fig6

From: Efficiency enhancement of thermal-evaporated perovskite light-emitting diodes through process optimization and additive engineering

Efficiency enhancement of thermal-evaporated perovskite light-emitting diodes through process optimization and additive engineering

Figure 6. Data related to performance improvement by organic additives. (A) PL spectra changes upon incorporation of PEACl into CsPbBr₃; (B) PL spectra of CsPbBr₃ treated with PEACl only and with both PEACl and GABr; (C) EQE vs. current density of pristine CsPbBr₃, PEACl-treated, and GABr-treated films^[107]. Copyright 2025 Springer; (D) schematic illustration of perovskite modification in CsPbBrI₂ upon addition of 2-F-TPPO; (E) optical image of a large-area perovskite film deposited by vacuum evaporation, and (F) PL peak position of large-area CsPbBrI₂:2-F-TPPO films^[108]. Copyright 2025 Springer. PL: Photoluminescence; PEACl: phenethylammonium chloride; GABr: guanidinium bromide; EQE: external quantum efficiency; TPPO: triphenylphosphine oxide.