Mobility and density relaxation of photogenerated charge carriers in organic materials

R. Österbacka*, A. Pivrikas, G. Juška, K. Genevičius, K. Arlauskas, H. Stubb

*Korresponderande författare för detta arbete

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

76 Citeringar (Scopus)

Sammanfattning

We have measured mobility and density relaxation of photogenerated charge carriers in regiorandom poly(3-hexylthiophene) using novel extraction current transient techniques. We show how to obtain time-dependent mobility μ and charge carrier density p using independent measurements. The results show μ∝t -0.42 independent on charge carrier density. The carrier density follows a bimolecular decay with the bimolecular recombination coefficient β=7.2×10-13 cm3/s. The measured time-of-flight current follows closely the estimated time decay as j(t)∝p(t)μ(t), with deviation arising from extraction of the generated charge carriers.

OriginalspråkEngelska
Sidor (från-till)534-538
Antal sidor5
TidskriftCurrent Applied Physics
Volym4
Utgåva5
DOI
StatusPublicerad - aug 2004
MoE-publikationstypA1 Tidskriftsartikel-refererad

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