We study charge generation and recombination in organic and hybrid solar cell materials by combining spectroscopy, time-resolved device measurements, and thin film structural probes. We describe how recombination via low-lying triplet excited states at organic/organic interfaces can be controlled by a balance between energy landscape and hierarchical film structure. Our recent work also focusses on using spectroscopic tools with temporal and structural sensitivity to better understand the dynamics of charge generation in emerging solar cell materials, such as hybrid organo metal halide perovskites. Our results bring new insight into the molecular properties that determine charge carrier dynamics and suggest new strategies for materials design focused on kinetically suppressing recombination losses.

Charge dynamics in next-generation energy conversion materials

249th National Meeting (2015)

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