TY - JOUR
T1 - Single-Component White Emissive Organic–Inorganic Hybrid Copper Halide Composite Films for Remote UV-pumped White Light-Emitting Diodes with High Color Rendering Index
AU - Liu, Zhe
AU - Liu, Zheng
AU - Xie, Lingling
AU - Lv, Ning
AU - Yang, Henan
AU - Pi, Huihui
AU - Li, Xitao
AU - Li, Siyi
AU - Lin, Zhengguo
AU - Chen, Bingkun
N1 - Publisher Copyright:
© 2024 Wiley-VCH GmbH.
PY - 2024
Y1 - 2024
N2 - Lead-free organic–inorganic metal halides (OIMHs) are highly desirable owing to their remarkable properties including low toxicity, structural diversity, high stability, and solution processability. Nevertheless, the development of their single-component white emissive films remains a formidable challenge for remote white light-emitting diodes (WLEDs) application. In this work, (C16H36N)2Cu2I4/polyvinylidene fluoride (PVDF) white emissive composite film is successfully fabricated through an in situ solvent evaporation crystallization process at room temperature. The elemental analysis and bonding between (C16H36N)2Cu2I4 and PVDF are demonstrated by X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) measurements. In addition, this composite film exhibits a broadband white emission with two peaks. Notably, the best photoluminescence quantum yields (PLQYs) of the PVDF based composite film reaches an impressive 96.7%. A (C16H36N)2Cu2I4/PVDF based remote UV-pumped WLEDs with an impressive color rendering index of 95.5 is realized. Finally, the in situ fabrication method is expanded to fabricate (C16H36N)2Cu2I4/polyacrylonitrile (PAN) composite films, and we further realized their single component remote WLEDs.
AB - Lead-free organic–inorganic metal halides (OIMHs) are highly desirable owing to their remarkable properties including low toxicity, structural diversity, high stability, and solution processability. Nevertheless, the development of their single-component white emissive films remains a formidable challenge for remote white light-emitting diodes (WLEDs) application. In this work, (C16H36N)2Cu2I4/polyvinylidene fluoride (PVDF) white emissive composite film is successfully fabricated through an in situ solvent evaporation crystallization process at room temperature. The elemental analysis and bonding between (C16H36N)2Cu2I4 and PVDF are demonstrated by X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) measurements. In addition, this composite film exhibits a broadband white emission with two peaks. Notably, the best photoluminescence quantum yields (PLQYs) of the PVDF based composite film reaches an impressive 96.7%. A (C16H36N)2Cu2I4/PVDF based remote UV-pumped WLEDs with an impressive color rendering index of 95.5 is realized. Finally, the in situ fabrication method is expanded to fabricate (C16H36N)2Cu2I4/polyacrylonitrile (PAN) composite films, and we further realized their single component remote WLEDs.
KW - composite films
KW - hybrid copper halides
KW - lead-free
KW - remote UV-pumped WLEDs
KW - white emission
UR - http://www.scopus.com/inward/record.url?scp=85208375689&partnerID=8YFLogxK
U2 - 10.1002/adom.202402304
DO - 10.1002/adom.202402304
M3 - Article
AN - SCOPUS:85208375689
SN - 2195-1071
JO - Advanced Optical Materials
JF - Advanced Optical Materials
ER -