Strong Quantum Confinement Effect in the Optical Properties of Ultrathin α‐In2Se3. Issue 12 (16th August 2016)

• Record Type: Journal Article
• Authors: Quereda, Jorge; Biele, Robert; Rubio‐Bollinger, Gabino; Agraït, Nicolás; D'Agosta, Roberto; Castellanos‐Gomez, Andres
• Is Part Of: Advanced optical materials. Volume 4:Issue 12(2016:Dec.)
• Page Start: 1939
• Page End: 1943
• Publication Date: 2016-08-16
• Subjects: hyperspectral imaging -- In2Se3 (indium selenide) -- quantum confinement -- thickness‐dependent band gaps; Optical materials -- Periodicals; Photonics -- Periodicals; 620.11295
• DOI: 10.1002/adom.201600365
• Languages: English
• ISSNs: 2195-1071

Abstract

Abstract : The effect of quantum confinement in the optical absorption spectra of atomically thin α‐In2 Se3 crystals is studied, observing a huge thickness‐dependent shift in the optical band gap of exfoliated α‐In2 Se3 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.