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This work focuses on the effectiveness of different metal oxides act as sensing layer in the gas sensor. This is for sensing ethylene (C2H4) gas in fruit ripening detection. The study involved a computational approach, COMSOL Multiphysics whereby the ripeness detector is simulated and characterized. The paper presents a sensitives layer of metal oxides with a thickness of 0.5pm on Lithium Niobate...
This work is based on the development of LED using a circular chip of ZnSe. Proper analyses of the proposed LED are performed by adding optical transition and nonradiative recombination processes. The voltage applied to the ZnSe LED ranges from 0 V to 3.5 V. The current-voltage characteristic and the flow of current density are obtained. At 2.5 V, the carriers move towards n-contact hence reduces...
This paper presents investigation carried out on the properties of zinc oxide (ZnO) infrared light emitting diode (IR LED). Specifically, it focuses on dopant thickness variation in n and p layers. The IR LED structure is designed based on simple p-n junction theory. The p contact is deposited on the center top, and n contact is deposited at the edge of the IR LED. Thus, a current-voltage relationship...
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