Quasi-bound state theory of field-dependent photogeneration from polymer-embedded nanoparticles

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    Abstract

    A quantum mechanical model of field-dependent photogeneration from polymer-embedded nanoparticles is presented. In this formalism, the rate of escape of a photocreated charge from the nanoparticle into the surrounding polymer matrix is found by calculating the lifetime of its quasi-bound state (QBS) wavefunction. The theory is used to model some typical nanoparticles: CdSe and CdS quantum dots and a CdSe-CdS core/shell nanostructure. It is found that the QBS lifetime undergoes a rapid collapse at critical values of applied field, resulting in a sudden increase in photogeneration efficiency. © 2004 IEEE.
    Original languageEnglish
    JournalIEEE Journal of Quantum Electronics
    Volume40
    Issue number8
    DOIs
    Publication statusPublished - Aug 2004

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