Investigation of transport properties in polymer/fullerene blends using time-of-flight photocurrent measurements

S. A. Choulis, J. Nelson, Y. Kim, D. Poplavskyy, T. Kreouzis, J. R. Durrant, D. D.C. Bradley

Research output: Contribution to journalArticlepeer-review

147 Scopus citations

Abstract

The electron and hole transport in (MDMO-PPV)-(PCBM) blends was studied by ToF measurements at RT as a function of PCBM concentration laser excitation density and applied bias. Hole mobility increased when the laser intensity was increased above a threshold value of ∼1 μJ cm-2 per pulse, consistent with the notion of trap filling in the polymer at polaron densities of ∼1017 cm-3.
Original languageEnglish (US)
JournalApplied Physics Letters
Volume83
Issue number18
DOIs
StatePublished - Nov 3 2003
Externally publishedYes

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