Detail publikace

A Molecular Photosensor Based on Photoswitching of Charge Carrier Mobility

WEITER, M. VALA, M. ZMEŠKAL, O. NEŠPŮREK, S. TOMAN, P.

Originální název

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

Polymer photoelectronic device based on interaction between ?-conjugated polymer matrices and photochromic molecules was fabricated. The theoretical and experimental studies proved that the photochromic reaction in studied devices should eventuate in changes of optical and electrical properties of polymers such as luminescence and conductivity. The quantum chemical calculations showed that the presence of dipolar species in the vicinity of a polymer chain modifies the on-chain site energies and consequently increases the width of the distribution of hopping transport states. Optical switching was studied using standard absorption and photoluminescence spectroscopy. A strong photoluminescence quenching after the photochromic conversion caused by radiative energy transfer was observed. The influence of photoswitchable charge carrier traps on charge transport were evaluated by Space Charge Limited Current (SCLC) method. It was shown that deep traps may significantly affect the energy of the transport level, and thus modulate the transport of charge carriers.

Klíčová slova

charge transport, conjugated polymers, quantum chemistry

Autoři

WEITER, M.; VALA, M.; ZMEŠKAL, O.; NEŠPŮREK, S.; TOMAN, P.

Rok RIV

2007

Vydáno

1. 3. 2007

ISSN

1022-1360

Periodikum

MACROMOLECULAR SYMPOSIA

Ročník

2007

Číslo

247

Stát

Spolková republika Německo

Strany od

318

Strany do

325

Strany počet

BibTex

@article{BUT45322,
  author="Martin {Weiter} and Martin {Vala} and Oldřich {Zmeškal} and Stanislav {Nešpůrek} and Petr {Toman}",
  title="A Molecular Photosensor Based on Photoswitching of Charge Carrier Mobility",
  journal="MACROMOLECULAR SYMPOSIA",
  year="2007",
  volume="2007",
  number="247",
  pages="318--325",
  issn="1022-1360"
}