6533b81ffe1ef96bd12771e5

RESEARCH PRODUCT

Determination of charge carrier mobility of hole transporting polytriarylamine-based diodes

Henk J. BolinkGermà Garcia-belmonteSven HüttnerMichael SommerEva Maria BareaMukundan Thelakkat

subject

Organic electronicsMobilityElectron mobilitybusiness.industryOrganic electronicsMetals and AlloysSurfaces and InterfacesPoly(triarylamines)TriphenylamineSpace chargeHole-transporting materialsSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsOrganic semiconductorchemistry.chemical_compoundchemistryTheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITYMaterials ChemistrySide chainOptoelectronicsField-effect transistorbusinessDiode

description

Hole transport properties of three different side chain poly(triarylamines) have been determined by means of the analysis of steady-state current-voltage characteristics using co-planar diode structures. The interpretation is based on space-charge limited models with field-dependent mobility. Mobilities between ~ 10- 8 and 10- 6 cm2 V- 1 s- 1 are obtained. The highest mobility is achieved for poly(tetraphenylbenzidine) devices and the lowest for poly(triphenylamine) devices. Electron-rich methoxy substituents increase the mobility of poly(triphenylamine)s. A comparison of the mobility values with those obtained using organic field-effect transistors is also given. © 2009 Elsevier B.V. All rights reserved.

yearjournalcountryeditionlanguage
2010-04-01
10.1016/j.tsf.2009.10.003