LiF in Inverted Perovskite Solar Cells: Dipole or Doping?
Seung‐Gu Choi, Sung‐Kwang Jung, Joo-Hong Lee, Joo-Hong Lee, Jae-Hwan Kim, Wenting Zheng, Jin‐Wook Lee, Jin‐Wook Lee
Abstract
The functions and mechanisms of thermally evaporated lithium fluoride, widely acknowledged for its role in passivating the perovskite surface as a dipole interlayer, remain not fully elucidated. This work reveals the beneficial effects of LiF originating from interstitial incorporation of lithium cations in the underlying perovskite layer.
Topics & Concepts
Perovskite (structure)DopingMaterials scienceDipoleEngineering physicsOptoelectronicsChemistryCrystallographyPhysicsOrganic chemistryPerovskite Materials and ApplicationsConducting polymers and applicationsOrganic Electronics and Photovoltaics