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arXiv · 1610.05505

Strong quantum confinement effect in the optical properties of ultrathin α-In2Se3

Jorge Quereda·Robert Biele·Gabino Rubio-Bollinger·Nicolás Agraït·Roberto D'Agosta·Andres Castellanos-Gomez
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Abstract

The effect of quantum confinement in the optical absorption spectra of atomically thin α-In2Se3 crystals is studied, observing a huge thickness-dependent shift in the optical band gap of exfoliated α-In2Se3 flakes. The band gap variation reported here is among the largest found in semiconductor crystals and spans a region of the near-UV spectrum uncovered by other 2D semiconductors.

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Jorge Quereda, Robert Biele, Gabino Rubio-Bollinger, Nicolás Agraït, Roberto D'Agosta, Andres Castellanos-Gomez. 2016-10-18. Strong quantum confinement effect in the optical properties of ultrathin α-In2Se3. https://doi.org/10.1002/adom.201600365

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