![]() ![]() ![]() The principle strategy to date to fabricate direct CP-light-emitting PLEDs has been the attachment of pendent chiral side-chains onto achiral conjugated polymer backbones. ![]() 5 The direct generation of CP light from a conventional PLED would be far more favorable in terms of simplicity, compactness, energy efficiency and product cost, and thus there has been significant interest in their development. Whilst the use of wide-band reflective polarizers as passive components in polymer LED (PLED) devices is one means to engineer a CP light output, this results in a relatively complex and thick device architecture, requiring an additional liquid-crystal cell. 4 There is therefore high interest in constructing CP-light-emitting devices. ![]() Circularly polarized (CP) light is central to a large range of current and future display and photonic technologies, including highly efficient LCD backlights, 1 optical quantum information processing and communication, 2, 3 and optical spintronics. This results in low cost, large area device fabrication possibilities using printing techniques. Employing polymers as the OSC is a highly attractive approach due to their easy solution processibility. Organic light-emitting diodes (OLEDs) are devices that utilize an emissive electroluminescent organic semiconductor (OSC) thin film sandwiched between two electrodes. ![]()
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