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|Title:||Quantum confinement of quasi-two-dimensional E1 excitons in Ge nanocrystals studied by resonant Raman scattering||Authors:||Teo, K.L.
|Issue Date:||2000||Citation:||Teo, K.L.,Kwok, S.H.,Yu, P.Y.,Guha, S. (2000). Quantum confinement of quasi-two-dimensional E1 excitons in Ge nanocrystals studied by resonant Raman scattering. Physical Review B - Condensed Matter and Materials Physics 62 (3) : 1584-1587. ScholarBank@NUS Repository.||Abstract:||Ge nanocrystals of diameters ranging from 4 to 10 nm were synthesized by ion implantation of Ge+ ions into SiO2 films followed by annealing. Confinement of its optical phonon and of the quasi-two-dimensional E1 exciton have been observed at room temperature by resonant Raman scattering. The observed size-dependent blueshifts of the E1 excitons energy (which can be larger than 0.7 eV) are found to be in good agreement with a theoretical calculation based on the effective mass approximation. ©2000 The American Physical Society.||Source Title:||Physical Review B - Condensed Matter and Materials Physics||URI:||http://scholarbank.nus.edu.sg/handle/10635/81033||ISSN:||01631829|
|Appears in Collections:||Staff Publications|
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