Semiconductors from molecular, nano, and hybrid materials are emerging as playgrounds for novel physics and for applications in optoelectronics. In conventional inorganic semiconductors, charge carrier motion is understood as a single particle in momentum space (band structure) and its scattering with phonons and charged defects. However, such a single particle picture breaks down in these emerging semiconductors, where strong electron-phonon coupling leads to the formation of quasi-particles, i.e., polarons, whose properties can deviate from band electrons in major ways. One may also take advantage of such electron-phonon coupling to explore new physical processes, such as electronic phase transitions and charge carrier protection.

Ultrafast electron-phonon interaction in emerging semiconductors

256th National Meeting (2018)

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