🔬 physics
Terahertz Spectroscopy of Femtosecond-Laser-Induced Frequency Upshifts of the Transverse Optical Phonons in CuInSe2 Nanoparticles
This study demonstrates that ultrafast terahertz spectroscopy reveals frequency upshifts in the transverse optical phonons of CuInSe2 nanoparticles caused by optically induced charge transfer, which reduces the effective ionic charges at lattice sites in this non-centrosymmetric crystal.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer
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