| 21. | C in a band diagram of GaAs / AlGaAs heterojunction-based high-electron-mobility transistor.
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| 22. | Two different structures of heterojunctions, a ) phase separated bi-layer and b ) bulk heterojunction.
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| 23. | At such a large thickness, only a small fraction of the excitons can reach the heterojunction interface.
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| 24. | He applied it to novel low noise quantum well avalanche photodiodes, heterojunction transistors, memory devices and lasers.
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| 25. | Fullerenes such as C 60 and its derivatives are used as electron acceptor materials in bulk heterojunction photovoltaic cells.
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| 26. | A graphene / n-type silicon heterojunction has been demonstrated to exhibit strong rectifying behavior and high photoresponsivity.
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| 27. | These methods are exploited in the design of heterojunction bipolar transistors ( HBTs ), laser diodes and solar cells.
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| 28. | More recent developments in OLED architecture improves quantum efficiency ( up to 19 % ) by using a graded heterojunction.
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| 29. | The structure of these two layers is the same : it is a heterojunction which catches electrons ( holes ).
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| 30. | Fullerenes such as PC 71 BM are often the electron acceptor materials found in high performing bulk heterojunction solar cells.
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