CIF assists Professor Liu Chang's team in breaking through the limits of infrared detection, and their original achievement reaches the top of Nature Communications!

The top international journal Nature Communications has published a groundbreaking research result by Professor Liu Chang's team, in collaboration with institutions such as Hunan University, Peking University, and CIF, titled 'Sub Py'an Dark Current Infrared Photodetection: The Innovative Path of Polarized Water Intercalated Heterojunctions'.

This is another milestone for the Chinese team in the field of infrared detection materials! The paper uses innovative "ultra-thin polarized water barrier" technology to compress the dark current of the device to 0.02 picoamps, with room temperature performance comparable to commercial refrigeration detectors, injecting a "Chinese solution" into the global development of infrared technology!

By constructing ultra-thin polarization barriers through water molecule intercalation, the energy band engineering problem of traditional barrier detectors has been solved, demonstrating the enormous potential of two-dimensional materials in infrared optoelectronic detection. This work provides a new paradigm for the development of high-performance, high-temperature infrared detectors.

In the core preparation process of the device, CIF customized electric heating plates have become a key support:

Precise temperature control: 30 ℃± 0.1 ℃ constant temperature control ensures uniform adsorption of water molecules on the PdSe ₂ surface, constructing a 0.75 nanometer polarized water layer.

Process innovation: By controlling the saturated steam in a sealed container, the two-dimensional material interface achieves an ordered arrangement of water molecules at the atomic level, breaking through the limitations of traditional vacuum processes.