@misc{HenkelOpreaPaloumpaetal., author = {Henkel, Karsten and Oprea, A. and Paloumpa, Ioanna and Appel, G{\"u}nter and Schmeißer, Dieter and Kamieth, P.}, title = {Selective polypyrrole electrodes for quartz microbalances : NO2 and gas flux sensitivities}, series = {Sensors and Actuators : B, Chemical 76(2001)1-3}, volume = {76}, journal = {Sensors and Actuators : B, Chemical 76(2001)1-3}, number = {1-3}, issn = {0925-4005}, pages = {124 -- 129}, language = {en} } @techreport{HenkelPaloumpaOpreaetal., author = {Henkel, Karsten and Paloumpa, Ioanna and Oprea, A. and Appel, G{\"u}nter and Schmeißer, Dieter and Frandsen, W. and Sch{\"o}lzel, Mario}, title = {Entwicklung von Sensoren mit Elektroden aus leitf{\"a}higen Polymeren}, language = {de} } @article{AppelMikaloHenkeletal., author = {Appel, G{\"u}nter and Mikalo, Ricardo Pablo and Henkel, Karsten and Oprea, A. and Yfantis, Alexandros D. and Paloumpa, Ioanna and Schmeißer, Dieter}, title = {Polymeric Electrodes}, language = {en} } @article{OpreaHenkelOehmgenetal., author = {Oprea, A. and Henkel, Karsten and Oehmgen, R. and Appel, G{\"u}nter and Schmeißer, Dieter and Lauer, H. and Hausmann, P.}, title = {Increased sensor sensitivities obtained by polymer coated quartz microbalances}, language = {en} } @inproceedings{OpreaSchmeisserGoldenblum, author = {Oprea, Alexandru and Schmeißer, Dieter and Goldenblum, A.}, title = {On the charge transfer process in ZnS based ac powder electroluminescent devices}, series = {Verhandlungen der Deutschen Physikalischen Gesellschaft}, booktitle = {Verhandlungen der Deutschen Physikalischen Gesellschaft}, publisher = {Deutsche Physikalische Gesellschaft}, address = {Bad Honnef}, abstract = {The charge transfer process in ZnS based ac powder electroluminescent devices was experimentally and theoretically investigated. The time dependence of active currents and the voltage dependence of the brightness were measured in different operating conditions. This data allowed the hypothesis that each ZnS grain of the ac powder electroluminescent device (PWELD) behaves as a thin films electroluminescent device (TFELD) with metal-insulator-semiconductor-insulator-metal (MISIM) structure. The whole PWELD, itself, can be considered as a sum of many litle MISIM sandwiches electrically conected among them and having the quasi Fermi level of the semiconductor-insulator interface randomly distributed. On this basis, in the frame of a statistical Monte-Carlo like procedure, was developed a quantative semiclassical model, in good agreement with the experimental data.}, language = {en} }