Regensburg 2016 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 90: Poster III

HL 90.14: Poster

Thursday, March 10, 2016, 16:00–19:00, Poster A

Radiative loss mechanisms in hybrid trihalide perovskite films — •Robert Hanfland, Fabian Meier, Christoph Baumbach, and Carsten Deibel — Institut für Physik, Technische Universität Chemnitz, 09126 Chemnitz, Germany

During the last few years, hybrid trihalide perovskite based solar cells showed an impressive ascent of efficiency and recently reached values beyond 18 %. Recombination mechanisms as the main loss mechanism control the dynamics of photoluminescence (PL) and play an important role for further improvement of efficiency.

We investigated the recombination mechanisms in hybrid trihalide perovskite films by using a confocal setup for PL measurement. The measured transients were analysed using models with different recombination mechanisms such as direct or trap assisted recombination. Other processes like multiple trapping are included as well. We discuss the dominant recombination mechanisms in view of its implications on the device performance.