Shortwave infrared for night vision applications: illumination levels and sensor performance

Adomeit, Uwe; Krieg, J.

doi:10.1117/12.2193738

Cited by 9 publications

(3 citation statements)

References 20 publications

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“…The development of short-wave infrared (SWIR, 1–2 μm) photodetectors enables a huge number of applications, such as LIDAR and 3D imaging for mobile devices, automotive and augmented/virtual reality (AR/VR), night vision for surveillance, spectroscopy for food quality inspection, , bioimaging, etc., − leading to a direct and huge impact on the quality of life, health, and security, provided that such photodetectors are available at low cost and in high volumes, to serve consumer electronics markets. The epitaxial technology, mainly based on indium gallium arsenide (InGaAs), has dominated the SWIR photodetector industry for decades but has only served for niche and military markets due to the characteristics of low-scale manufacturability, high production costs, and complementary metal oxide semiconductor (CMOS) incompatibility …”

mentioning

confidence: 99%

InSb/InP Core–Shell Colloidal Quantum Dots for Sensitive and Fast Short-Wave Infrared Photodetectors

Peng,

Wang,

Ren

et al. 2024

ACS Nano

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Colloidal quantum dot (CQD) technology is considered the main contender toward a low-cost high-performance optoelectronic technology platform for applications in the short-wave infrared (SWIR) to enable 3D imaging, LIDAR night vision, etc. in the consumer electronics and automotive markets. In order to unleash the full potential of this technology, there is a need for a material that is environmentally friendly, thus RoHS compliant, and possesses adequate optoelectronic properties to deliver high-performance devices. InSb CQDs hold great potential in view of their RoHS-compliant nature and�in principle�facile access to the SWIR. However, to date progress in realizing high-performance optoelectronic devices, including photodetectors (PDs), has been limited. Here, we have developed a synthesis method for producing size-tunable InSb CQDs with distinct excitonic peaks spanning a wide range from 900 to 1750 nm. To passivate the surface defects and enhance the photoluminescence (PL) efficiency of InSb CQDs, we further designed an InSb/InP core−shell structure. By employing the InSb/InP core−shell CQDs in a photodiode device stack, we report on robust InSb CQD SWIR photodetectors that exhibit an external quantum efficiency (EQE) of 25% at 1240 nm, a wide linear dynamic range exceeding 128 dB, a photoresponse time of 70 ns, and a specific detectivity of 4.4 × 10 11 jones.

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mentioning

confidence: 99%

InSb/InP Core–Shell Colloidal Quantum Dots for Sensitive and Fast Short-Wave Infrared Photodetectors

Peng,

Wang,

Ren

et al. 2024

ACS Nano

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“…SWIR has potential for better nighttime imaging of the background for orientating the operator and for multiband target discrimination. This is because the nightglow peaks in the SWIR and on moonless nights illumination in this band is typically several times larger than in the visible range [ 102 , 103 ]. Thus SWIR cameras can sometimes provide enhanced night imagery that is similar to daytime images from the same camera.…”

Section: Sensors Enabling Improved Airborne Fire Detectionmentioning

confidence: 99%

Airborne Optical and Thermal Remote Sensing for Wildfire Detection and Monitoring

Allison

Johnston

Craig

et al. 2016

Sensors

215

109

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For decades detection and monitoring of forest and other wildland fires has relied heavily on aircraft (and satellites). Technical advances and improved affordability of both sensors and sensor platforms promise to revolutionize the way aircraft detect, monitor and help suppress wildfires. Sensor systems like hyperspectral cameras, image intensifiers and thermal cameras that have previously been limited in use due to cost or technology considerations are now becoming widely available and affordable. Similarly, new airborne sensor platforms, particularly small, unmanned aircraft or drones, are enabling new applications for airborne fire sensing. In this review we outline the state of the art in direct, semi-automated and automated fire detection from both manned and unmanned aerial platforms. We discuss the operational constraints and opportunities provided by these sensor systems including a discussion of the objective evaluation of these systems in a realistic context.

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“…In near-wave infrared (NWIR) detection, the design and fabrication of high performance InGaAs PDs has been previously reported [4]. High-indium (In) In x Ga 1−x As (x > 0.53) PDs covering the longer part of the SWIR wavelength (1.7-3 µm) range have attracted much attention in remote sensing, including in applications such as Earth resource observation, environmental monitoring, and night vision [5][6][7][8][9]. InGaAs PDs are favored due to their high sensitivity, rapid response time, and superior performance in the near-infrared region.…”

Section: Introductionmentioning

confidence: 99%

Effects of Diffusion Barrier Layers on the Performance of Lattice-Mismatched Metamorphic In0.83Ga0.17As Photodetectors

Jiao,

Guo,

Zhou

et al. 2024

Electronics

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In the planar-type InGaAs photodetector (PD) structure, a diffusion barrier has the effect of modifying the zinc diffusion profile in the interface between the cap and the absorption layer to improve device performance. In this work, an n-type In0.83Ga0.17As diffusion barrier layer (DBL) is employed between the In0.83Al0.17As cap layer and the low-doped In0.83Ga0.17As absorption layer of a lattice-mismatched metamorphic In0.83Ga0.17As PD. The device performance of the In0.83Ga0.17As PDs in terms of dark current, quantum efficiency, and capacitance were simulated and compared to experimental results. The effects of the thickness and doping concentration of the DBL on PD performance were analyzed and shown to be optimized at both 300 K and 200 K. Based on the simulation results, the electron concentration of the DBL is recommended to be 3×1016–5×1016 cm−3 and a thickness of 0.1 μm is suggested.

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Shortwave infrared for night vision applications: illumination levels and sensor performance

Cited by 9 publications

References 20 publications

InSb/InP Core–Shell Colloidal Quantum Dots for Sensitive and Fast Short-Wave Infrared Photodetectors

InSb/InP Core–Shell Colloidal Quantum Dots for Sensitive and Fast Short-Wave Infrared Photodetectors

Airborne Optical and Thermal Remote Sensing for Wildfire Detection and Monitoring

Effects of Diffusion Barrier Layers on the Performance of Lattice-Mismatched Metamorphic In0.83Ga0.17As Photodetectors

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