Recent Development of Electroluminescent Diodes Based on Phosphorescent Materials
- Corresponding author: FAN Louzhen, lzfan@bnu.edu.cn ‡Contributed equally to this paper
Citation:
YUAN Ting, MENG Ting, LI Shuhua, FAN Louzhen. Recent Development of Electroluminescent Diodes Based on Phosphorescent Materials[J]. Chinese Journal of Applied Chemistry,
;2018, 35(8): 871-880.
doi:
10.11944/j.issn.1000-0518.2018.08.180154
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(1)Ma et al prepared electric phosphorescent luminescence device for the first time in 1998. (2)Polymer:Fraser and co-workers demonstrated phosphorescence polymer in 2007[4]. (3)Carbon dots: Zhao et al realized phosphorescence by dispersing carbon dots into poly(vinyl alcohol)(PVA) in 2013[7]. (4)Single-component organics:Huang et al reported H-aggregation induced phosphorescence in purely organic compounds in 2015[8]. (5)Organic host guest system:Adachi and co-workers reported Application of organic phosphorescence materials in OLEDs in 2015[10]. (6) MOFs:Yan and Yang achieved phosphorescence in MOFs in 2016[9]
(a)POLED structure with energy levels in eV. (b)Photographs of electroluminescence during(Voltage ON) and after(Voltage OFF) the electrical excitation of a device based on host of CzSte and guest of DMFLTPD. (c)Fluorescence(black) and phosphorescence(red) spectra of a DMFLTPD-doped(1% mass fraction) film in CzSte, and EL spectra of the POLED at different time during(blue) and after(green) electrical excitation. (d)Transient EL decay curve of the device after the applied voltage was turned off. (e)EQE-current density characteristics of the POLED