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A silicon sample is dope with unknown concentration of Arsenic, such that the fermi level (EF) is 0.407 eV relative to intrinsic level (Ei). The conductivity of the silicon sample after doping is______(Ω – cm)-1.
The mobility of electrons μn = 3800 cm2/v-s and holes μp = 1800 cm2/v-s. Take kT = 0.0259 eV at 300°K and intrinsic concentration ni = 1.5 × 1010 cm-3
    Correct answer is between '59,62'. Can you explain this answer?
    Verified Answer
    A silicon sample is dope with unknown concentration of Arsenic, such t...
    Given, Si sample is doped with As (donor impurity) and the band structure is

    Let nd be doping concentration, hence the electron concentration also is nd.
    The extrinsic electron concentration is related to intrinsic concentration by

     
    ∴ Conductivity σ = μndq
    = 3800 × 1 × 1017 × 1.6 × 10-19
    = 60.8 (Ω - cm)-1
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    Most Upvoted Answer
    A silicon sample is dope with unknown concentration of Arsenic, such t...
    The conductivity of a doped semiconductor can be determined by the concentration of the dopant atoms and the mobility of the charge carriers.

    In this case, the unknown concentration of arsenic is not provided, so we cannot directly calculate the conductivity.
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    A silicon sample is dope with unknown concentration of Arsenic, such that the fermi level (EF) is 0.407 eV relative to intrinsic level (Ei). The conductivity of the silicon sample after doping is______(Ω – cm)-1.The mobility of electrons μn= 3800 cm2/v-s and holes μp= 1800 cm2/v-s. Take kT = 0.0259 eV at 300°K and intrinsic concentration ni= 1.5 × 1010cm-3Correct answer is between '59,62'. Can you explain this answer?
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    A silicon sample is dope with unknown concentration of Arsenic, such that the fermi level (EF) is 0.407 eV relative to intrinsic level (Ei). The conductivity of the silicon sample after doping is______(Ω – cm)-1.The mobility of electrons μn= 3800 cm2/v-s and holes μp= 1800 cm2/v-s. Take kT = 0.0259 eV at 300°K and intrinsic concentration ni= 1.5 × 1010cm-3Correct answer is between '59,62'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about A silicon sample is dope with unknown concentration of Arsenic, such that the fermi level (EF) is 0.407 eV relative to intrinsic level (Ei). The conductivity of the silicon sample after doping is______(Ω – cm)-1.The mobility of electrons μn= 3800 cm2/v-s and holes μp= 1800 cm2/v-s. Take kT = 0.0259 eV at 300°K and intrinsic concentration ni= 1.5 × 1010cm-3Correct answer is between '59,62'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A silicon sample is dope with unknown concentration of Arsenic, such that the fermi level (EF) is 0.407 eV relative to intrinsic level (Ei). The conductivity of the silicon sample after doping is______(Ω – cm)-1.The mobility of electrons μn= 3800 cm2/v-s and holes μp= 1800 cm2/v-s. Take kT = 0.0259 eV at 300°K and intrinsic concentration ni= 1.5 × 1010cm-3Correct answer is between '59,62'. Can you explain this answer?.
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