Physical Properties of Sol Gel Copper Oxide (CuO) Thin Films; Sol concentration effect

الموضوعات

علوم بحتة وطبيعية

الملخص

In this study, copper oxide (CuO) nanostructured thin films with different precursor concentrations (0.2, 0.4, 0.6 mol/L) were synthesized on glass substrates by the sol–gel spin coating technique. Copper chloride dihydrate, ethanol and monoethanolamine (MEA) were used as precursor, solvent and stabilizer, respectively. Structural, optical and luminescence properties of the CuO films were investigated by XRD, UV-Vis spectrometry and PL spectroscopy techniques. X-ray diffraction shows, the high crystallinity of all films with preferential orientation and crystallite size is 6 nm. Photoluminescence of all films showed emissions in the ultraviolet (UV) and several visible emissions such as violet, blue, green, yellow and red correspond to near-edge band (NBE) of CuO and the different defects in copper oxide. The average transmittance of all films is between 50 to 70 % in the visible region. A sharp absorption edge has been observed for all films in the region between 400 and 450 nm. This attributed to the absorption of light by copper oxide (CuO) thin films. The band gap was determined to be 2.7-2.9 eV (decreased with precursor concentration) that is significantly greater than the band gap of CuO bulk. Elaborated CuO films with good quality can be used in several applications such as: solar cells and photocatalysis.

روابط وملفات

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التعريف والنوع

رقم الوثيقة: fb42a288-f9ce-460f-aac9-80d43292417b
رقم العقد: 0
نوع الوسائط: Crawler
نوع المحتوى: الرسائل العلمية
صيغة المصدر: ماستر (LMD)
نوع الملف: pdf text
أسماء الملفات: 2073301_1.pdf

بيانات النشر

ألقاب المؤلفين: [{"name_ar":"Imane Mecheter","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":"Mahroug AbdElhafid","title_ar":"اشراف","title_en":"Supervision"}]
اللغة: French

المصدر والدورية

اسم المصدر: Physical Properties of Sol Gel Copper Oxide (CuO) Thin Films; Sol concentration effect

المحتوى والصفحات

عدد الصفحات: 0

إشراف وإعداد

الإشراف: Mahroug AbdElhafid
الإعداد: Imane Mecheter

الاقتباسات الببليوغرافية

APA

Imane Mecheter و Mahroug AbdElhafid. (2019). Physical Properties of Sol Gel Copper Oxide (CuO) Thin Films; Sol concentration effect. أطروحة(ماستر (LMD)). كلية العلوم-جامعة محمد بوضياف - المسيلة. الجزائر.

MLA

Imane Mecheter و Mahroug AbdElhafid. Physical Properties of Sol Gel Copper Oxide (CuO) Thin Films; Sol concentration effect. 2019. كلية العلوم-جامعة محمد بوضياف - المسيلة، ماستر (LMD).