Avalanche photodiode

According to one aspect, there is provided an avalanche photodiode comprising a first semiconductor layer that absorbs photons of a first wavelength range and having a first energy bandgap; a second semiconductor layer that absorbs photons of a second wavelength range and having a second energy band...

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Bibliographic Details
Main Author CHIA CHING KEAN
Format Patent
LanguageEnglish
Published 26.05.2015
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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Summary:According to one aspect, there is provided an avalanche photodiode comprising a first semiconductor layer that absorbs photons of a first wavelength range and having a first energy bandgap; a second semiconductor layer that absorbs photons of a second wavelength range and having a second energy bandgap, the second energy bandgap being different from the first energy bandgap; and a control layer between the first semiconductor layer and the second semiconductor layer, the control layer having a third energy bandgap engineered to suppress carriers created from dark current.
Bibliography:Application Number: US201214351608