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Showing 1 to 7 of 7 for “"Type-II superlattice"”.
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Antimony-based type-II superlattice infrared detectors
… have predicted high performance for InAs/GaSb type-II superlattice structures, which rely on mature growth of III-V semiconductors and offer many levels of freedom in design due to band structure engineering. This work focuses on the fabrication and characterization of type-II superlattice …
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Theory and experiments of type-II superlattice infrared photodetectors
The InAs/GaSb type-II superlattices have drawn extensive research interest in the past few decades. The type-II band alignment in this material system provides a long cutoff wavelength and a wide optical tunable range in the mid-infrared regime. Photodetectors based on type-II superlattices are …
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Theory and Experiment of Antimony-Based Type-Ii Superlattice Infrared Photodetectors
… currently considerable interest in InAs/InGaSb type-II superlattices because of their broken-gap type-II band alignment, which forms spatially indirect band gaps in the range of 3--30 mum. Combining the advantages of III-V epitaxial growth techniques and high sensitivity to normal incident …
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Antimony-based type-II superlattice infrared photodetectors on indium-arsenide substrates
… such as mercury cadmium telluride. While type-II superlattices over a number of advantages in design and material quality, theoretical predictions of their high performance have yet to be realized. This work concentrates on novel designs, fabrication, and characterization of type-II …
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Multispectral Metamaterial Detectors for Smart Imaging
… infrared detector using an ultra-thin type-II superlattice (T2-SL) detector coupled with a metamaterial absorber with 7X enhanced quantum efficiency. We also identify useful versus non-useful absorption through a combination of absolute absorption and quantum efficiency measurements. In …
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Antimonide-based type-II superlattices for infrared detection
… One of the more promising alternatives is the type-II superlattice (T2SL), which was first proposed for infrared detection in 1978 and has been theoretically predicted to perform better than any MCT detector. Some advantages of the T2SL are its vastly improved electrical properties, material …
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Characterization of, and novel architectures for, strained-layer superlattice infrared photodetectors
… are predominantly made of an expensive II-VI material, HgCdTe (mercury cadmium telluride, MCT). A viable alternative class of materials, the III-V type-II superlattices (T2SLs), have been actively studied due to several potential and predicted advantages over MCT. T2SLs offer an easier …