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Strong piezoresistance effect of small molecule organic semiconductors
In this paper, we report on the strong piezoresistance effect on small molecule organic semiconductors. We fabricated and measured the indium-tin-oxide (ITO)/tris- (8-hydroxyquinoline) aluminium (Alq, 80 nm) (or bathocuproine (BCP, 70 nm))/Al devices. In the simple devices, we measured the current u...
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Published in: | Journal of physics. D, Applied physics Applied physics, 2008-10, Vol.41 (20), p.205106-205106 (6) |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | In this paper, we report on the strong piezoresistance effect on small molecule organic semiconductors. We fabricated and measured the indium-tin-oxide (ITO)/tris- (8-hydroxyquinoline) aluminium (Alq, 80 nm) (or bathocuproine (BCP, 70 nm))/Al devices. In the simple devices, we measured the current under constant bias and square wave pulses with a load-produced varying pressure applied on the devices. The current shows a high sensitivity to the pressure. The related mechanism is also discussed. Our results clearly demonstrate that some of the small molecule organic semiconductors show potential as sensitive materials to be used in a tactile sensor. The sensor could be used in an artificial 'electronic skin' for future robots used in daily life for housekeeping or entertainment purposes. |
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ISSN: | 0022-3727 1361-6463 |
DOI: | 10.1088/0022-3727/41/20/205106 |