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Band‐gap engineering via graded gap, superlattice, and periodic doping structures: Applications to novel photodetectors and other devices

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1 Author(s)
Capasso, F. ; Bell Laboratories, Murray Hill, New Jersey 07974

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Recent new multilayer structures and their device applications are reviewed. These new concepts allow one to radically modify the conventional energy band diagram of a pn junction and thus tailor the high field transport properties to an unprecedented degree (band‐gap engineering). This approach has been used to propose and implement a new class of avalanche photodiodes with enhanced ionization rates ratio and the solid state analog of a photomultiplier (staircase detector). Other device applications such as repeated velocity overshoot structures are also discussed.

Published in:

Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures  (Volume:1 ,  Issue: 2 )

Date of Publication:

Apr 1983

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