Extension of p-on-n II-VI HOT technology to the LW and VLW spectral bands at LYNRED

LYNRED is a leading global provider of high-quality II-VI, III-V and bolometers infrared detectors for the aerospace, defence and commercial markets. Our vision is to preserve and protect, and provide the right technology to customers’ needs. To consolidate our position among infrared detector manufacturer leaders and to enable us to respond to growing market demand for next-generation infrared technologies, a new state of the art industrial facility is breaking ground. This new industrial site named Campus will double the current cleanroom footprint and increase production capacity with optimal cleanliness classification for new high-performance products.

Thanks to its joint laboratories with the CEA-Leti, DEFIR, its academic partners and its vertical industrial model, LYNRED has been at the forefront of improving the quality of CdZnTe substrates and HgCdTe epitaxial layers. Based on this advanced material growth and process technologies, LYNRED has developed cutting-edge HOT p-on-n technology for the extended MW band. This improvement in HOT mercatel technology has been expanded to LW and VLW bands for applications in the spatial and tactical domains. In this article, we will review recent developments in LW p-on-n technology with a 9.5 μm cut-off wavelength and in VLW p-on-n technology with a 15 μm cut-off wavelength at 80 K,. We will present the latest results in terms of external quantum efficiency, dark current, operability, stability and reproducibility of Residual Fixed Pattern Noise (RFPN) and Modulation Transfer Function (MTF) optimisations.