A CVD Diamond-Based Photodetector for the Visible and Near-IR Spectral Range
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2017-12-01 |
| Journal | Technical Physics Letters |
| Authors | V. A. Kukushkin, D. B. Radischev, M. A. Lobaev, Š”. Š. ŠŠ¾Š³Š“Š°Š½Š¾Š², A. V. Zdoroveischev |
| Institutions | Institute of Applied Physics, N. I. Lobachevsky State University of Nizhny Novgorod |
| Citations | 4 |
Abstract
Section titled āAbstractāA photodetector for the visible and near-IR spectral range has been created on the basis of a chemical- vapor-deposited diamond modulation-doped with boron. The detected electromagnetic radiation is absorbed in a thin Cr (7 nm)-Au (5.5 nm) bimetallic sublayer deposited on the surface of a modulationdoped diamond film comprising a highly doped (up to 5 Ć 1019 cm-3) 3-nm-thick delta-layer, low-doped (~1017 cm-3) 800-nm-thick sublayer, and highly doped (1020 cm-3) ~10-Ī¼m-thick sublayer with an ohmic Ti(50 nm)/Pt(15 nm)/Au(30 nm) contact. Holes generated in the bimetallic sublayer diffuse into diamond and are accelerated by an electric field in the low-doped sublayer to form a response photocurrent. The ampere/watt responsivity of the photodetector reaches 1 Ī¼A/W at a radiation wavelength of 445 nm and 0.18 Ī¼A/W at 1.06 Ī¼m.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 1981 - Physics of Semiconductor Devices