Recent Advances in Conjugated Polymers for Light Emitting Devices

Abstract

A recent advance in the field of light emitting polymers has been the discovery of electroluminescent conjugated polymers, that is, kind of fluorescent polymers that emit light when excited by the flow of an electric current. These new generation fluorescent materials may now challenge the domination by inorganic semiconductor materials of the commercial market in light-emitting devices such as light-emitting diodes (LED) and polymer laser devices. This review provides information on unique properties of conjugated polymers and how they have been optimized to generate these properties. The review is organized in three sections focusing on the major advances in light emitting materials, recent literature survey and understanding the desirable properties as well as modern solid state lighting and displays. Recently, developed conjugated polymers are also functioning as roll-up displays for computers and mobile phones, flexible solar panels for power portable equipment as well as organic light emitting diodes in displays, in which television screens, luminous traffic, information signs, and light-emitting wallpaper in homes are also expected to broaden the use of conjugated polymers as light emitting polymers. The purpose of this review paper is to examine conjugated polymers in light emitting diodes (LEDs) in addition to organic solid state laser. Furthermore, since conjugated polymers have been approved as light-emitting organic materials similar to inorganic semiconductors, it is clear to motivate these organic light-emitting devices (OLEDs) and organic lasers for modern lighting in terms of energy saving ability. In addition, future aspects of conjugated polymers in LEDs were also highlighted in this review.

Roll‐to‐Roll fabrication of large area functional organic materials

“…[101][102][103][104] OLEDs in general are widely explored and are already in use for display and lighting applications. The layer structure of PLEDs is almost identical to organic solar cells with a light-emitting layer instead of a light-absorbing layer as seen in Figure 5.…”

Structure and Morphology Control in Thin Films of Conjugated Polymers for an Improved Charge Transport

“…Recently, π-conjugated polymers have attracted great attention due to their extensive applications in electronic devices such as field-effect transistors (FETs), organic photovoltaic cells (OPVs), organic light-emitting diodes (OLEDs) and so on [1][2][3][4][5][6][7]. Compared with inorganic semiconductors and organic π-conjugated small molecules, the family of conjugated polymers has great advantages in its low weight, easy solution-processing and suitability to industrial manufacturing of large-area devices such as roll-to-roll routes [8][9][10].…”

The Preparation and Fluorescence of Conjugated Polymer Nanoparticles with Triphenylamine Derivatives

“…And palladium-catalyzed coupling reactions (Suzuki coupling, Heck coupling and Sonogashira coupling) tend to be used to prepare CPs [3]. Moreover, nanoparticles based on CPs show greatly potential applications in biosensor and optoelectronic device, and so on [4]. Conjugated polymer nanoparticles (CPNs) have attracted a board attention from home and abroad scholar because of their easy synthesis, less toxicity and more biocompatibility [5].…”