DOTSENSE

Group III-nitride quantum dots as optical transducers for chemical sensors

Coordinatore	JUSTUS-LIEBIG-UNIVERSITAET GIESSEN    more  Organization address address: Ludwigstrasse 23 city: GIESSEN postcode: 35390 contact info Titolo: Dr. Nome: Jamiliah Cognome: MICHEL Email: send email Telefono: 0641-99-12123 Fax: 0641-99-12109
Nazionalità Coordinatore	Germany [DE]
Totale costo	1˙815˙420 €
EC contributo	1˙223˙789 €
Programma	FP7-ICT Specific Programme "Cooperation": Information and communication technologies
Code Call	FP7-ICT-2007-2
Funding Scheme	CP
Anno di inizio	2008
Periodo (anno-mese-giorno)	2008-05-01   -   2011-04-30

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	JUSTUS-LIEBIG-UNIVERSITAET GIESSEN  Organization address address: Ludwigstrasse 23 city: GIESSEN postcode: 35390 contact info Titolo: Dr. Nome: Jamiliah Cognome: MICHEL Email: send email Telefono: 0641-99-12123 Fax: 0641-99-12109	DE (GIESSEN)	coordinator	0.00
2	ARISTOTELIO PANEPISTIMIO THESSALONIKIS  Organization address address: Administration Building, University Campus city: THESSALONIKI postcode: 54124 contact info Titolo: Ms. Nome: Christina Cognome: Best Email: send email Telefono: -999025 Fax: -855563	EL (THESSALONIKI)	participant	0.00
3	COMMISSARIAT A L ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES  Organization address address: RUE LEBLANC city: PARIS 15 postcode: 75015 contact info Titolo: Ms. Nome: Nathalie Cognome: Colombel Email: send email Telefono: +33 438 783 579 Fax: +33 438 785 153	FR (PARIS 15)	participant	0.00
4	EADS DEUTSCHLAND GMBH  Organization address address: Willy-Messerschmitt-Strasse city: OTTOBRUNN postcode: 85521 contact info Titolo: Mr. Nome: Peter Cognome: Lilischkis Email: send email Telefono: -2872 Fax: -3509	DE (OTTOBRUNN)	participant	0.00
5	TECHNISCHE UNIVERSITAET MUENCHEN  Organization address address: Arcisstrasse city: MUENCHEN postcode: 80333 contact info Titolo: Ms. Nome: Ulrike Cognome: Ronchetti Email: send email Telefono: +49-89-289 22616 Fax: +49-89-289 22620	DE (MUENCHEN)	participant	0.00

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 Obiettivo del progetto (Objective)

The objective of DOTSENSE is the application of III-nitride (InxGa1-xN) quantum dots (QDs) and nanodisks (NDs) as opto-chemical transducers for the detection of hydrogen, hydrocarbons and the pH-value in gaseous and liquid environments. The characteristics of intense room-temperature luminescence from III-nitride nanostructures can be altered by chemically induced variations of the surface potential. The transparency of the substrate material and the involved buffer layers allow optical excitation and detection of the changes in QD or ND luminescence from the substrate backside. These transducers are hence capable of operating in harsh environments (high pressure, explosive media), as neither electrical feedthroughs nor a deterministic current are necessary for the sensor signal read-out. Furthermore, spatially-resolved detection of variations in the surface potential is possible, since the spatial extension of excited nanostructures is determined by the diameter of the incident light beam.nIn the first part of the project, the work is focused on the optimization of the structural properties of QD and ND ensembles (size, alloy composition, number of layers, crystallographic orientation) with the aim of attaining a maximum sensitivity of the emission properties (intensity and energetic distribution) upon variations in the surface potential. In a second stage, the opto-chemical transducers will be integrated with commercially available light emitters and detectors, to implement different kinds of sensor systems, which demonstrate and exploit the advantages of this innovative transducer concept. This prototypes find application in the field of aeronautics, with a the potential to increase the safety and/or the economy of flying.