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Field‐Effect Mobility, Morphology and Electroluminescence of a Semiconductor Based on a DPPQuaterfluorene Quadrupolar Linear Conjugated System
Author(s) -
Arumugam Sasikumar,
Brown Roisin E.,
OrofinoPena Clara,
Findlay Neil J.,
Inigo Anto Regis,
Kanibolotsky Alexander L.,
Skabara Peter J.
Publication year - 2014
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.201400059
Subject(s) - chemistry , semiconductor , electroluminescence , conjugated system , organic field effect transistor , field effect transistor , organic semiconductor , optoelectronics , luminescence , transistor , polymer , voltage , organic chemistry , materials science , physics , layer (electronics) , quantum mechanics
An organic semiconductor, expressed as a quadrupolar linear conjugated system ( DPP Linear‐c ), consisting of a 1,4‐diketopyrrolo[3,4‐c]pyrrole (DPP) central unit and two quaterfluorenylphenyl arms at the 3‐ and 6‐positions of the DPP fragment, is studied in organic field‐effect transistors (OFETs). The strong propensity of DPP Linear‐c to aggregate in the solid state favours the hole mobility of the semiconductor due to the alignment of HOMOs in the aggregates. The fabrication of OFETs from this novel p‐type semiconductor is reported, using different dielectrics to evaluate their effect on the overall device performance. Despite its aggregation, DPP Linear‐c remains luminescent in the solid state. Electroluminescence of a non‐optimised OLED fabricated from this material is demonstrated.