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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 49: Poster Session II

CPP 49.24: Poster

Dienstag, 17. März 2020, 14:00–16:00, P1A

The effect of surfactant doping on the crystallization kinetics and stability of perovskite solar cells — •Yuqin Zou and Peter Müller-Buschbaum — TU München, Physik-Department, Lehrstuhl für Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching, Germany

Perovskite solar cells (PSCs) have gained high attention within the last years. They have achieved a remarkable development due to their excellent optical properties and the power conversion efficiency of PSCs has meanwhile crossed the 25% border. However, the efficiency, hysteresis and stability of PSCs are still the main obstacles to their commercial application. The existing challenges are largely attributed to the presence of defect states. Tailoring functional ligands to passivate the defects in perovskite films and interfacial traps is an effective way to improve the performance of PSCs. In the present study, a small amount of surfactants (SDBS) is introduced to modify the perovskite interface, so that a high efficiency and stability of the PSCs can be obtained by crystallization control and defect passivation. The crystal structure, phase and orientation are studied with grazing incidence wide angle X-ray scattering (GIWAXS).