期刊
NANOMATERIALS
卷 13, 期 18, 页码 -出版社
MDPI
DOI: 10.3390/nano13182521
关键词
organic light-emitting diode (OLED); blue and deep-blue OLEDs; high-efficiency; lifetime; chemical structure
This article reviews the importance of blue emission for full-color displays and solid-state lighting, as well as the performance and development of blue OLEDs. It also discusses the challenges and approaches to achieving higher efficiency and deeper blue emission.
Organic light-emitting diodes (OLEDs) have outperformed conventional display technologies in smartphones, smartwatches, tablets, and televisions while gradually growing to cover a sizable fraction of the solid-state lighting industry. Blue emission is a crucial chromatic component for realizing high-quality red, green, blue, and yellow (RGBY) and RGB white display technologies and solid-state lighting sources. For consumer products with desirable lifetimes and efficiency, deep blue emissions with much higher power efficiency and operation time are necessary prerequisites. This article reviews over 700 papers covering various factors, namely, the crucial role of blue emission for full-color displays and solid-state lighting, the performance status of blue OLEDs, and the systematic development of fluorescent, phosphorescent, and thermally activated delayed fluorescence blue emitters. In addition, various challenges concerning deep blue efficiency, lifetime, and approaches to realizing deeper blue emission and higher efficacy for blue OLED devices are also described.
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