Proceedings of International Conference on Perovskite Thin Film Photovoltaics and Perovskite Photonics and Optoelectronics (NIPHO20)
Publication date: 25th November 2019
Although highly efficient perovskite solar cells can be fabricated using dry, vacuum-based co-evaporation the film formation mechanisms of this fabrication route are still largely underexplored, as most research groups focus on cheap and fast, but industrially unattractive wet-chemical processes. At MLU, we develop dynamic co-evaporation processes for mixed halide perovskites and try to find new material combination with better performance and higher stability. In this contribution, we investigate the film formation during the growth of hybrid lead halide perovskites by co-evaporation with the aid of in situ XRD diagnostics. The detailed analysis of phase evolution, nucleation/reaction/diffusion kinetics and degradation modes allows to pinpoint structure-property relationships between the involved crystalline phases and the device photophysics. We are able to resolve secondary phases such as PbI2 already during growth and our time-resolved measurements allows us to report on the kinetics of film formation and thermal degradation. Ultimately, we report on our progress in fabricating efficient devices in a regular n-i-p structure using a ITO/SnO2/Perovskite/PTAA/Au device configuration.
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The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.