ZnO Filmlerinin Optik, Elektrik ve Yüzey Özellikleri Üzerine Tavlama İşleminin Etkileri

• Main Authors: Olcay GENÇYILMAZ, Ferhunde ATAY, İdris AKYÜZ
• Format: Article
• Language: English
• Published: Suleyman Demirel University 2014-07-01
• Series: Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi
• Subjects: Gövde Isı değiştiricisi Basınç düşümü Enerji
• Online Access: http://dergipark.ulakbim.gov.tr/sdufenbed/article/view/1089004609

ZnO films were prepared on glass at 3005 C substrate temperature by ultrasonic spray pyrolysis. The deposited films were annealed at various temperatures (350, 450, 550 C) for 2 hours. Annealed and unannealed of ZnO films were characterized by studying their optical, electrical and surface properties. The optical transmittance and absorbance spectra of all films were examined by UV-VIS Spectrophotometer and the optical band gap was found using optic method. Besides, visible emission peaks and native point defects of ZnO films were determinate using photoluminescence spectra. Thickness, refractive index and extinction coefficient values were obtained with spectroscopic ellipsometry technique. The electrical and surface properties of the films were characterized four point technique and atomic force microscopy, respectively. According to result, the effects of annealing temperature on the optical, electrical and surface properties of the ZnO films are discussed