TY - JOUR
T1 - Quantum Confinement Regimes in CdTe Nanocrystals Probed by Single Dot Spectroscopy
T2 - From Strong Confinement to the Bulk Limit
AU - Tilchin, Jenya
AU - Rabouw, Freddy T.
AU - Isarov, Maya
AU - Vaxenburg, Roman
AU - Moes, Relinde
AU - Lifshitz, Efrat
AU - Vanmaekelbergh, Daniel
PY - 2015/8/25
Y1 - 2015/8/25
N2 - Sufficiently large semiconductor nanocrystals are a useful model system to characterize bulk-like excitons, with the electron and hole bound predominantly by Coulomb interaction. We present optical characterization of excitons in individual giant CdTe nanocrystals with diameters up to 25.5 nm at 4.2 K under varying excitation power and magnetic field strength. We determine values for the biexciton binding energy, diamagnetic shift constant, and Landé g-factor, which approach the bulk values with increasing nanocrystal size. (Figure Presented).
AB - Sufficiently large semiconductor nanocrystals are a useful model system to characterize bulk-like excitons, with the electron and hole bound predominantly by Coulomb interaction. We present optical characterization of excitons in individual giant CdTe nanocrystals with diameters up to 25.5 nm at 4.2 K under varying excitation power and magnetic field strength. We determine values for the biexciton binding energy, diamagnetic shift constant, and Landé g-factor, which approach the bulk values with increasing nanocrystal size. (Figure Presented).
KW - exciton localization
KW - multiexcitons
KW - semiconductor quantum dots
KW - weak quantum confinement
UR - http://www.scopus.com/inward/record.url?scp=84940121655&partnerID=8YFLogxK
U2 - 10.1021/acsnano.5b02597
DO - 10.1021/acsnano.5b02597
M3 - Article
AN - SCOPUS:84940121655
SN - 1936-0851
VL - 9
SP - 7840
EP - 7845
JO - ACS Nano
JF - ACS Nano
IS - 8
ER -