Energy spectrum and optical properties of polymer–nanocrystal composites | Zendy

Shik A. | Zendy; Bakueva L. | Zendy; Ruda H. E. | Zendy

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Energy spectrum and optical properties of polymer–nanocrystal composites

Author(s) -

Shik A.,

Bakueva L.,

Ruda H. E.

Publication year - 2005

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.200460715

Subject(s) - delocalized electron , nanocrystal , heterojunction , materials science , quantum dot , polymer , nanocomposite , photoconductivity , semiconductor , absorption spectroscopy , composite number , absorption (acoustics) , electron , spectral line , composite material , optoelectronics , nanotechnology , chemistry , optics , physics , quantum mechanics , organic chemistry

Composite systems containing semiconductor nanocrystals (NCs) embedded into a conducting polymer matrix have a number of key distinctions from semiconductor quantum dot heterostructures. Low electron affinity of conducting polymers results in a type‐II heterojunction at the NC‐polymer interface with electrons localized inside NC and delocalized holes with a continuous density of states. Optical properties of nanocomposites were considered accounting for the above‐mentioned features of energy spectrum. The results explain a series of experimentally observed peculiarities including various and sometimes featureless absorption spectra, large Stokes shift and activationless photoconductivity. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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