Picosecond energy transfer in quantum dot Langmuir-Blodgett nanoassemblies
Article Abstract:
The spectrally resolved dynamics of Forster energy transfer (ET) in single monolayers and bilayers of semiconductor nanocrystal quantum dots assembled (CdSe NQDs) fabricated using Langmuir-Blodgett (LB) techniques are studied. By analyzing spectrally resolved photoluminescence (PL) dynamics, it was found that ET is dominated by interactions of a center, donor NQD with NQD acceptors from the first three shells; as a result, the ET-related PL dynamics can be fit by a sum of three exponential decay terms in which each term is associated with a specific shell
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
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Light amplification using inverted core/shell nanocrystals: towards lasing in the single-exciton regime
Article Abstract:
A novel approach to achieve NC lasing in the Auger-recombination-free regime by using type II NC heterostructures that promote spatial separation on electrons and holes is explored. It is presented that such hetero-NCs can exhibit strong repulsive excition-excition interactions that lead significantly reduced excited-state absorption associated with NCs containing single electron-hole pairs.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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Inter-specific vibrational spectroscopy of molecules with visible lights
Article Abstract:
A more general solution, a time-domain spectroscopy based on fourth-order Raman scattering in which vibrational coherences are pumped by a Raman process is proposed. Fourier transformation of the oscillation provides a vibrational spectrum of 0-1000 cm(super -1) for the dye located at the ir-solution interface.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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