Thesis on cdo thin films

The deposition conditions for the films are shown in table 1. To sustain human development, more electrical energy consumption is expected in future [1]. Deposition parameters of CdO: The effect of Thesis on cdo thin films temperature studied by [9] on electrical and optical properties of CdO: Therefore, the conductivity of CdO thin films can be controlled by those native defects through the procedure of thin film preparation including doping with metallic ions.

About 1g of Cadmium and Tin alloy were placed on a boat and then the chamber covered tightly and evacuated. They were allowed to cool in sealed glass tubes to prevent oxidation of Cadmium and Tin. The conduction of pure CdO is attributed to its native defects of Oxygen vacancies and Cadmium interstitials.

The resistivity increased with growth temperature and the lowest resistivity of 1. This showed that carrier concentration varied with the proportion of Cadmium in the cell. These highly conducting and transparent tin-doped CdO thin films could be an excellent candidate for current and future solar cell applications.

The Voc were in the range of mV. Sn deposited by [5] using atmospheric pressure metalorganic chemical vapour deposition technique, showed that the highly transparent and conductive CdO: Solar cells hold great hopes for use as an environmental friendly and economically viable renewable source of energy.

A constant current of 3. The films exhibited direct and indirect band-to-band transitions, which corresponded to optical band gaps of 3. Introduction Energy consumption has increased steadily with civilization. A resistivity value of 1.

Cadmium Oxide thin films find wide applications in the field of optoelectronic devices such as solar cells, transparent electrodes, photodiodes among others.

Non-stoichiometric undoped CdO thin films usually exhibit low resistivity due to native defects of Oxygen vacancies and Cadmium interstitials [3].

Clean glass substrates were then mounted on a substrate holder of the Edwards Auto Magnetron Sputtering System. Sn thin films Parameter. Sn thin films were further improved by post-deposition annealing.

Tin-doped Cadmium Oxide CdO: Energy crisis due to a decline in fossil fuel stocks and increasing carbon dioxide emissions that are causing global warming has enhanced interest in the development of clean renewable sources of energy.

The electro-optical properties of as-deposited CdO: The structural, electrical and optical properties of the fabricated thin films were influenced by partial pressure of Dimethylcadmium and Tetramethyltin, substrate temperature, film thickness and annealing conditions.

To prepare Cadmium Oxide, Cadmium was heated in glass tube until it melted.

Cadmium Oxide is an n-type semiconductor with Sodium Chloride structure. Fluorine doping of CdO, shifts the optical band gap along with the increase in transparency of CdO films.

Cadmium Oxide can be doped with various dopants for example fluorine and tin. It has a direct optical band gap of 2.

Sn thin films are promising for photovoltaic applications. For example CdO transparent conducting oxide prepared by [4] with a band gap of 2. It was allowed to cool in sealed glass tube to prevent oxidation of Cadmium.GROWTH AND PROPERTIES OF CHEMICALLY DEPOSITED CdS THIN FILMS A Thesis submitted to the Faculty of Science, Technology & Engineering Edith Cowan University Perth, Western Australia.

From the transmittance spectra it was found that the CdO thin films coated on low precursor concentration are highly transparent. Hall measurements confirmed that the semiconducting behavior of CdO with n-type electrical conductivity. molten salt assisted self-assembly (masa): synthesis of mesoporous silica-zno and mesoporous cdo thin films a dissertation submitted to the department of chemistry.

The un-doped CdO thin film exhibit a carrier concentration of × 10 21 cm −3. This is improved with Sn doping level and obtained a maximum of × 10 21 cm −3 for 5 wt%.

The improvement of carrier concentration may originate from the replacement of Cd 2+ ions by Sn 4+ ions in the CdO lattice. CHARACTERIZATION OF Cu x N y AND CdO:Al THIN FILMS FOR SOLAR CELL APPLICATIONS OBARE BENARD MOSOTI [ (Sc.)] I56/CE// A Thesis Submitted in Partial Fulfillment of The Requirements for The Award of.

CdZnTe and Thin Film CdTe based Devices by Shumaila Babar Supervised by This thesis investigates the effect of these two processing steps on CdZnTe detectors Te 2/Te 3, CdO and ZnO. Devices were fabricated .

Thesis on cdo thin films
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