Enhancing Luminescence Efficiency by Controlled Island Formation of CsPbBr3 Perovskite

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

Abstract

CsPbBr3 is an inorganic perovskite material that is promising for light-emitting applications. Such applications are known to benefit from an island-type active layer structure, which enhances the device's light emission efficiency. Here, the impact of the environment on the island formation in thermally deposited bilayers of CsPbBr3/LiBr is investigated. It is demonstrated that the island formation occurs only in humid environments, leading to an enhancement of the photoluminescence quantum yield by a factor of 350. Time-resolved grazing-incidence wide-angle X-ray scattering experiments document the island growth process and reveal that the LiBr has already changed the perovskite crystal orientation prior to the island formation.

Details

OriginalspracheEnglisch
Aufsatznummer2201408
FachzeitschriftAdvanced optical materials
Jahrgang11
Ausgabenummer3
Frühes Online-Datum2 Dez. 2022
PublikationsstatusVeröffentlicht - 3 Feb. 2023
Peer-Review-StatusJa

Schlagworte

Schlagwörter

  • humidity, islands, luminescence, perovskites, vacuum deposition