Abstract
Thin films of SnO2:Al and ZnO: Al were deposited under different deposition parameters. Effect of substrate temperature, Carrier gas pressure, substrate to nozzle distance and doping percentages were investigated to obtain optimum conditions for deposition of p-SnO2:Al for LED applications. Optimized film of SnO2:Al was deposited at temperature of 408 o C, nozzle substrate distance of 4.75 cm, carrier gas pressure of 1.88 bars and aluminium doping atomic percent of 5.37 %. Solid spectrophotometer DUV 3700 was used to obtain the transmittance data that was between 75% - 78% in the visible range. Four point probe was used to obtain electrical resistivity of the films which was found to be of the order of 10-3 Ωcm. The band gap of the film was 3.96 eV. For n-ZnO: Al, deposition was done at a temperature of 400 o C, carrier gas pressure of 1.5 bars, nozzle substrate distance of 4.5cm. Aluminium doping atomic percent of 2.42 %. Solid spectrophotometer DUV 3700 was used to obtain the transmittance data. The average transmittance was found to be between 82% - 89% in the visible range. The films had resistivity of the order 10-1 Ωcm and a band gap of 3.71eV. The p-n junction of p-SnO2:Al and n-ZnO:Al that was fabricated had a turn-on voltage of 0.6V with a maximum current of 0.75μA at 4 V. These results show that films of p-SnO2:Al and n-ZnO:Al can be used in opto-electronic devices such as light emitting diodes (LEDs).
PAUL, N (2021). Characterization Of P-Sno2:Al /N-Zno:Al P-N Junction Deposited By Spray Pyrolysis Technique For Led Applications. Afribary. Retrieved from https://tracking.afribary.com/works/characterization-of-p-sno2-al-n-zno-al-p-n-junction-deposited-by-spray-pyrolysis-technique-for-led-applications
PAUL, NYANGARESI "Characterization Of P-Sno2:Al /N-Zno:Al P-N Junction Deposited By Spray Pyrolysis Technique For Led Applications" Afribary. Afribary, 28 May. 2021, https://tracking.afribary.com/works/characterization-of-p-sno2-al-n-zno-al-p-n-junction-deposited-by-spray-pyrolysis-technique-for-led-applications. Accessed 24 Nov. 2024.
PAUL, NYANGARESI . "Characterization Of P-Sno2:Al /N-Zno:Al P-N Junction Deposited By Spray Pyrolysis Technique For Led Applications". Afribary, Afribary, 28 May. 2021. Web. 24 Nov. 2024. < https://tracking.afribary.com/works/characterization-of-p-sno2-al-n-zno-al-p-n-junction-deposited-by-spray-pyrolysis-technique-for-led-applications >.
PAUL, NYANGARESI . "Characterization Of P-Sno2:Al /N-Zno:Al P-N Junction Deposited By Spray Pyrolysis Technique For Led Applications" Afribary (2021). Accessed November 24, 2024. https://tracking.afribary.com/works/characterization-of-p-sno2-al-n-zno-al-p-n-junction-deposited-by-spray-pyrolysis-technique-for-led-applications