Dresden 2020 – scientific programme
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DS: Fachverband Dünne Schichten
DS 28: Poster: Thin Film Properties: Structure, Morphology and Composition
DS 28.15: Poster
Wednesday, March 18, 2020, 15:00–18:00, P1A
Investigation and Deposition of Methylammonium Lead Iodide Thin Films for Perovskite Solar Cell — •Young Un Jin1, Niels Benson2, and Doru C. Lupascu1 — 1Institut für Materialwissenschaft, Universität Duisburg-Essen und Center for Nanointegration Duisburg-Essen (CENIDE) — 2Institut für Nanostrukturtechnik, Universität Duisburg-Essen und Center for Nanointegration Duisburg-Essen (CENIDE)
The organic-inorganic lead halide perovskites have been getting the limelight due to their excellent performance in photovoltaic devices which contain charge transport and hole transfer materials. Recently, methylammonium lead iodide (CH3NH3PbI3, MAPI) light harvester has contributed to be recorded in the highest power conversion efficiency, over 23% of perovskite solar cell by NREL. A thin film of MAPI is demonstrated that it has broad light absorption, high carrier mobility and leads to be therefore appropriate to engineering of direct bandgap structure of interlayers in a photovoltaic device expected.
In this study, we focus on a progressive method to deposit a clean MAPI thin film for the surface quality and its material properties to figure out the key how these properties affect charge transport and the relationship with its defect density. On the overall proeprties to understand the fundamental physical properties and their influence we characterize the morphology of the surface and local defect densities in MAPI and investigate how morphological problems are associated with charge mobility and what defects can impact on the electrical and optical features.