Circularly Polarized Emission from Colloidal Nanocrystal Quantum Dots Confined in Sculptured Thin Film Based Microcavities
PENNSYLVANIA STATE UNIV STATE COLLEGE DEPT OF ENGINEERING SCIENCE AND MECHANICS
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We report the simultaneous control of the polarization state and emission bandwidth of colloidal nanocrystal quantum dots by embedding them in chiral reflector-based microcavities. Significant improvements in directionality and color purity have been observed in the polarized light output arising from the enhanced coupling between the NQD-excitons and the confined electromagnetic field.