Startseite Structural and optical properties of pure ZnO and Al/Cu co-doped ZnO semiconductor thin films and electrical characterization of photodiodes
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Structural and optical properties of pure ZnO and Al/Cu co-doped ZnO semiconductor thin films and electrical characterization of photodiodes

  • Nihat Demirbilek

    Dr. Nihat Demirbil, born in 1964, studied Physical Engineering at Middle East Technical University, Turkey. He began and concluded his master studies in Physical Engineering at Gaziantep University, Turkey, and holds a PhD from Fırat University, Turkey. He worked as an instructor in the Physics Department at Harran University, Turkey between 1997 and 2002. He currently works as a teacher in the Ministry of Education in Turkey.

         , Fahrettin Yakuphanoğlu

    Fahrettin Yakuphanoğlu, born in 1972, is a full professor for Solid State Physics at Fırat University, Elazığ, Turkey. His academic and research interests are in the areas of nanomaterials, nanoelectronics, organic electronics, liquid crystal technology. His research interests include nanomaterials, nanoelectronics, organic electronics, liquid crystal technology devices, solar cells, thin film sensors and many others.

         und Mehmet Kaya

    Mehmet Kaya, born in 1975, is a full professor for Materials Science and Machine Programming at Tekirdag Namık Kemal University, Tekirdag, Turkey. He has two PhD degrees, one in physics, the other in materials engineering. His academic and research interests are in the areas of metallic materials science, material characterization, semiconductor materials, Ti-based biomaterials, shape memory alloys, diffusion bonding and powder metallurgy.

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Veröffentlicht/Copyright: 31. März 2021
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Abstract

Nano-structured semiconductor thin films and p-type Si photodiodes were fabricated with the sol-gel spin coating technique using pure ZnO and co-doped ZnO:Alx:Cuy with x = 1 at.-%, y = 1, 2, 3, 5 at.-%. The structural and optical properties of thin films were examined using an XRD and a UV-spectrophotometer. The thin films have a hexagonal wurtzite crystal structure, and their optical band gap energies decrease with increasing Cu contribution. The electrical properties of photodiodes were assessed via I-V, C-V, (G/ω)-V and phototransient current (I-t, C-t) measurements. The Φb(I-V), experimental zero-bias barrier height, rectification ratio, ideality factor and Ion/Ioff parameters of the diodes were calculated using thermoionic emission model. In addition, Φb(C-V), barrier height, Vbi, built-in voltage, Vd, diffusion potential, Nd, donor concentration and Wd, depletion layer width of p-Si/ZnO:Alx:Cuy (x = 1 at.-%, y = 1 at.-%.) photodiodes were obtained using a C-2-V graph plotted at 1 MHz frequency. The photodiodes exhibit rectifying and photosensitive behaviors, and their reverse bias current increases with increasing light intensity. These results indicate that produced diodes can be employed as photodiodes or photosensors in optoelectronic circuits and electronic devices.

Keywords: Sol-gel; photodiode; ZnO; nanostructure; optical properties; semiconductors
Prof. Dr. Mehmet Kaya Machinery and Metal Technologies Department Çorlu Vacational School Tekirdağ Namık Kemal University Çorlu/Tekirdağ, Turkey

About the authors

Dr. Nihat Demirbilek

Dr. Nihat Demirbil, born in 1964, studied Physical Engineering at Middle East Technical University, Turkey. He began and concluded his master studies in Physical Engineering at Gaziantep University, Turkey, and holds a PhD from Fırat University, Turkey. He worked as an instructor in the Physics Department at Harran University, Turkey between 1997 and 2002. He currently works as a teacher in the Ministry of Education in Turkey.

Fahrettin Yakuphanoğlu

Fahrettin Yakuphanoğlu, born in 1972, is a full professor for Solid State Physics at Fırat University, Elazığ, Turkey. His academic and research interests are in the areas of nanomaterials, nanoelectronics, organic electronics, liquid crystal technology. His research interests include nanomaterials, nanoelectronics, organic electronics, liquid crystal technology devices, solar cells, thin film sensors and many others.

Prof. Dr. Mehmet Kaya

Mehmet Kaya, born in 1975, is a full professor for Materials Science and Machine Programming at Tekirdag Namık Kemal University, Tekirdag, Turkey. He has two PhD degrees, one in physics, the other in materials engineering. His academic and research interests are in the areas of metallic materials science, material characterization, semiconductor materials, Ti-based biomaterials, shape memory alloys, diffusion bonding and powder metallurgy.

Acknowledgment

This study was supported by Firat University, for PhD thesis (Project No. FF16.24).

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Published Online: 2021-03-31

© 2021 Walter de Gruyter GmbH, Berlin/Boston

Artikel in diesem Heft

  1. Frontmatter
  2. Corrosion testing
  3. Effects of mixed acid solution on bromide epoxy vinyl ester and its glass fiber reinforced composites
  4. Stress corrosion and mechanical properties of zinc coating on 304 stainless steel
  5. Mechanical testing
  6. Eliminating plasticity effects in the measurement of residual stress by using the hole-drilling method
  7. Fatigue testing
  8. Effect of the galvanization process on the fatigue life of high strength steel compression springs
  9. Materials testing for welding and additive manufacturing applications
  10. Wear behavior and microstructure of Fe-C-Si-Cr-B-Ni hardfacing alloys
  11. Analysis of physical and chemical properties
  12. Structural hydroxyl distribution in jadeite grains and the diagenesis mechanism of jadeitite in Myanmar, Guatemala and Russia
  13. Production-oriented testing
  14. Comparison of processing parameter effects during magnetron sputtering and electrochemical anodization of TiO2 nanotubes on ITO/glass and glass substrates
  15. Mechanical Testing
  16. Effect of hydrothermal aging on the mechanical properties of nanocomposite pipes
  17. Wear Testing
  18. Investigation of the friction behavior of plasma spray Mo/NiCrBSi coated brake discs
  19. Component-Oriented Testing and Simulation
  20. Comparative investigation of the moth-flame algorithm and whale optimization algorithm for optimal spur gear design
  21. Fatigue Testing
  22. Development and application of load profiles for thermal qualification testing of receptacle automotive connectors
  23. Analysis of physical and chemical properties
  24. Structural and optical properties of pure ZnO and Al/Cu co-doped ZnO semiconductor thin films and electrical characterization of photodiodes
  25. Mechanical testing/Chemical resistance testing
  26. Effect of using different chemically modified breadfruit peel fiber in the reinforcement of LDPE composite
  27. Component-oriented testing and simulation
  28. Hybrid spotted hyena–Nelder-Mead optimization algorithm for selection of optimal machining parameters in grinding operations
https://doi.org/10.1515/mt-2020-0042
Schlagwörter für diesen Artikel
Sol-gel; photodiode; ZnO; nanostructure; optical properties; semiconductors

Artikel in diesem Heft

  1. Frontmatter
  2. Corrosion testing
  3. Effects of mixed acid solution on bromide epoxy vinyl ester and its glass fiber reinforced composites
  4. Stress corrosion and mechanical properties of zinc coating on 304 stainless steel
  5. Mechanical testing
  6. Eliminating plasticity effects in the measurement of residual stress by using the hole-drilling method
  7. Fatigue testing
  8. Effect of the galvanization process on the fatigue life of high strength steel compression springs
  9. Materials testing for welding and additive manufacturing applications
  10. Wear behavior and microstructure of Fe-C-Si-Cr-B-Ni hardfacing alloys
  11. Analysis of physical and chemical properties
  12. Structural hydroxyl distribution in jadeite grains and the diagenesis mechanism of jadeitite in Myanmar, Guatemala and Russia
  13. Production-oriented testing
  14. Comparison of processing parameter effects during magnetron sputtering and electrochemical anodization of TiO2 nanotubes on ITO/glass and glass substrates
  15. Mechanical Testing
  16. Effect of hydrothermal aging on the mechanical properties of nanocomposite pipes
  17. Wear Testing
  18. Investigation of the friction behavior of plasma spray Mo/NiCrBSi coated brake discs
  19. Component-Oriented Testing and Simulation
  20. Comparative investigation of the moth-flame algorithm and whale optimization algorithm for optimal spur gear design
  21. Fatigue Testing
  22. Development and application of load profiles for thermal qualification testing of receptacle automotive connectors
  23. Analysis of physical and chemical properties
  24. Structural and optical properties of pure ZnO and Al/Cu co-doped ZnO semiconductor thin films and electrical characterization of photodiodes
  25. Mechanical testing/Chemical resistance testing
  26. Effect of using different chemically modified breadfruit peel fiber in the reinforcement of LDPE composite
  27. Component-oriented testing and simulation
  28. Hybrid spotted hyena–Nelder-Mead optimization algorithm for selection of optimal machining parameters in grinding operations
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