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Photon-induced reversible phase transition in CsPbBr3 perovskite

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Abstract

We firstly report using above-bandgap illumination with small energy threshold (1.6 mWcm-2) triggering phase transition from orthorhombic to tetragonal in CsPbBr3. This photon-induced structure reorganization is reversible and presents a fast and controllable response (<0.5 s) to light on/off.

© 2019 The Author(s)

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