High electron mobility in nickel bis(dithiolene) complexes
- 18 April 2007
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 17 (25) , 2642-2647
- https://doi.org/10.1039/b701036b
Abstract
The charge-carrier mobilities for three Ni bis(dithiolene) complexes have been determined using the steady-state space-charge limited current technique. A high mobility of 2.8 cm2 V–1 s–1 was observed for one compound, which exhibits a π-stacked columnar structure, in an annealed unsymmetrical melt-processed device. Energy-level considerations and field-effect transistor measurements suggest that this value represents an electron mobility. However, saturation mobilities measured for this compound in spin-coated field-effect transistors were found to be over two orders of magnitude lower than the space-charge limited current values. X-Ray diffraction shows a difference in morphology between thick melt-processed and thin spin-coated films and, therefore, a significant change in intermolecular packing between the device types may explain the discrepancy in mobilities obtained using the two techniques.Keywords
This publication has 30 references indexed in Scilit:
- Recent Advances in Semiconductor Performance and Printing Processes for Organic Transistor-Based ElectronicsChemistry of Materials, 2004
- Charge Transport Properties in Discotic Liquid Crystals: A Quantum-Chemical Insight into Structure−Property RelationshipsJournal of the American Chemical Society, 2004
- 2,7‐Bis(diarylamino)‐9,9‐dimethylfluorenes as Hole‐Transport Materials for Organic Light‐Emitting DiodesAdvanced Functional Materials, 2003
- High Charge Carrier Mobility in Conjugated Organometallic Polymer NetworksJournal of the American Chemical Society, 2002
- The Role of Ruthenium and Rhenium Diimine Complexes in Conjugated Polymers That Exhibit Interesting Opto-Electronic PropertiesChemistry – A European Journal, 2001
- Synthesis and electronic properties of conjugated polymers based on rhenium or ruthenium dipyridophenazine complexesJournal of Materials Chemistry, 1999
- Redox interconversions and aqueous solution properties of the cuboidal complexes [Mo4S4(edta)2]m- (m = 4, 3, 2)Inorganic Chemistry, 1990
- Orbital-overlap factor in electron transfer: sensitivity of homogeneous self-exchange kinetics for some metallocenes to electronic structureJournal of the American Chemical Society, 1988
- Electron exchange between tris(hexafluoroacetylacetonato)ruthenium(II) and (III) and between related compounds. Effects of solvent on the ratesThe Journal of Physical Chemistry, 1982
- Correlations between outer-sphere self-exchange rates and reaction entropies for some simple redox couplesInorganic Chemistry, 1980