Modelling of charge carrier transport in conjugated polymers doped by polar additives

• Autorzy: Toman P. , Nešpůrek S. , Bartkowiak W.
• Języki publikacji: EN

Abstrakty

EN

A theoretical model of the inter-chain charge carrier transport in poly[2-methoxy-5-(2´-ethylhexyloxy)- p-phenylene vinylene] doped with a photochromic polar additive is put forward. The model attributes to each polymer chain a set of charge states, in which charge carriers thermalize. These on-chain states are calculated by solving the Schrodinger equation with a tight binding Hamiltonian. The interchain transfer rates are determined using the Marcus formula. The model describes the effect of polar additives on charge carrier transport. The presence of the additives results in a decrease of charge mobility, because of the increase of the local energy disorder. A decrease of the inter-chain mobility by up to several orders of magnitude is found if the width of the local energy disorder is doubled. This finding confirms the possibility of constructing an optoelectrical switch based on a polymer doped with a photochromic polar additive.

Słowa kluczowe

EN

conjugated polymers; charge carrier transport; molecular electronics; Monte Carlo modelling

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2009
• Tom: Vol. 27, No. 3
• Strony: 797--812
• Opis fizyczny: Bibliogr. 17 poz.

Twórcy

autor

Toman P.

autor

Nešpůrek S.

autor

Bartkowiak W.

• Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovský Sq. 2, 162 06 Prague 6, Czech Republic

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