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4. (a) Explain the concept of (i) intrinsic, (ii) n-type, and (iii) p-type semiconductors with the aid of bond diagrams and band diagrams.
(b) What is a hole? Using a mathematical derivation to show that the holes behave like positive charges.
(c) Explain with the aid of Fermi-Dirac distribution function that at 0° K, all the energy states in the valence band of silicon are filled and all the energy states in the conduction band are empty.
(d) Why it is necessary to use effective mass instead of real mass for electrons in the analysis of semiconductor materials and mention why different effective masses are to be used for different types of semiconductors,
(e) Explain (a) bonding orbital and (b) anti-bonding orbital.
The quantum number which specifies the location of an electron as well as energy is : (1) Principal quantum number (2) Azimuthal quantum number (3) Spin quantum number
what is the role of structural protein, their types, how are they formed, significance.
OUTLINE AND EXPLAIN THE LIMITATIONS OF VBT
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why alkane are less rective then alkene?
oxo process - Hydrocabon It is as well known as carbonylation or hydroformylation reaction. A group of alkene carbon monoxides and hydrogen. Elevated temperature and under pres
What is the chemistry of nitration of naphthalene?
Q. What are the Ligands? Ligands: The ions and/or molecules which are directly attached to the central atom/ion are called ligands. A ligand could be an iron, an atom or a ne
i need complete assignment on it
Vapour phase cracking - Hydrocarbon In this method, gas oil or kerosene oil is vaporized in vapour phase. The temperature is reserved 600 - 800 o C and the pressure is approxim
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