A5080796320- Advanced Semiconductor Detectors and Materials
- Infrared Target Detection Methodologies
- Chalcogenide Semiconductor Thin Films
- Calibration and Measurement Techniques
- CCD and CMOS Imaging Sensors
- Advanced X-ray and CT Imaging
- Semiconductor Quantum Structures and Devices
- Radiation Detection and Scintillator Technologies
- Spectroscopy and Laser Applications
- Particle Detector Development and Performance
- Advanced Optical Sensing Technologies
- Thermography and Photoacoustic Techniques
- Quantum Dots Synthesis And Properties
- Ion-surface interactions and analysis
- Seismic Imaging and Inversion Techniques
- Stellar, planetary, and galactic studies
- Integrated Circuits and Semiconductor Failure Analysis
- Particle Accelerators and Free-Electron Lasers
- Optical Systems and Laser Technology
- Adaptive optics and wavefront sensing
- Solid-state spectroscopy and crystallography
- Superconducting and THz Device Technology
- Medical Imaging Techniques and Applications
- Electron and X-Ray Spectroscopy Techniques
- Particle accelerators and beam dynamics
CEA LETI
2013-2024
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2013-2024
CEA Grenoble
2015-2024
Université Grenoble Alpes
2013-2023
Institut polytechnique de Grenoble
2013-2019
This paper presents recent developments done at CEA-LETI Infrared Laboratory on processing and characterization of p-on-n HgCdTe (MCT) planar infrared focal plane arrays (FPAs) in LWIR VLWIR spectral bands. These FPAs have been grown using liquid phase epitaxy (LPE) a lattice matched CdZnTe substrate. technology lower dark current serial resistance comparison with n-on-p vacancy doped architecture is well adapted for low flux detection or high operating temperature. has evaluated space...
SWAPc (Size, Weight And Power-cost) is a strong trend in IR imaging systems. It requires focal plane arrays with smaller pixels, operating at high temperatures. For MW systems, the full spectral band (up to 5μm) shows advantage over blue (4.1µm) as it maximizes number of incoming photons from room temperature scene. Few years ago, LETI and Lynred have been developing 7.5μm pitch MCT band. The first version this technology was based on n/p diodes 110K maximum temperature. Switching p/n using...
In the past few years, CEA LETI demonstrated MCT P on N photodiodes arrays achieving high level of detection for very low flux astronomy in short wave infrared (SWIR), with dark currents values as 3 10<sup>−3</sup> e-/s/pixel at 100K and quantum efficiency. Persistence was also a key element to monitor development this technology, significant improvements were frame ALFA program. From reference developed brand new process, focused decreasing defectiveness improving frequency stability MWIR...
One limitation of dark current for HOT HgCdTe MWIR detector is diffusion related to Auger generation mechanisms. However, this limit can be overcame using a fully depleted P-i-N diode structure. On the way toward PIN structures, we discuss on impact suppression partially fully-depleted photodiodes. Indeed, report evolution with temperature following trend line but also decreasing when increasing applied voltage in range 120-180K same detector. If SRH space charge region very low, an...
LYNRED is oriented towards excellence in II-VI, III-V and bolometers technologies, covering all Society's needs term of infrared detection.Our vision to preserve protect, more than ever, our goal provide the right technology field missions, spatial industrial applications, generally customers' needs.For this purpose we are developing for next generation pitch, MCT HOT technology, extended MW band as well blue technology.Many challenges have be addressed future small large format...
MCT p-on-n photodiodes manufactured at Lynred and CEA-LETI have demonstrated state of the art performances for HOT applications. On blue red mid infrared bands on 15μm pixel pitch, respectively 150 130K operating temperatures been obtained, due to diffusion limited dark current low defectivity. To achieve equivalent results smaller pixel, technology DEFIR, joint laboratory between CEA-LETI, has improved. The technological process was modified ensure a proper diode formation efficiently...
HgCdTe (MCT) is a very versatile material for IR detection. Indeed, the ability to tailor cutoff frequency as close possible detection needs makes it perfect candidate high performance in wide range of applications and spectral ranges. Moreover, quality available today, either by liquid phase epitaxy (LPE) or molecular beam (MBE) allows low dark currents at temperatures make suitable flux application such science imaging. MCT has also demonstrated its robustness aggressive space environment...
For several years now, LYNRED, CEA-LETI and CEA-IRFU have been involved in the development of large area, very high performance NIR retinas for astronomy, context ALFA program (Astronomical Large Format Array). It aims at demonstrating ability to produce Europe low flux 2kx2k arrays exhibiting performances required by science applications. In this context, means dark current (below 0.1 e/s/px) with QE (above 80%). LETI LYNRED succeeded year fabrication a array, uniformity as characterized...
HgCdTe is very unique material system for infrared (IR) detection. In combination with its lattice matched native substrate CdZnTe, this semiconductor alloy allows to address the whole band, from near IR (NIR, 2?m cutoff) middle wave (MWIR, 5μm cutoff), long (LWIR, 10μm up (VLWIR, cutoffs larger than 14μm).
LYNRED is a leading global provider of high-quality II-VI, III-V and bolometers infrared detectors for the aerospace, defence commercial markets. Our vision to preserve protect, provide right technology customers' needs. To consolidate our position among detector manufacturer leaders enable us respond growing market demand next-generation technologies, new state art industrial facility breaking ground. This site named Campus will double current cleanroom footprint increase production...
For several years, CEA-LETI has worked on the development of IR MCT detectors for low flux applications in scientific imaging. remarkable material properties that allow highly performing detection, with high QEs and minimal dark currents. Currently, both Teledyne US LETI-Lynred France achieve currents range a fraction e/s/pixel NIR imaging, utilizing p-on-n extrinsic diode structure, astronomy applications. As part NEOCAM project, demonstrated ability to extend cut-off wavelength...