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Organic & polymer solar cells are made from thin films (typically 100nm) of organic semiconductor such as polymer and small molecule compounds like poly phenylene vinylene, copper phthalocyanine a blue or green organic pigment and carbon fullerenes. The energy conservation efficiency of data using conductive polymer are low at 4-5% efficiency for the best cells to data. Though, these cells could be helpful in some applications where mechanical flexibility and disposability are significant. The invention of conductive polymer has leaded the development of much cheaper cells which are based on inexpensive plastics. However all organic solar cells made of data suffer from degradation upon exposure to UV light, and hence have lifetimes which are far too short to be viable. The conjugated double bond systems in the polymers, which take the charge, are all the time susceptible to breaking up when radiated with shorter wavelengths. Additionally, most conductive polymer, being highly unsaturated and reactive, are highly sensitive to atmospheric moister and oxidation, making commercial applications difficult.
Get an expression for lateral shift produced by a parallel sided glass slab placed in air.
DEFORMATION IN A REAL BODY DUE TO APPLICATION OF FORCE The idea of a hard body, where the constituent molecules are fixed with respect to each other, is theoretical. Till how we
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For the series-parallel arrangement shown in Figure, find (a) The supply current, (b) The current flowing by each resistor and (c) the p.d. across each resistor
work done by conservative force on a system is equal to
Ans) In the first one..... F=ma...the only force which acts is F...which causes an acc. of ''a'' to the body of mass m... and as the force=>F=ma but on the second... let .
The Caesium Chloride Structure CsCl structure is basically a simple cubic lattice with 2 atom basis, where one atom is attached to the lattice point and the other at ( a/2 , a
write a short note on terrestrial telescope
Which of the following particles has more electrons than neutrons: (1) C (2) F- (3)O -2 (4)Al +3 Ans: O -2
The weight of a body is the force with which it is attracted in the direction of the centre of earth. When an object is stationary with respect to the planet, its weight equivalent
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