Abstract
High-quality InGaAs/InP quantum wells with ultra-narrow well widths (∼10Å) and peak response at 4.55 μm were grown by gas source molecular beam epitaxy. These structures were characterized by cross-sectional tunneling microscopy (XSTM), double-crystal x-ray diffraction (DCXRD), and cross-sectional transmission electron microscopy (XTEM). Based on the structural parameters determined by XTEM, XSTM, and DCXRD, the field dependent photocurrent spectra were simulated using a six-band effective bond-orbital model. The theoretical calculations are in excellent agreement with experimental data. When used to fabricate p-type InGaAs/InP quantum-well infrared photodetectors (QWIPs), and combined with the high responsivity of 8.93 μm n-type InGaAs/InP QWIPs, these structures offer the possibility of dual band monolithically integrated QWIPs.
Original language | English (US) |
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Pages (from-to) | 1382-1388 |
Number of pages | 7 |
Journal | Journal of Electronic Materials |
Volume | 26 |
Issue number | 12 |
DOIs | |
State | Published - Dec 1997 |
Keywords
- Gas source molecular beam epitaxy (MBE)
- InGaAs/InP
- Quantum well infrared photodetectors QWIPs
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Materials Chemistry