Abstract
The transparent conductive oxide CdO thick films are prepared by screen printing method followed by sintering route. The structural, optical and electrical properties of as-grown films are characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), Fourier transform infrared (FTIR), ultraviolet–visible (UV–VIS) and DC conductivity measurement techniques. XRD, SEM and AFM studies reveal that the film deposited is polycrystalline, single phase and granular in nature. The crystallite size from XRD pattern’s most strong (111) peak calculated using Debye–Scherrer’s formula is 30 nm. IR transmission spectrum exhibits Cd–O stretching and bending mode peaks at 831 and 672 cm−1, respectively. Electrical properties were characterized by two-probe measurement in the temperature range between 300 and 400 K. Optical transmission spectroscopy and DC conductivity measurements have revealed the semiconducting nature of this film with direct band gap energy 2.53 and 0.29 eV activation energy and dc conductivity 4.5 × 10−7 (’Ωcm) −1.
Highlights
In recent years, transparent conductive oxide (TCO) layers have been drawing considerable attention for their potential applications in photovoltaic devices, gas sensors, phototransistors and other electronic and optoelectronic devices [1]
The transparent conductive oxide cadmium oxide (CdO) thick films are prepared by screen printing method followed by sintering route
The structural, optical and electrical properties of as-grown films are characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), Fourier transform infrared (FTIR), ultraviolet–visible (UV–VIS) and DC conductivity measurement techniques
Summary
Transparent conductive oxide (TCO) layers have been drawing considerable attention for their potential applications in photovoltaic devices, gas sensors, phototransistors and other electronic and optoelectronic devices [1]. Cadmium oxide is one of the providential TCOs possessing high electric conductivity [2, 3], transmittance with moderate refractive index. It belongs to a class of n-type semiconductor oxide with a rock salt crystal structure having band gap energy in the interval of 2.2–2.8 eV. CdO thick films have already been developed by various techniques such as spray pyrolysis [4], DC magnetron sputtering [5, 6], sol– gel [7, 8], pulsed laser deposition [9], sol–gel technique, etc. We have employed fast emerging screen printing technique to deposit CdO thick films
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
