2.6 μm InGaAs photodiodes
- 12 September 1988
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 53 (11) , 989-991
- https://doi.org/10.1063/1.100050
Abstract
We have developed In0.82Ga0.18As p‐n homojunction photodiodes that have a long‐wavelength threshold at about 2.65 μm. A compositionally graded InxGa1−xAs layer accommodates the 2% lattice mismatch between the InP substrate and the In0.82Ga0.18As active layers of the device. At −2 V reverse bias the room‐temperature dark current is 3.5 μA (32 mA/cm2), and the quantum efficiency is 70–75% over the wavelength interval of 2.1–2.6 μm.Keywords
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