ZnO:TiO2 NANOKOMPOZİT İNCE FİLMLERİN ELEKTRİKSEL ÖZELLİKLERİ

Öz

Bu çalışmada, ZnO:TiO2 nanokompozit ince filmler üretildi ve bu filmlerin elektriksel özellikleri incelendi. Nano kompozitler üretilirken hidrotermal sentez yöntemi kullanıldı. Üretilen ZnO:TiO2 nano kompozitlerden filmler üretilirken spin kaplama metodu kullanıldı. Film hazırlık süresince katkısız TiO2 filmler, 1:5 ZnO:TiO2 ve 1:2 ZnO:TiO2 oranında nanokompozit filmler üretilmiştir. ZnO:TiO2 nano kompozitlerin elektriksel özellikleri kapasitans – voltaj ve kondüktans – voltaj grafikleri incelenerek elde edilmiştir. Elde edilen grafiklerden ayarlanmış kondüktans – voltaj ve ayarlanmış kapasitans voltaj grafikleri hesaplanmıştır. ZnO:TiO2 nanokompozit ince filmlerin frekansa bağımlı özellik gösterdiği anlaşılmıştır. Elektriksel karakteristikler kullanılarak ara yüz durum yoğunlukları hesap edilmiştir. Hesaplamalar sonucunda ara yüz durum yoğunluklarının da frekansa bağlı karakteristiğe sahip olduğu anlaşılmıştır

Anahtar Kelimeler

• ZnO:TiO2
• Nano kompozitler
• İnce Filmler
• Fotodedektörler
• Fotodiyotlar

ELECTRICAL PROPERTIES OF ZnO:TiO2 NANOCOMPOSITE THIN FILMS

Öz

In this work, ZnO:TiO2 nanocomposites thin films were produced, and electrical properties were evaluated. Nanocomposite nanoparticles were used as thin film source in the preparation which was produced using hydrothermal synthesis in different concentrations. Spin coating process was adopted in the preparation of ZnO:TiO2 nanocomposites films. In the thin film preparation pure TiO2,and nanocomposites in 1:5 ZnO:TiO2 and 1:2 ZnO:TiO2 concentrations were prepared. Electrical properties of the ZnO:TiO2 composites were assessed where capacitance – voltage and conductance – voltage measurements were performed. Adjusted conductance (Gadj) – voltage (V) and adjusted capacitance (Cadj) – voltage (V) characteristics were studied. Frequency dependent characteristics were obtained in the electrical measurements. The density of interface states (Dit) were assessed; results illustrated that the Dit has frequency dependent characteristics.

Anahtar Kelimeler

• ZnO:TiO2 Nanocomposites
• Thin films
• Photodiodes
• Photodetectors

Kaynakça

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