Baker, W. J. and Ambal, K. and Waters, D. P. and Baarda, R. and Morishita, H. and van Schooten, K. and McCamey, D. R. and Lupton, J. M. and Boehme, C. (2012) Robust absolute magnetometry with organic thin-film devices. Nature Communications 3, p. 898.
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Magnetic field sensors based on organic thin-film materials have attracted considerable interest in recent years as they can be manufactured at very low cost and on flexible substrates. However, the technological relevance of such magnetoresistive sensors is limited owing to their narrow magnetic field ranges (~30 mT) and the continuous calibration required to compensate temperature fluctuations and material degradation. Conversely, magnetic resonance (MR)-based sensors, which utilize fundamental physical relationships for extremely precise measurements of fields, are usually large and expensive. Here we demonstrate an organic magnetic resonance-based magnetometer, employing spin-dependent electronic transitions in an organic diode, which combines the low-cost thin-film fabrication and integration properties of organic electronics with the precision of a MR-based sensor. We show that the device never requires calibration, operates over large temperature and magnetic field ranges, is robust against materials degradation and allows for absolute sensitivities of <50 nT Hz^(−1/2).
|Date:||12 June 2012|
|Institutions:||Physics > Institute of Experimental and Applied Physics > Chair Professor Lupton > Group John Lupton|
|Research groups and research centres:||Not selected|
|Keywords:||PI-CONJUGATED POLYMERS; LIGHT-EMITTING-DIODES; POLARON PAIRS; SPIN; SEMICONDUCTORS; DIAMOND|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Partially|
|Deposited On:||15 Nov 2012 08:17|
|Last Modified:||15 Nov 2012 08:17|