Facile tailoring of the electrical transport in representative hole transport materials by molecular doping.

ABSTRACT: N,N'-Diphenyl-N,N'-bis(1-naphthyl)-1,1'-biphenyl-4,4'-diamine (NPB) and 4,4',4''-tris (N-3-methylphenyl-N-phenylamine) triphenylamine (m-MTDATA) are widely used as hole transport materials in organic optoelectronic devices. In the present article, the hole transport properties of blends of NPB and m-MTDATA compared with the pristine materials are investigated using admittance spectroscopy and considering temperature dependent current-voltage characteristics and electroluminescent characteristics. It has been found that m-MTDATA dramatically lowers the carrier mobility in the NPB matrix to a large extent by enhancing the total density of traps and results in more dispersive transport. However, by introducing NPB into m-MT

SUBMITTER: Li B 

PROVIDER: S-EPMC9082722 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature