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Theoretical Study of Quaternary nBp InGaAsSb SWIR Detectors for Room Temperature Condition
Tetiana Manyk1, Jarosław Rutkowski1, Małgorzata Kopytko1
1Institute of Applied Physics, Military University of Technology, 2 Kaliskiego St., 00-908 Warsaw, Poland.
Materials (Basel, Switzerland)
|November 27, 2024
Summary
This study analyzes room-temperature infrared barrier detectors made from AIIIBV materials. Simulations show high performance is achievable, with Shockley-Read-Hall recombination significantly impacting carrier transport.
Area of Science:
- Materials Science
- Semiconductor Physics
- Optoelectronics
Background:
- Infrared barrier detectors are crucial for various applications.
- Room-temperature operation is highly desirable for practical infrared sensing.
- AIIIBV quaternary compounds offer tunable properties for optoelectronic devices.
Purpose of the Study:
- To theoretically analyze the performance of an nBp infrared barrier detector operating at room temperature.
- To investigate the impact of material composition and device structure on detector performance.
- To confirm the feasibility of fabricating high-performance room-temperature infrared detectors using AIIIBV materials.
Main Methods:
- Theoretical analysis using numerical simulations with Crosslight Software's APSYS package.
- Determination of band structure and electric field distribution.
- Analysis of carrier transport mechanisms, including Shockley-Read-Hall (SRH) recombination.
Main Results:
- Shockley-Read-Hall (SRH) recombination is critical for carrier lifetimes under 100 ns.
- Absorber thickness significantly influences quantum efficiency, peaking around 3 μm.
- Device performance is not affected by valence band offset.
- Barrier doping level impacts detector parameters.
Conclusions:
- High-performance room-temperature infrared barrier detectors can be fabricated using AIIIBV quaternary compounds.
- Optimizing absorber thickness is key to maximizing quantum efficiency.
- Understanding carrier transport mechanisms like SRH recombination is vital for device design.
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