Abstract
White polymer light-emitting diodes (WPLEDs) [1] have received great attention because of their potential application in backlight for flat panel displays and solid-state lighting sources. Basically, there are two approaches to realize high-efficiency WPLEDs. One is the polymer blend system [2–4] based on the additive color-mixing theory where the blend of the three primary colors (red, green, and blue) or two complementary colors (blue and orange) lead to pure white emission. However, voltage dependence of emitted color and phase separation hinder the utilization of the polymer blends [5]. To overcome these issues, an alternative approach, i.e., white-light emission from a single-component system, is desirable. Several studies have succeeded in realizing highly efficient WPLEDs based on polyfluorene derivatives containing red-, green-, and blue-emitting units in the backbone or the sidechain [6–11]. The color of the emission can be finely tuned by adjusting the composition of the RGB units and controlling the partial energy transfer from blue- to the low-energy-emissive units.
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Shao, S. (2014). All-Phosphorescent Single-Component White Polymers. In: Electrophosphorescent Polymers Based on Polyarylether Hosts. Springer Theses. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-44376-7_4
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DOI: https://doi.org/10.1007/978-3-662-44376-7_4
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