Field-Effect Mobility, Morphology and Electroluminescence of a Semiconductor Based on a DPPQuaterfluorene Quadrupolar Linear Conjugated System

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). T...

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Bibliographic Details
Published in:Israel journal of chemistry 2014-06, Vol.54 (5-6), p.828
Main Authors: Arumugam, Sasikumar, Brown, Roisin E, Orofino-Pena, Clara, Findlay, Neil J, Inigo, Anto Regis, Kanibolotsky, Alexander L, Skabara, Peter J
Format: Article
Language:English
Subjects:
Semiconductors
Sensors
Online Access:Get full text
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Summary: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. [PUBLICATION ABSTRACT]
ISSN:0021-2148
1869-5868
DOI:10.1002/ijch.201400059