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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.
A player hits a ball at some angle the ball goes high up in the space the player runs and catches the ball before it hits the ground which of the two has greater displacement?
In an expression ½kx2 for the potential energy accumulates in the spring what does the x represent? Answer: Quite frequently we consider there to be an object at
Indicate all that is incorrect about the statement The magnetic field lines of a stationary bar magnet move from the north pole of the bar magnet to the south pole of the bar magne
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Ask question #whether s component or p component present in the reflected light of Biot''s polariscope# Minimum 100 words accepted#
Cross Product The direction of the cross product of 2 vectors is elaborates. The magnitude shown is correct but not discussed.
Question 1. Discuss the quality control measures for ultrasound equipment? 2. What are the different kinds of transducers available? How will you select the appropriate tran
As a pendulum is raised to higher altitudes, its period: a) Increases b) Decreases c) Remains the same d) Decreases, and then remains the same Ans: When
composition of two simple harmonic vibrations acting at right angles
Which quantity is unchanged during refraction of light? Describe critical angle. Show an application of total internal reflection.
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