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Definitions (36)

1

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absorption


intake of light by a material: the darker the material, the more light it absorbs
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acceptor


material which accepts electrons
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3

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atomic shell


negatively charged electrons, which – figuratively speaking – orbit the nucleus (see below)
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atomic nucleus


motionless, positively charged centre of the atom
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defect electron


see hole
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donor


material which donates electrons
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doping


systematic addition of impurities into a high-purity material in order to manipulate the material properties such as electrical conductivity
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efficiency


ratio of energy used to energy spent: in lamps ratio of light produced to electrical power consumption, in solar cells ratio of electrical power produced to absorbed radiation power
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electron


negative charge carrier
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electron-hole pair


see exciton
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