@misc{AggourStoerkelMurrelletal., author = {Aggour, Mohammed and Stoerkel, Ulrich and Murrell, Chris and Campbell, S. A. and Jungblut, H. and Hoffmann, Patrick and Mikalo, Ricardo Pablo and Schmeißer, Dieter and Lewerenz, Hans-Joachim}, title = {Electrochemical interface modification of CuInS2 thin films}, abstract = {We studied two novel electrochemical treatments of CuInS2 solar-cell absorber films, introduced to remove the deleterious segregated CuS phase. Their influence onsurface topography, chemistry and electronic properties was investigated using in situ atomic force microscopy (AFM) and photoclectron spectroscopy, performed inpart at the U49/2 undulator beam line at BESSY II. The results are examined in order to develop an improved understanding of the chemical-electrochemical surfacetransformation processes.}, language = {en} } @misc{MuellerHenkelMikaloetal., author = {M{\"u}ller, Klaus and Henkel, Karsten and Mikalo, Ricardo Pablo and Paloumpa, Ioanna and Schmeißer, Dieter}, title = {Elektronik mit organischen Materialien}, publisher = {BTU Cottbus, Eigenverlag}, abstract = {Plastikelektronik, flexible Solarzellen, intelligente Kleidung, neuartige und maßgeschneiderte Transducer f{\"u}r die Gas-, Fl{\"u}ssigkeits- und Biosensorik, all dies sind Anwendungen, die ohne halbleitende Polymere nicht denkbar w{\"a}ren und die Bereiche erschließen, in denen zur Zeit eine regelrechte Goldgr{\"a}berstimmung herrscht. Mit wichtigen Beitr{\"a}gen im Grundlagen- und Anwendungsbereich nimmt die BTU Cottbus an dieser Entwicklung teil, u. a. auch durch eine Kooperation mit dem Institut f{\"u}r Mikrobiologie des Carl-Thiem-Klinikums Cottbus.In diesem Artikel werden die Voraussetzungen f{\"u}r die Konstruktion organischer Feldeffekt-Transistoren mit gassensitiver Gate-Elektrode vorgestellt. Untersuchungen zur elektronischen Struktur des organischen Halbleiters Poly(3-Hexylthiophen), die Anwendung dieses Materials als aktive Schicht in organischen Feldeffekt-Transitoren, die Gassensitivit{\"a}t von Polypyrrolelektroden auf Quarz-Mikrowaagen und die Mikrorstukturierung organischer Elektroden werden beschrieben.}, language = {de} } @misc{LopezHellerBitzeretal., author = {Lopez, Alberto and Heller, Thomas and Bitzer, Thomas and Richardson, Neville V.}, title = {A vibrational study of the adsorption of glycine on clean and Na modified Si (100)-2x1 surfaces}, series = {Chemical physics}, volume = {277}, journal = {Chemical physics}, number = {1}, issn = {0301-0104}, pages = {1 -- 8}, abstract = {The chemisorption of glycine and its fully deuterated analogue, d(5)-glycine, deposited on the clean and Na modified Si(100)-2 x 1 surfaces, has been studied byhigh-resolution electron energy loss spectroscopy (HREELS) and ab initio methods. HREELS indicates that chemisorption of glycine and d(5)-glycine on Na/Si(100)-2 x1 occurs through cleavage of the OH and OD bonds in the carboxylic groups. The adsorbed species are bonded through the formation of an ionic bond between thedeprotonated carboxylate group and the adsorbed Na atom, leading to species in a bidentate coordination. In contrast, we observe monodentate glycinate andd(5)-glycinate species following the exposure of Si(100)-2 x 1 to glycine and deuterated glycine. The thermal stability of glycine on clean Si(100)-2 x 1 and on the Namodified surface has been studied by heating the substrate to various temperatures.}, language = {en} }