Electrical properties of cuprous oxide thin films fabricated by ultrasonic spray pyrolysis

2012 ◽  
Author(s):  
Wen-How Lan ◽  
Chun-Wei Tsai ◽  
Shao-Yi Lee ◽  
Wei-Min Chao ◽  
Ming-Chang Shih ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Spray Pyrolysis ◽  
Cuprous Oxide ◽  
Ultrasonic Spray Pyrolysis ◽  
Oxide Thin Films ◽  
Ultrasonic Spray

Study on aluminum concentration on optical and electrical properties of AZO thin films fabricated by ultrasonic spray pyrolysis

2019 ◽  
Vol 33 (22) ◽  
pp. 1950246
Author(s):  
Weiguang Yang ◽  
Miao He ◽  
Liu Yang ◽  
Ziliang Zhou ◽  
Xiaoying Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Spray Pyrolysis ◽  
Quartz Substrate ◽  
Visible Region ◽  
Ultrasonic Spray Pyrolysis ◽  
Aluminum Concentration ◽  
Near Band Edge ◽  
Band Edge Emission ◽  
Ultrasonic Spray

In this work, transparent and conductive Al-doped ZnO (AZO) nanofilms were prepared on quartz substrate by ultrasonic spray pyrolysis (USP) method. The effects of Al/Zn atomic ratios on the micro-structural, morphological, optical photoluminescence and electrical properties of AZO thin films were effectively investigated. All the prepared samples showed hexagonal wurtzite structure. The scanning electron microscopy (SEM) showed that the surface morphology of all samples changed with the substrate temperature. The average transmittance of all AZO samples was higher than 85% in the visible region. The photoluminescence (PL) spectrum of the samples showed that the near band edge emission in PL spectra shifted to shorter wavelengths with increasing Al-doped concentration. The lowest sheet resistance was obtained for the samples prepared with 4% at. Al-doped value. The electrical conductivity of AZO films was improved by Al doping, which allowed their use as optoelectronic materials.

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