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Design and Development of Full-Spectrum Photodetectors

2025-01-09 17:37

In recent years, the booming optoelectronic industry has changed the world and extended into many aspects of life. Among them, photodetectors (PDs) with a wide response bandwidth from deep ultraviolet to visible to near-infrared serve as important optoelectronic components and play a key role in daily life.
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08

2025-01

Black arsenene multi-spectral integrated field-effect transistors, aiding high-resolution imaging and enhanced secure communication.

With the development of modern communication technology, the demand for broadband, room-temperature infrared, and terahertz (THz) detectors has rapidly increased. These detectors play a crucial role in fields such as telecommunications, security inspection, non-destructive testing, and medical diagnostics. However, existing optical detectors face challenges such as high intrinsic dark current and the need for low-temperature cooling, which limit their efficiency in detecting low-energy photons. Particularly in the terahertz band, the photon energy is insufficient to excite electron transitions from the valence band maximum (VBM) to the conduction band minimum (CBM), making effective optoelectronic conversion difficult. Therefore, researchers have been seeking ultra-broadband detectors that can operate at room temperature and respond to wavelengths ranging from visible light to the terahertz band.

31

2024-12

Next-generation high-quality, low-cost revolutionary full infrared band imaging technology

According to a report by Maimus Consulting, recently, Professor Mohsen Rahmani from Nottingham Trent University (NTU) and his research team announced that they are developing a revolutionary infrared imaging technology that can achieve high-resolution imaging across the entire infrared spectrum. This breakthrough is expected to completely change the limitations of existing technologies.

26

2024-12

Mid-infrared nonlinear Fourier stacked imaging

Mid-infrared imaging can obtain unique information such as target radiation temperature and chemical composition, and has wide applications in fields such as biomedical science, materials science, and environmental monitoring. For a long time, the development of large field of view, high resolution, and high sensitivity mid-infrared imaging technology has been an important goal pursued in the field of infrared measurement and control, providing key support to meet the application needs of extreme scenarios such as high throughput and low illumination, for example, long-distance infrared remote sensing, deep penetration imaging, low light toxicity biological tissue observation, and non-destructive detection of photosensitive materials.

23

2024-12

Using liquid crystal integrated metasurfaces to achieve actively tunable terahertz surface wave broadband on-chip focusing.

Terahertz functional devices have significant application value in fields such as radar, high-resolution imaging, and biochemical sensing.

13

2024-12

Wide-band Nb₃Se₁₂I photodetector, aiding ultra-wideband detection and encrypted imaging applications

With the development of the digital age, the demand for enhanced information transmission and storage technologies has been growing explosively, and information security is receiving increasing attention.

10

2024-12

A general optoelectronic imaging platform based on two-dimensional semiconductor wafer-level integration, aiding in near-infrared night vision imaging and short-wave infrared material recognition.

Photodetectors (PD) are crucial in modern society as they can detect various light-based signals.

06

2024-12

Chiral Super-dispersion: A New Mechanism for Spectral Imaging

In the context of rapid advancements in technologies such as autonomous driving, medical diagnosis, and environmental remote sensing, traditional imaging systems can only capture intensity information of red, green, and blue light, and cannot provide more precise spectral data. However, this data is crucial for material identification, health diagnosis, and environmental monitoring. With the development of artificial intelligence, modern intelligent systems urgently require spectral imaging technology that can provide richer information to perceive the world more comprehensively.

05

2024-12

Near-infrared spectroscopy technology combined with mechanical vibration detection aids in rapid mapping for biomechanics and subcutaneous diagnosis.

In the field of modern medical diagnostics, the assessment of the biomechanical properties of the skin has always been an important and challenging topic.

04

2024-12

Chip-level computational reconstruction near-infrared spectral sensor

Micro-spectrometers show great potential in in-situ, in vitro, and even in vivo sensing applications. However, the significant performance limitations brought about by the reduction in the size of spectrometers make it difficult to meet the stringent demands of spectroscopy (high resolution, high precision, and ultra-wide operating bandwidth).

04

2024-12

Thermochromic micro-patterned hydrogels: Breaking through the challenge of compatibility between rapid invisibility and intelligent light control.

Currently, about 15% of global electricity is used each year to neutralize the temperature rise caused by solar heating, in order to create a comfortable working temperature environment.