Deep Sub-micron MOSFET Modelling

Introduction It is important to test the characteristics of a transistor before they go into production. Silvaco TCAD is a tool which allows for simulation of semiconductor devices. Technology Computer-Aided Design (TCAD) software provides an effective solution for simulating semiconductor device structure under steady-state and transient condition. Analysis of electro-thermal parameters like electric field, leakage current, localized heating, and lattice temperature can aid in isolating structural vulnerability and understanding possible causes of device failure. The Silvaco TCAD primarily consists of ATLAS, ATHENA, DECKBUILD and TONYPLOT. ATHENA is a general purpose process simulator (1D or 2D) for applications across the fabrication process like etching, deposition, implant, annealing etc. ATHENA is a more cost-effective time effective simulator for real-world experiments. ATHENA incorporates a very fast and accurate analytical and Monte-Carlo models. It builds on the perfo...

Introduction CMOS stands for ‘Complementary Metal Oxide Semiconductor’. It is called Complementary as it contains two different types of semiconductor in the transistor – n-type & p-type. In an n-type, concentration of electrons is higher than that of holes (a place where an electron can exist, but is not). A p-type is chemically opposite to an n-type – hole concentration is higher than of electrons. CMOS is a voltage controlled device and has varied applications: sensors, integrated circuits, converters, micro-processors, micro-controllers, memory modules. A CMOS primarily has 3 body parts: Source Gate Drain In practicality, a CMOS also has a fourth terminal known as ‘Bulk Terminal’. It is generally assumed that this terminal is connected to the source. It has no impact on working of the transistor, it also does not affect the properties of the transistor . CMOS transistors are very efficient for their use of power. An added advantage is that the complement...