Berlin 2015 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 61: Posters III (Organic-inorganic perovskite semiconductors; Organic photovoltaics and electronics; Photovoltaics; Energy science; New materials and concepts)
HL 61.4: Poster
Mittwoch, 18. März 2015, 15:00–20:00, Poster F
Evaluation of different layer sequences of perovskite solar cells — •Andrea Jansen, David Grabowski, Dorothea Scheunemann, Maria S. Hammer, Ingo Riedel, Jürgen Parisi, and Holger Borchert — University of Oldenburg, Department of Physics, Energy and Semiconductor Research Laboratory, 26129 Oldenburg, Germany
Since few years, perovskite solar cells have attracted a massive increase in research effort, which is due to their potentially very high efficiencies at low costs. In solar cells the perovskite layer functions as a light absorber and exhibits the ability to transport both electrons and holes. In this work, the deposition of the perovskite CH3NH3PbI3 was implemented via a two-step coating method, in which a solution containing PbI2 and another one containing CH3NH3I are deposited consecutively. Concerning photovoltaic performance, this method has shown to be advantageous compared to the one-step coating method, in which a solution containing both CH3NH3I and PbI2 is deposited on the substrate. The perovskite layers were analyzed by scanning electron microscopy (SEM) and X-ray diffraction (XRD), in order to determine the film morphology and crystal structure, respectively. Different device concepts for implementing the solution-cast perovskite layers into solar cells will be presented and discussed.