Dresden 2011 – scientific programme
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DS: Fachverband Dünne Schichten
DS 20: Application of Thin Films
DS 20.6: Talk
Tuesday, March 15, 2011, 11:30–11:45, GER 38
Characterization of ITO films on fluorescent borate glasses — •Franziska Steudel1, Nico Teuscher2, Susanne Richter1, Andreas Heilmann2, Christan Hagendorf1, Paul-Tiberiu Miclea1,3, and Stefan Schweizer1,4 — 1Fraunhofer Center for Silicon Photovoltaics, Walter-Hülse-Str. 1, 06120 Halle (Saale) — 2Fraunhofer Institute for Mechanics of Materials, Walter-Hülse-Str. 1, 06120 Halle (Saale) — 3Institute of Physics, Martin Luther University of Halle-Wittenberg, Heinrich-Damerow-Str. 4, 06120 Halle (Saale) — 4Centre for Innovation Competence SiLi-nano®, Martin Luther University of Halle-Wittenberg, Karl-Freiherr-von-Fritsch-Str. 3, 06120 Halle (Saale)
For photovoltaic applications, the cover glass is one of the key products in solar modules. For high efficiency modules, it would be advantageous to use the glass not only as a cover but also as a down-converter. Samarium-doped borate glasses, for instance, convert the incident violet and blue part of the solar spectrum to visible red light which is more efficiently absorbed by the solar cell. The chemical composition of borate glasses consists of boron oxide as a network former and metal oxides as network modifiers. In this work, borate glasses with different network modifiers were prepared and used as substrates for the deposition of a conductive indium tin oxide (ITO) film. The deposition is done by magnetron sputtering at room temperature. To understand the electrical and optical properties of the deposited ITO films the diffusion of the glass components into the films is studied by time of flight secondary ion mass spectrometry (ToF-SIMS).