graded-gap heterojunction

  • 1Organic solar cell — An organic photovoltaic cell (OPVC) is a photovoltaic cell that uses organic electronics a branch of electronics that deals with conductive organic polymers or small organic molecules[1] for light absorption and charge transport. The plastic… …

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  • 2Organic light-emitting diode — Demonstration of a flexible OLED device A green emitting OLED device An …

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  • 3High Electron Mobility Transistor — HEMT stands for High Electron Mobility Transistor, and is also called heterostructure FET (HFET) or modulation doped FET (MODFET). A HEMT is a field effect transistor incorporating a junction between two materials with different band gaps (i.e. a …

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  • 4MODFET — The modulated doping field effect transistor or modulation doped field effect transistor (MODFET) is a type of a field effect transistor, also known as the High Electron Mobility Transistor (HEMT). Like other FETs, MODFETs are used in integrated… …

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  • 5Heterostructure-emitter bipolar transistor — The Heterojunction emitter bipolar transistor (HEBT), is a somewhat unique arrangement with respect to emitter blocking of minority carriers. This is accomplished by using heterostructure confinement in the emitter, introducing an energy barrier… …

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  • 6Silicon-germanium — SiGe (IPA|ˈsɪɡɪː, IPA|ˈsaɪdʒɪ), or silicon germanium, is a general term for the alloy Si1 xGex which consists of any molar ratio of silicon and germanium. It is commonly used as a semiconductor material in integrated circuits (ICs) for… …

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  • 7Semiconductor — Citations missing|date=March 2008A semiconductor is a solid material that has electrical conductivity in between a conductor and an insulator; it can vary over that wide range either permanently or dynamically. [. They are used in many… …

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