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Design and Demonstration of Zero-Valence-Band-Offset InAs/InAsSb nBn LWIR Detector

Version 1.0

Kopytko, Malgorzata, 2026, "Design and Demonstration of Zero-Valence-Band-Offset InAs/InAsSb nBn LWIR Detector", https://doi.org/10.18150/4ZFY0W, RepOD, V1

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Description

Dear Scientist,

This database contains experimental data collected during the study:

"Design and Experimental Demonstration of a Zero-Valence-Band-Offset InAs/InAsSb nBn LWIR Detector",

funded by the National Science Centre, Poland (Grant reference: UMO-2023/51/B/ST7/02340).

The study focuses on the design, fabrication, and experimental validation of an optimized nBn LWIR detector architecture employing an AlGaAsSb barrier engineered to achieve nearly zero valence band offset (VBO) at the absorber–barrier interface.

The purpose of the project was to demonstrate that precise VBO engineering enables:

  • efficient minority-carrier extraction,
  • minimized interfacial recombination,
  • reduced operating bias,
  • improved responsivity-to-dark-current trade-off.

The file structure reflects measurement techniques used to validate device performance.

The database contains the following folders and files:

1. I-V_characteristics_zeroVBO (.xlsx)

Dark current density–voltage characteristics of optimized device

2. Spectral_responsivity_zeroVBO (.xlsx)

Spectral response and bias optimization data

This database is intended for researchers developing optimized barrier architectures and next-generation LWIR type-II superlattice nBn detectors.

Subject
Engineering; Physics
Keyword

Zero valence band offset nBn detector

Related Publication

M. Kopytko, G. Kołodziej, P. Baranowski, B. Seredyński, Ł. Kubiszyn, K. Michalczewski, J. Jureńczyk, K. Szlachetko, D. Smoczyński, and J. Piotrowski, “Valence Band Offset Engineering in LWIR InAs/InAsSb nBn Detectors,” IEEE Electron Device Letters 47(9), 1760–1762 (2026). https://doi.org/10.1109/LED.2026.3713619 doi: 10.1109/LED.2026.3713619

CC BY - Creative Commons Attribution 4.0 CC BY - Creative Commons Attribution 4.0

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readme.txt
Plain Text - 674 B - Sep 4, 2026 - 0 Downloads
MD5: ccfec18d421ba867b5bd4eb73be83faa
License: CC BY - Creative Commons Attribution 4.0
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I-V_characteristics_zeroVBO.csv
Comma Separated Values - 485.0 KB - Sep 4, 2026 - 0 Downloads
MD5: 6989bedd8ade6485d8db08cb9a21f170
License: CC BY - Creative Commons Attribution 4.0
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Spectral_responsivity_zeroVBO.csv
Comma Separated Values - 1.3 MB - Sep 4, 2026 - 0 Downloads
MD5: 835d77f86e90ea23f5e696f1ba14041a
License: CC BY - Creative Commons Attribution 4.0
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