TAILIEUCHUNG - Effect of annealing temperature on Cu2O thin films prepared by thermal oxidation method

We report a facile process to fabricate cuprous thin films by thermal oxidation of copper substrates. Structure and phase identification were studied by X-ray diffraction measurement and Raman spectroscopy. Scanning electron microscopy was utilized to study surface morphology of the as-fabricated thin films and optical properties of the samples were investigated by diffused reflectance spectroscopy. | VNU Journal of Science Mathematics Physics Vol. 36 No. 2 2020 31-36 Original Article Effect of Annealing Temperature on Cu2O Thin Films Prepared by Thermal Oxidation Method Tran Thi Ha1 2 Nguyen Thi Huyen Trang2 Bach Thanh Cong2 Nguyen Thi Dieu Thu1 Nguyen Thanh Binh2 NguyenViet Tuyen2 Pham Nguyen Hai2 1 Faculty of Basic Science University of Mining and Geology Duc Thang Tu Liem Hanoi Vietnam 2 Faculty of Physics VNU University of Science Vietnam National University Hanoi 334 Nguyen Trai Thanh Xuan Hanoi Received 29 October 2019 Revised 27 November 2019 Accepted 28 November 2019 Abstract We report a facile process to fabricate cuprous thin films by thermal oxidation of copper substrates. Structure and phase identification were studied by X-ray diffraction measurement and Raman spectroscopy. Scanning electron microscopy was utilized to study surface morphology of the as-fabricated thin films and optical properties of the samples were investigated by diffused reflectance spectroscopy. The study shows that cuprous thin films could be obtained by controlling annealing temperature in the region of 200-300 oC. Keywords Copper oxide thin films thermal oxidation Raman. 1. Introduction Cuprous oxide Cu2O is a semiconductor with bandgap of around 1-2 eV 1 which finds many applications in fields of sensor photocatalyst and especially photovotaics 2 8 thanks to their interesting properties such as earth abundant composition environment friendly high absorption coefficient in visible region p type conduction. Even though the efficiencies of solar cell based on copper oxide is often quite low of around 1 to 2 the ratio of efficiency to cost of Cu2O is still very competitive to other materials. Hence preparation of Cu2O thin film is an interesting topic for study in view of both fundamental and application. ________ Corresponding author. Email address phamnguyenhai@ https 2588-1124 31 32 . Ha et al. VNU Journal of Science Mathematics .

• Toán học
• Copper oxide
• Thin films
• Thermal oxidation
• Annealing temperature
• Thermal oxidation method
• X ray diffraction measurement
• Nano particle
• CuO and TiO2 nanoparticles
• Particle size analyzer
• Raman spectroscopy
• Bulk heterojunction
• Solar cells
• Copper oxide nanoparticles
• Photo current density
• External quantum efficiency
• Pathogenic fungi
• Alternaria and fusarium
• Arid environment of Jodhpur
• Antifungal activity
• Fungal pathogens isolated
• Binary oxide catalyst structure
• Manganese oxide octahedral molecular sieves
• Low temperature CO oxidation
• Advanced CuO
• OMS 2 catalyst
• Mars van Krevelen mechanism
• Vietnam Journal of Science and Technology
• Bài viết khoa học
• Tạp chí Khoa học Công nghệ Việt Nam
• Journal of Zoology
• Metal oxides
• Aluminum oxide (Al2O3)
• Copper oxide (CuO)
• Titanium dioxide (TiO2)
• NP exposed fish
• tài liệu báo cáo nghiên cứu khoa học
• cách trình bày báo cáo
• kiến thức vật lý
• báo cáo vật lý
• các nghiên cứu vật lý
• báo cáo khoa học
• báo cáo hóa học
• công trình nghiên cứu về hóa học
• tài liệu về hóa học
• Nano copper oxide
• Wood preservative
• Rubber wood (Hevea brasiliensis)
• Nano based wood preservatives
• Specific gravity
• Copper (II) oxide
• Glucose sensing
• Cyclic voltammetry
• Human serum
• Chronoamperometric electrodeposition
• Nonenzymatic glucose sensing
• Journal of Chemistry
• Scanning electron microscopy
• Fourier transform infrared
• Structure of ranolazine functionalized CuO NPs
• Green synthesis
• Microwave reactions
• Zinc and copper oxide nanoparticles
• Malva parviflora L (Millow)
• Chemical precipitation
• Ozone ambient
• Energy dispersive spectroscopy
• Mesoporous materials
• MOF GO composite
• Gas storage
• Microporous storage materials
• Greatest potential