Photovoltaics (PV) is a method of generating electrical power by converting solar radiation into direct current electricity using semiconductors that exhibit the photovoltaic effect. Example-amorphous silica.
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What are extrinsic semi-conductor?
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Out of Schottky and Frenkel defect which increases the dielectric constant of crystals?
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What percent of space is utilised by spheres in (i) simple cubic, (ii) face-centered cubic, (iii) body-centered cubic structure?
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What is the difference between ccp and fcc lattice?
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What makes alkali metal halides sometimes coloured, which are otherwise colourless?
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If three elements A, B and C crystallize in a cubic solid lattic with A atom at the corner, B atoms at cube centre and C atoms at edges then what would be the formula of the solid?
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Long Answer Type
How many lattice points are there in one unit cell of each of the following lattice? (a) face centred cubic (b) face centred tetragonal (c) body centred cubic
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Short Answer Type
Name a salt that can be added to AgCl so as to produce cation vacancies.
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Find out the number of atoms per unit cell in a face-centred cubic structure having only single atoms at its lattice points.