Noise Temperature in Single Injection Cylindrical Current Flow in Insulator at Low and High Injection Level of Current.

Abstract

The theoretical and experimental studies are made for the non   planner current flow geometry to obtain the information’s regarding the space charge current flow in insulators operating under single injection mode. The theoretical investigation has been made in this paper for the cylindrical current flow in an insulator operating under hot   career conditions. The suitable metallic electrode is considered for the electron injection in conduction band of the insulator. The path of the injected current careers is decided by the current flow geometry. The modern concept of energy band theory of solid structure may be applied to explain clearly the free movement of the injected free electrons in the conduction band of an insulator. These free electrons interact with the presence of trapping states and space charge inside the insulator to give rise different aspect of the conduction mechanism.

The situation become more complicated due to the presence of hot career conditions inside the insulator which has short length the noise temperature develops to a considerable amount and it is spatial   for the cylindrical structure. The hot electron region is considered for this purpose and the noise generated due to the fluctuations of the career velocity governs   their diffusion properties under cylindrical structure. Therefore the noise and the Diffusion of hot careers in insulator operating under cylindrical current flow geometry are clearly related properties. The aim of present   paper   is to develop the theoretical models for the noise temperature with the help of very simple method previously available in Literature.  The field dependent mobility is considered their throughout the insulator operating under hot career regime   where a significant value of noise temperature is observable. The hot electron effects are observed in a very short device length under cylindrical current flow at low and high injection Label of current separately.