Manufacturability of type-II InAs/GaSb superlattice detectors for infrared imaging
| Autor: | Linda Höglund, Sergiy Smuk, Carl Asplund, Himanshu Kataria, R. Marcks von Würtemberg, Henk Martijn, Eric Costard, Anders Gamfeldt |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Infrared business.industry Superlattice Detector Equivalent temperature Temporal noise 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Design for manufacturability 010309 optics Wavelength Optics 0103 physical sciences Optoelectronics 0210 nano-technology business Dark current |
| Zdroj: | Infrared Physics & Technology. 84:28-32 |
| ISSN: | 1350-4495 |
| Popis: | Type-II InAs/GaSb superlattice detectors and focal plane arrays (FPAs) with cut-off wavelength at 5.1 μm have been studied. For single pixel devices, dark current densities of 1 × 10 −6 A/cm 2 and quantum efficiencies of 53% were measured at 120 K. From statistics of manufactured FPAs, an average FPA operability of 99.87% was observed. Furthermore, average temporal and spatial noise equivalent temperature difference (NETD) values of 12 mK and 4 mK, respectively, were deduced. Excellent stability of FPAs after non-uniformity correction was observed with no deterioration of the ratio between spatial and temporal noise during a two hour long measurement. Also after several cooldowns the ratio between spatial and temporal NETD stayed below 0.6. |
| Databáze: | OpenAIRE |
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