Room-Temperature Raman Enhancement in Colloidal 2D PbS Nanosheets
Sabin Aryal, Yiteng Tang, Liangfeng Sun · 2026
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Description
Sabin Aryal, Yiteng Tang, and Liangfeng Sun report a strikingly strong Raman signal from flat lead sulfide sheets at room temperature. Raman scattering reads lattice vibrations, and in tiny quantum dots the signal usually stays faint unless surfaces oxidize. Their two dimensional sheets, grown in solution, outshone dot samples by orders of magnitude without any such help.
Two effects team up in the sheets, the authors argue. Vibrations stay in step across the wide flat lattice, and a step like spread of energy states boosts coupling between light born charges and those vibrations. As porous dot networks merge into smooth sheets, the peak sharpens and swells. Aryal and the team frame the effect as a clean probe of lattice motion in flat quantum materials.
Catalog record
| CREATOR | Sabin Aryal, Yiteng Tang, Liangfeng Sun |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 13 KB |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |