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Rapidly evolving group‐10 transition metal dichalcogenides (TMDCs) offer remarkable electronic, optical, and mechanical properties, making them promising candidates for advanced optoelectronic applications. Compared to most TMDCs semiconductors, group‐10‐TMDCs possess unique structures, narrow bandgap, and influential physical properties that motivate the development of broadband photodetectors, specifically...
Ultra‐Narrow Linewidth Photo‐Emitters
In article number 2204302, Khurram Shehzad, Hui Wu, Zhiming Wang, and co‐workers report that hot‐pressing bulk Selenium into nanoflakes induces structural changes in the Selenium lattice, which leads to ultra‐narrow bandwidth photoemission with full width at half maximum of 330 ± 90 μeV, an order of magnitude narrower than the other 2D materials at 300 K.
Photoluminescence (PL) in state‐of‐the‐art 2D materials suffers from narrow spectral coverage, relatively broad linewidths, and poor room‐temperature (RT) functionality. The authors report ultra‐narrow linewidth photo‐emitters (ULPs) across the visible to near‐infrared wavelength at RT in polymorphic selenium nanoflakes (SeNFs), synthesized via a hot‐pressing strategy. Photo‐emitters in NIR exhibit...
The arrival of the information explosion era is urging the development of large‐bandwidth high‐data‐rate optical interconnection technology. Up to now, the biggest stumbling block in optical interconnections has been the lack of efficient light sources despite significant progress that has been made in germanium‐on‐silicon (Ge‐on‐Si) and III‐V‐on‐silicon (III‐V‐on‐Si) lasers. 2D materials and metal...
Nanolasers, with small footprint and ultralow threshold, are promising for applications in data communication, on‐chip optical computing, and optical interconnects. In addition to the microcavity design, the choice of gain material is another critical factor determining the optical performance of nanolasers. 2D materials are widely studied and applied in nanoscale optoelectronic devices due to their...
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