Large tunable photoeffect on ion conduction in halide perovskites and 
implications for photodecomposition

Kim, G. Y.; Senocrate, A.; Yang, T. Y.; Gregori, G.; Grätzel, M.; Maier, J.

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Large tunable photoeffect on ion conduction in halide perovskites and implications for photodecomposition

MPS-Authors

/persons/resource/persons279990

Gregori, G.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

/persons/resource/persons217129

Maier, J.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Kim, G. Y., Senocrate, A., Yang, T. Y., Gregori, G., Grätzel, M., & Maier, J. (2018). Large tunable photoeffect on ion conduction in halide perovskites and implications for photodecomposition. Nature Materials, 17(5), 445-449.

Cite as: https://hdl.handle.net/21.11116/0000-000E-D4EC-9

Abstract

In the same way as electron transport is crucial for information technology, ion transport is a key phenomenon in the context of energy research. To be able to tune ion conduction by light would open up opportunities for a wide realm of new applications, but it has been challenging to provide clear evidence for such an effect. Here we show through various techniques, such as transference-number measurements, permeation studies, stoichiometric variations, Hall effect experiments and the use of blocking electrodes, that light excitation enhances by several orders of magnitude the ionic conductivity of methylammonium lead iodide, the archetypal metal halide photovoltaic material. We provide a rationale for this unexpected phenomenon and show that it straightforwardly leads to a hitherto unconsidered photodecomposition path of the perovskite.