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Organic Light‐Emitting Diode (OLED) and Quantum Dot (QD) Inks and Application

: Lange, A.; Wedel, A.


Handbook of industrial inkjet printing
Weinheim: Wiley-VCH, 2017
ISBN: 978-3-527-68716-9
ISBN: 978-3-527-33832-0
ISBN: 978-3-527-68717-6
ISBN: 3-527-68717-3
ISBN: 3-527-68716-5
ISBN: 978-3-527-68720-6
ISBN: 978-3-527-68718-3
Book Article
Fraunhofer IAP ()

This chapter discusses general guidelines for preparing and cleaning substrates for organic light‐emitting diode (OLEDs) with inkjet printed polymers. Typically, glass or polymer‐based substrates that have been coated with a transparent, conductive oxide are used for OLEDs. In general, any particles that are not removed from the indium tin oxide (ITO) surface must be smaller than the combined thicknesses of the polymer layers that will be printed with inkjet. The chapter presents a general overview that shows how to adjust a spin coating dispersion for inkjet printing. During inkjet printing, all of the formulation that is ejected from the printhead contributes to film formation. Security is an important issue in many fields such as brand as well as identification (ID) protection. The most promising inorganic luminescent nanoparticles are quantum dots (QDs) based on core‐shell semiconductor materials due to their tunable and highly efficient emission properties as well as their thermal and photochemical stability.