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Light Emitting Devices with Molecularly Doped Polymer Layers. A New Diamine as a Hole Transporting Molecule

Published online by Cambridge University Press:  10 February 2011

V. Fattori,
M. Cocchi,
P. Di Marco,
G. Giro,
J. Kalinowski,
P. Dembech,
G. Fabbri and
G. Seconi
V. Fattori
Affiliation:
CNR-FRAE, Area della Ricerca, via P. Gobetti 101, 40129 Bologna, Italy
M. Cocchi
Affiliation:
CNR-FRAE, Area della Ricerca, via P. Gobetti 101, 40129 Bologna, Italy
P. Di Marco
Affiliation:
CNR-FRAE, Area della Ricerca, via P. Gobetti 101, 40129 Bologna, Italy
G. Giro
Affiliation:
CNR-FRAE, Area della Ricerca, via P. Gobetti 101, 40129 Bologna, Italy
J. Kalinowski
Affiliation:
CNR-FRAE, Area della Ricerca, via P. Gobetti 101, 40129 Bologna, ItalyDepartment of Molecular Physics, Technical University of Gdansk, ul. G. Narutowicza 11/12, 80-952 Gdansk, Poland
P. Dembech
Affiliation:
CNR-ICoCEA, Area della Ricerca, via Gobetti 101, 40129 Bologna, Italy
G. Fabbri
Affiliation:
CNR-ICoCEA, Area della Ricerca, via Gobetti 101, 40129 Bologna, Italy
G. Seconi
Affiliation:
CNR-ICoCEA, Area della Ricerca, via Gobetti 101, 40129 Bologna, Italy
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Abstract

In the present contribution a new hole transporting molecule belonging to the triphenyldiamine family (N,N'-diphenyl-N,N'-bis(4-metylphenyl)- 1, 1'-biphenyl-4,4'- diamine) in a polycarbonate matrix is studied as the hole transport layer in a two layer device with Alq3 as emitting layer. The dependence of the electrical and emitting behaviour on the doping level is studied and compared with the vacuum deposited diamine layer also interfaced with Alq3

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