Réalisation de dispositifs microélectroniques à base de films organiques

الموضوعات

علوم بحتة وطبيعية

روابط وملفات

التعريف والنوع

رقم الوثيقة

ff4c4829-1137-4341-8927-5b790cdeac11

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل دكتوراة

نوع الملف

pdf text

أسماء الملفات

790939_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":" Ibrahim Missoum","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":" Mostefa Benhaliliba","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"A. Chaker","title_ar":"اشراف","title_en":"Supervision"}]

اللغة

French

المصدر والدورية

اسم المصدر

Réalisation de dispositifs microélectroniques à base de films organiques

المحتوى والصفحات

عدد الصفحات

0

ترجمة الملخص

This thesis focuses on the realization of microelectronic devices based on organic materials.In order to develop next generation devices those have applications in the topic of solarphotovoltaic energy. Organic semiconductors based MetalPhthalocyanine appear as analternative to inorganic semiconductors and represent a promising technology for economicand environmental issues. Our research involves the fabrication and characterization ofdevices based MetalPhthalocyanine (MPc). We have set up an experimental protocol ofmicroelectronic devices (Schottky diodes) based MPc achievement. In the first step, we makethin films based on MgPc, ZnPc, AlPc-Cl and AlPc-H on several substrates glass, n-GaAs,InP-p, n-Si and p-Si. The selected thin films deposited on glass substrate are then investigatedby X-ray pattern, UV-VIS-IR, Raman diffusion, AFM-SEM observation means. In the secondstep, the selected layers deposited on n-GaAs, InP-p, n-Si and p-Si are the tools of the organicdevice fabrication. Our fabricated devices form the Schottky diodes and the microelectronicproperties are then studied. The preparation of thin films and fabrication of Schottky diodesare achieved by the spin-coating and thermal evaporation under vacuum techniques. At roomtemperature, the achieved electrical measurements of MPC organic Schottky diodes arecurrent-voltage in dark-light and capacitance-voltage under dark condition. Based on physicalproperties study of thin layers (MgPc, ZnPc and AlPc-Cl) deposited on glass, we confirm theformation of MPc phase and the nanogranular structure of such layers G~ 1 nm. Besides thefilms are transparent semiconductors owing an indirect wide band gap of 2.8 eV and presentvibrational modes. MPc layers have a smooth (RMS ~1 0 nm) surface morphology andnanograins grow along z-axis. As mentioned earlier, we have made 12 kinds of organicdevices. The measurement of the (I-V) characteristic under light and dark, and the (C-V) and(G / ω-V) measurements allow extracting many microelectronic and photovoltaic parameterssuch as ideality factor, series resistance, barrier height, rectifying parameter, interface density,open circuit voltage, short circuit current, photosensitivity, fill factor, efficiency, donor andacceptor carrier densities and potential in built. The well known approximation methods ofparameters calculation Cheung-Cheung and Norde are used. Conduction mechanisms of suchorganic structures are widely investigated in one hand and effect of substrate and organiclayer on electronic properties is also largely studied in other hand. The Schottky diodes basedon MgPc have shown excellent performance for different structures (Ag/MgPc/n-Si/Au,Ag/MgPc/p-InP/Au-Zn and Ag/MgPc/n-GaAs/Au-Ge). Consequently, the organic MgPcdevice is the best candidate for applications in microelectronics and the solar photovoltaiccompared to ZnPc, AlPc-Cl and AlPc-H.

إشراف وإعداد

الإشراف

Mostefa Benhaliliba, A. Chaker

الإعداد

Ibrahim Missoum

الاقتباسات الببليوغرافية