Our country has conquered the new technology of short-wave infrared imaging chips, and the cost has been reduced to one percent of the traditional method.

According to news on March 7, Hubei Optics Valley Laboratory recently announced that the colloidal quantum dot imaging chip developed by its scientific research team has achieved short-wave infrared imaging , with an area array size of 300,000, a blind element rate of less than 6‰, and a wavelength range of 0.4-1.7 microns. , the dark current density is less than 50nA/cm2, the external quantum efficiency is higher than 60%, and it is known as "superior performance".

According to the relevant person in charge, the core advantages of this technology are:

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• The image resolution is high, and the theoretical pixel size is only limited by the diameter of the Airy disk;

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• Solution method low-temperature processing, compatible with substrates of any shape;

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• The detection band is highly customizable and is not affected by substrate absorption;

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• It can be processed on a large area and is compatible with the 12-inch CMOS wafer preparation process. "At the same time, the cost is extremely low and it is expected to subvert the market."

Optics Valley Laboratory stated that in industrial applications such as food testing and semiconductor testing, machine vision based on short-wave infrared imaging is like the "eyes" of the machine and is of great significance. As the core component of the imaging system, the imaging chip plays a decisive role in both imaging quality and camera cost.

Traditional indium gallium arsenide shortwave infrared chips are extremely expensive, making the average price of shortwave infrared cameras as high as 250,000 yuan, severely restricting market growth.

The Optics Valley Laboratory team has spent 4 years working hard on quantum dot technology. Through a low-temperature solution preparation process, it has realized a quantum dot short-wave infrared imaging chip that can be integrated with silicon-based chips. Its detection band range far exceeds that of traditional indium and gallium. Arsenic chips, while costing less than one percent to manufacture.

▲ Some application fields of products

At present, the Optics Valley Laboratory team has applied for 15 invention patents, targeting consumer application scenarios such as mobile phone modules and vehicle cameras, and has been authorized for seven. Products have been used in vehicle applications, fruit sorting, material detection, semiconductor detection, security monitoring and other fields.

IT House inquired and learned that Hubei Optics Valley Laboratory was established in 2017 and is committed to solving key issues restricting the development of science and technology in my country. The research directions cover optoelectronic technology, high-end equipment manufacturing, artificial intelligence and other fields to enhance the original innovation capabilities in the optoelectronics field, Our mission is to break through the key technological bottlenecks in the development of the optoelectronic industry, and we take basic research, applied basic research and applied research as our mission to create a comprehensive optoelectronic research platform that is strategic, forward-looking, and fundamental in technological innovation.