Diffusion Technology

  • M. Kubát


A separate chapter is devoted to diffusion technology because of its fundamental importance. First, the importance of diffusion technology for semiconductor devices is considered and the basic underlying equations are introduced; the solution to these equations leads (under certain boundary conditions) to the error function. A number of practical examples is given where the diffusion of impurities into the semiconductor is solved using the error function. Some further examples are introduced using a course other than the error function. Calculations are made of the breakdown voltage of the pn junction fabricated by diffusion technology, and the dependence of breakdown voltage on the diffusion process parameters is derived. Technological equipment is described and the roles of the surface concentration of impurities and the diffusion coefficient are analysed.


Surface Concentration Breakdown Voltage Impurity Concentration Semiconductor Surface Diffusion Technology 
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Copyright information

© Prof. Ing. Milan Kubát, Dr. Sc. 1984

Authors and Affiliations

  • M. Kubát
    • 1
  1. 1.Department of MicroelectronicsTechnical University of PraguePrague 6Czechoslovakia

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