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Enhanced down conversion of photons emitted by photoexcited Er <inf>x</inf>Y<inf>2-x</inf>Si<inf>2</inf>O<inf>7</inf> films grown on silicon

Miritello, M and Lo Savio, R and Cardile, P and Priolo, F (2010) Enhanced down conversion of photons emitted by photoexcited Er <inf>x</inf>Y<inf>2-x</inf>Si<inf>2</inf>O<inf>7</inf> films grown on silicon. Physical Review B - Condensed Matter and Materials Physics, 81. ISSN 1098-0121

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Abstract

Photon cutting with efficiencies up to 400% is demonstrated in Erx Y2-x Si2 O7 films grown on Si and its concentration dependence is analyzed. The cutting is the result of cross-energy-transfer processes occurring within a single rare earth (Er3+) acting as both sensitizer and activator. Similarities with upconversion are revealed and possible applications in solar cells are discussed. © 2010 The American Physical Society.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 02 Sep 2016 16:17
Last Modified: 29 Sep 2016 11:32
DOI: