Wavelength-selective photo detector
First Claim
1. A photo detector device, comprising:
- a transparent upper electrode including a capacitor;
a first semiconductor layer disposed under the upper electrode;
an optical absorption layer disposed under the first semiconductor layer for absorbing light to generate pairs of electrons and holes;
an amplification layer disposed under the optical absorption layer for generating secondary electrons;
a second semiconductor layer disposed under the amplification layer; and
a lower electrode disposed under the second semiconductor layer and including an inductance coupled in parallel with an external resistance.
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Accused Products
Abstract
A wavelength-selective photo detector device includes a transparent upper electrode including a capacitor, a first semiconductor layer disposed under the upper electrode, an optical absorption layer disposed under the first semiconductor layer for absorbing light to form pairs of electrons and holes, an amplification layer disposed under the optical absorption layer for generating secondary electrons, a second semiconductor layer disposed under the amplification layer, and a lower electrode disposed under the second semiconductor layer and including an inductance coupled in parallel with an external resistance. The photo detector improves the S/N ratio and filters only light having a particular wavelength band.
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Citations
11 Claims
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1. A photo detector device, comprising:
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a transparent upper electrode including a capacitor;
a first semiconductor layer disposed under the upper electrode;
an optical absorption layer disposed under the first semiconductor layer for absorbing light to generate pairs of electrons and holes;
an amplification layer disposed under the optical absorption layer for generating secondary electrons;
a second semiconductor layer disposed under the amplification layer; and
a lower electrode disposed under the second semiconductor layer and including an inductance coupled in parallel with an external resistance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification