Vapor‐Phase Microprinting of Multicolor Phosphorescent Organic Light Emitting Device Arrays

Abstract

Multicolor electrophosphorescent organic light-emitting diode (OLED) pixel patterning by organic vapor jet printing (OVJP) is demonstrated, showing that this technique is capable of rapidly generating high-definition full-color displays. The resolution limits, and means to achieve them are described using a combination of simulation and experimental approaches.

Photo‐patterning of Highly Efficient State‐of‐the‐Art Phosphorescent OLEDs Using Orthogonal Hydrofluoroethers

“…Such a profile is crucial for highperformance electrical operation as deviations from a rectangular profile would lead to inhomogeneous currents running through the device. In the past it has been proven challenging to achieve sharp edges and good thickness homogeneity with other methods including OVJP [11] and thermal patterning. [32] Next, we investigate the impact of an HFE treatment on state-of-the art phosphorescent p-i-n OLEDs in terms of electrical and optical characteristics as well as longterm device stability.…”

“…[11] Photolithography is a mature, cost-effective, inherently parallel patterning technique, with well-established registration protocols, high yield and resolution. Most importantly, there is a fully developed infrastructure for processing, since photolithography is the standard structuring technology in the inorganic semiconductor industry.…”

Compact Layers of Hybrid Halide Perovskites Fabricated via the Aerosol Deposition Process—Uncoupling Material Synthesis and Layer Formation

“…, TiO 2 ) and possible applications, we refer to the reviews [20,23]. In contrast to the related method of organic vapor-phase deposition, which has been used successfully for the fabrication of organic light-emitting diodes yet requires heating of the equipment and the carrier gas to temperatures in the range of 200–300 °C, the aerosol formation and deposition occurs at room temperature [33,34]. Thus, the principle of film formation is also called Room Temperature Impact Consolidation (RTIC) [23].…”

Printable Displays and Light Sources for Sensor Applications: A Review

“…[93] Marcello et al [94] developed a completely integrated OLED-based protein biochip for human antigen detection by coupling the OLED emission spectrally to an antibody-conjugated fluorophore (as a marker). Vapor-phase microprinting of different phosphorescent OLEDs [95] and different chemically light-emitting polymers [49] can thus be seen as potential sources for arrayed detection techniques, given reports of use of printing methods to development of integrated flexible sensors. [96] Integration of wearable sensors [97] can lead to other applications such as analysis of human sweat, which contains an immense amount of diagnostic information.…”