Chemical Engineering for "Pb-Free" Double Perovskite Short-Wave IR (SWIR) Materials

Benefit

USU researchers have created a promising alternative to conventional SWIR (short-wave infrared) detector materials. Traditionally, SWIR detectors rely on materials such as Indium Gallium Arsenide (InGaAs), Lead Sulfide (PbS), and Lead Selenide (PbSe). While effective, these materials come with significant drawbacks: they are hazardous to both human health and the environment, involve complex and costly synthesis processes, and are difficult to scale for widespread production. In contrast, this new technology utilizes non-toxic, low-cost, and more readily available materials. It also features a simplified synthesis method, making it easier to manufacture at scale. Despite the shift in materials, it retains the high absorbance and sensitivity needed for effective SWIR detection, making it a compelling, environmentally conscious, and economically viable replacement for traditional SWIR detectors.

Short-wave infrared (SWIR) materials are essential for detecting and imaging wavelengths in the 0.9 to 2.5 micrometer range, enabling visibility beyond the capabilities of traditional visible-light sensors. In industry, SWIR materials are widely used in applications such as semiconductor inspection, quality control in manufacturing, surveillance, agricultural monitoring, and biomedical imaging. These materials allow for the detection of moisture, heat signatures, and hidden defects, making them valuable for non-destructive testing and process optimization. In sectors like defense and security, SWIR is critical for night vision and target identification in low-light conditions. The unique ability of SWIR sensors to penetrate haze, smoke, and certain packaging materials also makes them indispensable in automated sorting and industrial inspection systems.

Market Application

Businesses in semiconductor inspection, manufacturing quality control, surveillance, agricultural monitoring, and biomedical imaging use SWIR materials.