Perovskite white light-emitting diodes with a perovskite emissive layer blended with rhodamine 6G

Perovskite white light-emitting diodes were realized by using a mixture of sky-blue MAPb(Br 0.6 Cl 0.4 ) 3 and orange-red rhodamine 6G as the emissive layer. The influences of rhodamine 6G on the properties of perovskite films were investigated using absorption spectroscopy, steady-state and time-re...

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Published inJournal of materials chemistry. C, Materials for optical and electronic devices Vol. 8; no. 37; pp. 12951 - 12958
Main Authors Chang, Che-Yu, Hong, Wei-Li, Lo, Pei-Hsuan, Wen, Tzu-Hsiang, Horng, Sheng-Fu, Hsu, Ching-Ling, Chao, Yu-Chiang
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 07.10.2020
Subjects
Chromaticity
Electron microscopes
Fluorescence
Light emitting diodes
Mapping
Microscopy
Perovskites
Photoluminescence
Rhodamine 6G
Spectrum analysis
White light
X ray photoelectron spectroscopy
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Summary:Perovskite white light-emitting diodes were realized by using a mixture of sky-blue MAPb(Br 0.6 Cl 0.4 ) 3 and orange-red rhodamine 6G as the emissive layer. The influences of rhodamine 6G on the properties of perovskite films were investigated using absorption spectroscopy, steady-state and time-resolved photoluminescence spectroscopy, X-ray diffraction, scanning electron microscopy and confocal laser-scanning fluorescence microscopy. The emissions from MAPb(Br 0.6 Cl 0.4 ) 3 and rhodamine 6G were mixed to realize white light. The CIE chromaticity coordinates of (0.33, 0.4) and (0.36, 0.40) were obtained for devices with 2 wt% and 3 wt% rhodamine 6G, respectively. Perovskite white light-emitting diodes with only a single emissive layer of halide perovskites and rhodamine 6G were realized with the CIE chromaticity coordinates of (0.33, 0.40).
Bibliography:Electronic supplementary information (ESI) available: Absorption and photoluminescence spectroscope images, XPS mapping images, scanning electron microscope images, and device performances. See DOI
10.1039/d0tc02471f
ISSN:2050-7526
2050-7534
DOI:10.1039/d0tc02471f