunis El-Manar University, Tunisia Research theme : « Elaboration and Electrical Characterizations of Organic Diodes and Organic Thin Film Transistors based on Nickel Phthalocyanine (PcNi) Material» * Juin 2000 : Bachelor of Sciences - Physics (Postgraduate Degree, granted 4 years after the baccalaureat), in Faculty of Sciences of Monastir, Monastir University, Tunisia

الاهتمامات البحثية

My research interests are the elaboration of organic solar cells devices based on organic nanocomposites Organic nanocomposites are composed of an organic conducting polymer mixed with carbon derivative materials such as: C60, Carbon nanotubes (CNTs), PC70BM, Carbon nanopearls (CNPs), In my PhD thesis, I have studied organic photovoltaic cells based on MEH-PPV:C60 donnor:acceptor nanocomposites The structure of the investigated photovoltaic cells was ITO/MEH-PPV:C60/Al The photoactive layers were composed of the MEH-PPV polymer, acting as electron donnor material and the C60 molecules, acting as electron acceptors This study has emphasized the interplay between nanocomposites morphology and their photovoltaic properties We have studied the influence of C60 concentration on the dissociation of photogenerated pairs and charge transport We have also studied the variation of the photovoltaic parameters according to the organic solvent used to deposit the photoactive layer These effects could be correlated to the different morphologies resulting from the elaboration conditions The best photovoltaic performances have been performed with a new method of mixing donnor/acceptor compounds Organic dyes have been added to the MEH-PPV:C60 active layer in order to increase the absorption of the solar spectrum photons Recently, I am mainly interested on the study of MEH-PPV : Si NW hybrid nanocomposites Silicon Nanowires (Si-NW) are synthesised by (VLS) technique in a French Laboratory (CEA, Grenoble, France) We demonstrate a photovoltaic response in such structures with a high charge transfer investigated by photoluminescence quenching Another important research area that I am interested in is the elaboration of conducting, flexible and transparent electrodes based on CNTs films We fabricate PET/CNTs flexible electrodes by vacuum filtration method, which could replace the conventionnel ITO (Indium-Tin-Oxide) transparent electrodes usually used in optoelectronic devices

الخبرات والمناصب الإدارية

1/ President of the Internal Academic Accreditation Committee, Faculty of Sciences, University of Tabuk (since 2020 till now) 2/ Member in the Quality Committee in the Faculty of Sciences, University of Tabuk (2019-2021) 3/ Supervisor of the Academic Accreditation Unit in the Deanship of Development and Quality, University of Tabuk (2016 – 2018) 4/ Membership in the Deanship Council, Deanship of Development and Quality, University of Tabuk (2016 – 2018) 5/ Membership in the Planning and the final wording Commission, Deanship of Development and Quality, University of Tabuk (2016 – 2018

الجدول الدراسي
اليوم المادة الوقت
من إلى
الأحد PHYS0205 شعبة 1250 08:00 10:00
الثلاثاء PHYS0205 شعبة1250 08:00 10:00
الأبحاث والمؤلفات
  • 1- R Ben Chaâbane, A Ltaief, C Dridi, H Rahmouni, A Bouazizi and H Ben Ouada, “Study of Organic thin film transistors based on Nickel-Phthalocyanine Effect of annealing, Thin Solid Films 427 (2003), pp 371-376 2- S Besbes, A Ltaief, K Reybier, L Ponsonnet, N Jaffrezic, J Davenas, H Ben Ouada “Injection modifications by ITO functionnalization with a Self-Assembled Monolayer in OLEDS, Synthetic Metals 138 (2003), pp 197-200 3- J Davenas, M Chouiki, S Besbes, A Ltaief, H Ben Ouada, A Bouazizi, H Trad, M Majdoub “Influence of molecular structure on the optical absorption and emission of PPV derivatives, Synthetic Metals, 139 (2003), pp 617-620 4- A Ltaief, A Bouazizi, J Davenas, and H Ben Ouada “ Electrical and optical properties of thin films based on MEH-PPV/fullerene blends, Synthetic Metals, 147 (2004), pp 261-266 5- A Ltaief, J Davenas, A Bouazizi, R Ben Chaâbane, P Alcouffe and H Ben Ouada « Film morphology effects on the electrical and optical properties of bulk heterojunction organic solar cells based on MEH-PPV/C60 composite, Materials Science and Engineering: C 25 (1) 2005, pp 67-75 6- L Beji, T Ben Jomaa, A Ltaief and A Bouazizi, “poly(2-methoxy-5-(2’-ethylhexyloxy)1-4-phenylenevinylene)(MEH-PPV) thin film spin-coated on porous n-type GaAs, Phys Stat Sol (a) 202 (2005), 1763-1767 7- A Ltaief, R Ben Chaâbane, A Bouazizi and J Davenas “Photovoltaic properties of bulk heterojunction solar cells with improved spectral coverage, Materials Science and Engineering: C, 26, (2-3), 2006, pp 344-347 8- A Ltaief, A Bouazizi, J Davenas, P Alcouffe and R Ben Chaâbane, “ Dielectric behaviour of polymer–fullerene composites for organic solar cells, Thin Solid Films, 511-512, 26 2006, pp 498-505 9- Rafik Ben Chaabane, Adnène Ltaief, L Kaabi, Hafedh Ben Ouada, Nicole Jaffrezic-Renault and Joel Davenas “Influence of ambient atmosphere on the electrical properties of organic thin film transistors, Materials Science and Engineering: C, 26(2-3), 2006, pp 514-518 10- H Trad, A Ltaief, M Majdoub, A Bouazizi and J Davenas, “Effect of the side chain length on the optical and electrical properties of soluble PPV derivatives Materials Science and Engineering: C, 26 (2-3), 2006, pp 340-343 11- J Davenas, P Alcouffe, A Ltaief, A Bouazizi, “Influence of the Nanoscale Morphology on the Photovoltaic Properties of Fullerene/MEH-PPV Composites, Macromol Symp 2006, 233, pp 203–209 12- J Davenas, A Ltaief, V Barlier, G Boiteux, A Bouazizi, “Nanomaterials for photovoltaic conversion, Materials Science and Engeneering C, 28 (5-6), 1 July 2008, pp 744 – 750 13- A Ltaief, A Bouzizi, J Davenas, P Alcouffe, « Influence of the processing conditions on charge transfer and transport properties in poly(2-methoxy-5-(2’-ethylhexyloxy)1-4-phenylenevinylene):C60 composites for photovoltaics, Thin Solid Films 516 (2008), pp 1578-1583 14- A Ltaief, A Bouazizi, J Davenas « Charge transport in carbon nanotubes polymer composites photovoltai cells », Materials 2009, 2(3), 710-718 15- N Chehata, A Ltaief, A Bouazizi and V T Binth, "Charge Transfer Properties on Nanocomposites based on MEH-PPV: Carbon Nanopearls", Journal of Surfaces and Interfaces of Materials, Vol1, 1-7, 2012 16- Nadia Chehata, Olfa Dhibi, Adnen Ltaief, Ali Farzi, Abdelaziz Bouazizi , « Charge Transfer Properties in MEH-PPV/PS:MWCNTs Nanocomposites » Journal of Surface Engineered Materials and Advanced Technology, 2012, 2, 174-181 17- N Chehata , A Ltaief, A Farzi, B Ilahi and A Bouazizi, « Effect of functionalisation of MWCNTs on optical and morphological properties of MEH-PPV/MWCNTs nanocomposites » Int J Nanotechnology, Vol 10, Nos 5/6/7, 2013 18- Amin Imani, Gholamali Farzi and Adnen Ltaief “Facile Synthesis and characterization of Polypyrrole-Multiwalled carbon Nanotubes by in-situ oxidative polymerization, International Nano Letters, 3/1/52 (2013) 19- O Dhibi, A Ltaief, S Zghal, A Bouazizi, “Inverted low band gap polymer solar cells integrated with a low-temperature-annealed sol–gel-derived ZnO: Active layer thickness effect on the recombination process, Superlattices and microstructures, 60 (2013), 548 – 560 20- O Dhibi, A Ltaief, A Bouazizi, « Optical and Structural Properties of MEH-PPV: C60-Based Structures», Fullerenes, Nanotubes and Carbon Nanostructures , 21 (2013), 894 – 900 21- O Dhibi, A Ltaief, S Zghal, A Bouazizi, « Temperature dependence of molecular dynamic arrangement in the vicinity of the glass transition of MEH-PPV: C60 based structures: X ray and impedance spectroscopy analysis », Vacuum, 99 (2014), 80 – 88 22- Walid Aloui, Adnen Ltaief and Abdelaziz Bouazizi, « Transparent and conductive multi walled carbon nanotubes flexible electrodes for optoelectronic applications “ Superlattices and microstructures, 64 (2013), 581 – 589 23- O Dhibi, A Ltaief, A Bouazizi, « Effect of blend layer thickness on the dielectric response of PCDTBT:PC71BM-based bulk heterojunction solar cells », article in press in “Materials Science in Semiconductor Processing (http://dxdoiorg/101016/ jmssp201311004) 24- Nadia Chehata, Adnen Ltaief, Rabeb Bkakri, Abdelaziz Bouazizi, Emmanuel Beyou, “Conducting polymer functionalized multi-walled carbon nanotubes nanocomposites: optical properties and morphological characteristics, Materials Letters, 121 (2014), 227 – 230 25- Nadia Chehata, Adnen Ltaief, Rabeb Bkakri, Abdelaziz Bouazizi, “Optical and electrical properties of conducting polymer-functionalized carbon nanotubes nanocomposites, Materials Science in Semiconductor Processing, 22 (2014), 7 – 15 26- N Chehata, A Ltaief, B Ilahi, B Salem, A Bouazizi, H Maaref, E Beyou, “Improved photovoltaic performance of silicon nanowires/conjugatedpolymer hybrid solar cells, Synthetic Metals, 191 (2014), 6 – 11 27- R Bkakri, A Ltaief, N Chehata, N Chaaben, F Saidi, A Bouazizi, “Charge transfer properties in PVK:PcH2:C343:C60/p-Si hybrid nanocomposites for photovoltaics, Vacuum, 104 (2014), 33 – 40 28 Mhamdi Asya, Adnen Ltaief, Abdelaziz Bouazizi, #Effect of solvents on the optical and morphological properties of MEH-PPV: PC70BM nanocomposites#, Journal of Molecular Structure, Volume 1145 (2017) p 81-85 29 F Laariedh, A Ltaief, TB Badeche, AH Laatar, #Comparison of spin hall effect Comparison of Spin Hall Effect (SHE) and Spin Transfer Torque (STT) Magnetic Random Access Memories (MRAMs)#, Journal of Ovonic Research 07/2017 13(4):219-223 30 F LAARIEDH, T B BADECHE, ALTAIEF, RBOUSBIH # STUDY OF NEW MATERIALS FOR SOLAR CELLS# Chalcogenide Letters Vol 16, No 3, March 2019, p 107 – 112 31 T B BADÈCHE, A LTAEIF, F LAARIEDH, L VAILLANT ROCA,S LARRAMENDI, P SAINT GREGOIRE # HRTEM AND X-RAY DIFFRACTION STUDY OF CdTe NANOCRYSTALS DEPOSITED ONTO A ZnO NANORODS LAYER # Chalcogenide Letters Vol 16, No 6, June 2019, p 291 – 295 32 Adnen Ltaief, Farah Laraiedh, T-B Badèche, Abdelaziz Bouazizi, and Vu Thien Binh # MEH-PPV/Carbon Nanopearls Nanocomposites for Enhanced Organic Solar Cells Efficiencies # Journal of Nano ResearchVol 58, pp 68-73 (2019)
جوائز التميز
المشاريع البحثية
اسم المشروع وصف المشروع
Advanced materials for enhanced organic solar cells efficiencies : Towards Renewable Energy S-0222-1439 Submitted
S-0167-1437 S-0167-1437 Submitted
Synthesis and characterization of ZnFe2O4 nanoribbons doped in Polyaniline composites for electrochemical devices 0270-1440-S In progress
Elaboration of multi-functional chemical sensors protocols based on highly conductive polymer intercalated titanium and gold nanoparticles 0267-1440-S In Progress
معلومات التواصل
البريد الإلكتروني :