Manufacturing of Polymer Optical Waveguides for 3D-Opto-MID: Review of the OPTAVER Process

Hamjah, Mohd-Khairulamzari; Zeitler, Jochen; Eiche, Yannic; Lorenz, Lukas; Backhaus, Carsten; Hoffmann, Gerd-Albert; Wienke, Andreas; Kaierle, Stefan; Overmeyer, Ludger; Lindlein, Norbert; Bock, Karlheinz; Franke, Jöerg

doi:10.1109/mid50463.2021.9361620

Cited by 3 publications

(2 citation statements)

References 31 publications

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“…AJ printing is a noncontact, maskfree printing method that utilizes an AJ to deposit uniform layers of precise geometries onto different substrates. [31][32][33][34][35] This method is frequently used for printed electronics and has the advantage of being able to print onto a wide range of substrates, including flexible ones, and curved or even 3D surfaces. [33,34,36,37] The high lateral resolution of this technique will allow the selective encapsulation of those parts of OEDs, which are sensitive to environmental factors, without affecting other parts of the circuit, especially electrical contacts.…”

Section: Introductionmentioning

confidence: 99%

Aerosol‐Jet‐Printed Encapsulation of Organic Photovoltaics

Basu,

Siah,

Distler

et al. 2023

Adv Eng Mater

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Organic electronic devices (OEDs) are prone to oxygen‐ and water‐induced degradation and therefore need to be encapsulated with barrier materials. In this work, an aerosol jet (AJ)‐printing process is developed to coat perhydropolysilazane (PHPS) directly onto OEDs by adapting the print setup and systematically optimizing the process parameters. Furthermore, a novel curing process that converts PHPS to silica barrier layers is developed by combining damp heat (DH) exposure with subsequent vacuum–UV irradiation. This two‐step treatment is shown to be considerably faster and gentler than the state‐of‐the‐art curing processes and also yields a quantitatively higher conversion. Both the printing and the conversion process are fully compatible with OED devices, which is demonstrated by a damage‐free direct encapsulation of organic solar cells. The encapsulated cells show a significant reduction of degradation in DH conditions (65 °C/85% r.h.), maintaining >95% of their initial performance for >100 h. Complementary electroluminescence measurements reveal that the AJ‐printed barrier layers effectively prevent lateral water ingress into the devices. Herein, the proof of principle is provided that AJ printing can be used to print barrier layers directly onto OEDs and is thus an industrially highly relevant technology to precisely encapsulate such devices even on 3D objects.

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Section: Introductionmentioning

confidence: 99%

Aerosol‐Jet‐Printed Encapsulation of Organic Photovoltaics

Basu,

Siah,

Distler

et al. 2023

Adv Eng Mater

View full text Add to dashboard Cite

show abstract

“…Regarding printing processes, multiple techniques were investigated and evaluated according to their capability to directly print polymer waveguides on PMMA-Substrate. In previous evaluations, aerosoljet printing, inkjet printing, and dispensing were characterized [14][15][16][17][18]. These printing technologies share sequential polymer application on fixed substrates, thus being limited in productivity.…”

Section: Introductionmentioning

confidence: 99%