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Photoluminescence Dynamics of MAPI Perovskite Films Induced by Lateral Electric Field by Simonas Driukas; Danielis Rutkauskas; Marius Franckevičius; Jevgenij Chmeliov; Vidmantas Gulbinas is a Materials Science article available to read on EtoBox.

What is Photoluminescence Dynamics of MAPI Perovskite Films Induced by Lateral Electric Field about?

The time‐dependent behavior of perovskite devices is one of the limiting factors for wide application of these materials in sandwich‐type or lateral optoelectronic device architectures. Despite abundant research on the topic, the exact mechanisms underlying the dynamics of device performance remain elusive. Herein, photoluminescence (PL) and electric field‐induced second harmonic microscopy techniques are combined to image and identify voltage‐induced lateral dynamic processes in methylammonium lead iodide perovskite thin films. A sequence of voltage‐induced dynamic steps is observed: i) Appearance of a short‐lived bright PL next to the positive electrode; ii) formation of a moving dark PL front; iii) emergence and blinking of bright PL spots; iv) growth and subsequent decay of the bright PL spots after voltage turn off. This behavior is explained by proposing a model of varying spatial distribution of inter‐electrode electric field and the presence of two types of PL quenching defects.

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Author

Simonas Driukas; Danielis Rutkauskas; Marius Franckevičius; Jevgenij Chmeliov; Vidmantas Gulbinas

Publisher

Wiley

Published

2022

Language

EN

Field

Materials Science (Physical Sciences)