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| Indium antimonide | |
|---|---|
| Name | Indium antimonide |
| Formula | InSb |
| Molar mass | 226.71 g·mol−1 |
| Appearance | silver-gray crystalline |
| Density | 5.77 g·cm−3 |
| Melting point | 525 °C |
| Crystal structure | zincblende |
Indium antimonide is a III–V binary semiconductor composed of indium and antimony used widely in infrared detection, high-speed electronics, and quantum devices. Developed through research in solid-state physics and materials science at institutions such as Bell Labs, MIT, and Stanford University, it bridges historical advances made by researchers affiliated with Bell Telephone Laboratories, University of Cambridge, and Max Planck Society. Its properties made it central to programs at industrial laboratories including IBM, Texas Instruments, and Honeywell.
Indium antimonide consists of indium from the group led historically by investigators like William Shockley and antimony studied by chemists in the tradition of Justus von Liebig, forming a binary III–V lattice analogous to other compounds investigated at Bell Labs and AT&T. The compound adopts the cubic zincblende structure shared with materials characterized by teams at Rutherford Appleton Laboratory and Los Alamos National Laboratory, similar to lattices documented by crystallographers at Royal Society sections and groups at Max Planck Institute for Solid State Research. Unit cell parameters determined in studies by researchers associated with Harvard University and ETH Zurich match expectations from semiconductor theory advanced at Princeton University.
Indium antimonide exhibits a narrow direct band gap, a high electron mobility explored in textbooks from Cambridge University Press and papers from groups at Columbia University and University of Tokyo. Carrier dynamics and Hall effect measurements, topics developed in laboratories like Oak Ridge National Laboratory and Argonne National Laboratory, show electron mobilities among the highest of III–V compounds, comparable in context to mobility studies performed on materials at Sandia National Laboratories and Imperial College London. Thermal and mechanical parameters measured in collaborations with teams from Lawrence Berkeley National Laboratory and National Institute of Standards and Technology align with reports in proceedings of conferences held by IEEE and Materials Research Society.
Bulk and epitaxial growth techniques for this semiconductor include Bridgman methods refined at General Electric research centers, molecular beam epitaxy protocols developed at Bell Labs and IBM Research, and metalorganic chemical vapor deposition approaches advanced at Northrop Grumman and RCA Corporation. Chemical vapor transport, vapor–liquid–solid growth, and liquid phase epitaxy procedures have been optimized in laboratories at University of California, Berkeley and University of Illinois Urbana-Champaign by scientists collaborating with agencies such as DARPA and the European Space Agency. Substrate choices and heteroepitaxy align with work on lattice matching practiced at Stanford Linear Accelerator Center and Forschungszentrum Jülich.
This compound forms the active material in infrared detectors used on platforms operated by agencies like NASA and ESA, and in focal plane arrays developed with industrial partners such as Raytheon and BAE Systems. High-electron-mobility transistors leveraging its mobility influenced research at Intel and performance testing modeled on standards from SEMATECH and JEDEC. Quantum wells, superlattices, and nanostructures incorporating this semiconductor have been pursued by teams at MIT Lincoln Laboratory, Caltech, and University of Cambridge for applications in spectroscopy, communications, and sensor systems employed by programs at DARPA and Lockheed Martin.
Its direct band gap and strong absorption in the long-wavelength infrared were characterized in spectroscopy studies reported in journals associated with editorial boards at Nature Publishing Group and American Physical Society conferences hosted by SPIE. Devices exploiting intersubband transitions and plasmonic responses were developed in projects at University of Oxford and EPFL, while cryogenic performance has been evaluated in facilities used by CERN and Max Planck Institute for Quantum Optics. Infrared detectors and thermal imaging cameras incorporating this material became components in instrument suites of missions from European Southern Observatory collaborations and airborne platforms operated by NOAA.
Handling protocols reference standards from Occupational Safety and Health Administration and testing guidance from World Health Organization and International Labour Organization; industrial hygiene practices implemented by firms such as Siemens and DuPont apply to antimony-containing compounds. Waste management and exposure limits are managed under frameworks developed by Environmental Protection Agency and regulated in many jurisdictions in coordination with agencies like Health Canada and European Chemicals Agency. Laboratory-scale synthesis follows procedures taught at institutions including Johns Hopkins University and Yale University under oversight from institutional review boards and safety offices associated with National Institutes of Health training modules.
Contemporary research spans topological phases, hybrid superconducting heterostructures, and low-dimensional systems investigated in consortia including Quantum Flagship, US National Quantum Initiative, and partnerships between MIT and Harvard University. Related III–V materials such as gallium arsenide studied at Stanford University, indium phosphide developed at Bell Labs, and bismuth compounds explored at Cornell University provide comparative contexts. Advances in nanofabrication and device integration in centers like Kavli Institute and National Nanotechnology Infrastructure Network continue to expand applications, with multidisciplinary collaborations involving Max Planck Society, Lawrence Livermore National Laboratory, and academic groups across University of California campuses.
Category:Semiconductor materials