Stern Chen, Twitto Avraham, Snitkoff Rifael Z, Fleger Yafit, Saha Sabyasachi, Boddapati Loukya, Jain Akash, Wang Mengjing, Koski Kristie J, Deepak Francis Leonard, Ramasubramaniam Ashwin, Naveh Doron
Faculty of Engineering, Bar-Ilan University, Ramat-Gan, 52900, Israel.
Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 52900, Israel.
Adv Mater. 2021 Jun;33(23):e2008779. doi: 10.1002/adma.202008779. Epub 2021 May 6.
The intercalation of layered compounds opens up a vast space of new host-guest hybrids, providing new routes for tuning the properties of materials. Here, it is shown that uniform and continuous layers of copper can be intercalated within the van der Waals gap of bulk MoS resulting in a unique Cu-MoS hybrid. The new Cu-MoS hybrid, which remains semiconducting, possesses a unique plasmon resonance at an energy of ≈1eV, giving rise to enhanced optoelectronic activity. Compared with high-performance MoS photodetectors, copper-enhanced devices are superior in their spectral response, which extends into the infrared, and also in their total responsivity, which exceeds 10 A W . The Cu-MoS hybrids hold promise for supplanting current night-vision technology with compact, advanced multicolor night vision.
层状化合物的嵌入开辟了一个广阔的新型主客体杂化材料空间，为调节材料性能提供了新途径。在此，研究表明，铜的均匀连续层可以嵌入块状MoS的范德华间隙中，从而形成一种独特的Cu-MoS杂化物。这种新的Cu-MoS杂化物仍为半导体，在约1eV的能量处具有独特的等离子体共振，从而增强了光电活性。与高性能的MoS光电探测器相比，铜增强型器件在光谱响应（延伸至红外区域）和总响应度（超过10 A/W）方面表现更优。Cu-MoS杂化物有望用紧凑、先进的多色夜视技术取代当前的夜视技术。
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