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Understanding Metal-Silicon Contacts in Semiconductor Physics

This overview explores various types of metal-metal and metal-silicon contacts, focusing on their electronic properties, work functions, and implications for semiconductor performance. The analysis covers details such as vacuum energy levels, the influence of smaller and larger metal work functions, and how these factors affect electronic behavior in semiconductor devices. This foundational knowledge is essential for designing efficient contacts in electronic applications.

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Understanding Metal-Silicon Contacts in Semiconductor Physics

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  1. E vac f 1 f 2 E F 1 E F 2 Metal-metal contact

  2. E vac f 1 f 2 e- e- e- e- Metal-metal contact

  3. y f f - = 1 2 + + + + + E - F - - - - Metal-metal contact

  4. E vac f M f Si E C E F M E F Si E V Metal-silicon contact (smaller metal work function)

  5. E vac f M f f Si Si E C E F Si E V e- e- e- e- Metal-silicon contact (smaller metal work function)

  6. - f f M Si - - - - - + + + + + E F Metal-silicon contact (smaller metal work function)

  7. E vac f M f Si E C E F M E F Si E V Metal-silicon contact (larger metal work function)

  8. E vac f M f f Si Si E C E F M E F Si E V e- e- e- e- Metal-silicon contact (larger metal work function)

  9. f - f M Si - - - - - + + + + + E F Metal-silicon contact (larger metal work function)

  10. E vac f f M Si E C E F M E F Si E V Metal-silicon contact (equal work functions)

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