All-printed capacitors with continuous solution dispensing technology

Abstract

Printed electronics have been introduced into the commercial markets in recent years. Various printing technologies have emerged aiming to process printed electronic devices with low cost, environmental friendliness, and compatibility with large areas and flexible substrates. The aim of this study is to propose a continuous solution dispensing technology for processing all-printed thin-film capacitors on glass substrates using a leading-edge printing instrument. Among all printing technologies, this study provides concrete proof of the following outstanding advantages of this technology: high tolerance to inks, high throughput, low cost, and precise pattern transfers. Ag nanoparticle ink based on glycol ethers was used to print the electrodes. To obtain dielectric ink, a copolymer powder of poly(methyl methacrylate-co-benzoylphenyl methacrylate) containing crosslinkable side groups was dissolved in anisole. Various layouts were designed to support multiple electronic applications. Scanning electron microscopy and atomic force microscopy were used to investigate the all-printed capacitor layers formed using the proposed process. Additionally, the printed capacitors were electrically characterized under direct current and alternating current. The measured electrical properties of the printed capacitors were consistent with the theoretical results.

Printed Electronics in Radiofrequency Energy Harvesters and Wireless Power Transfer Rectennas for IoT Applications

“…Plötner et al. [ 323 ] DIW‐printed all‐printed thin‐film capacitors on glass substrates. Two dispensers with different tip apertures were used—30 µm for conductive silver paste and 60 µm for dielectric paste—to control feature size and minimize cross‐contamination.…”

“…Many researchers report the manufacturing of passive RLC components using printed electronics techniques (Figure 4a-c). Plötner et al [323] DIW-printed all-printed thin-film capacitors on glass substrates. Two dispensers with different tip apertures were used-30 μm for conductive silver paste and 60 μm for dielectric paste-to control feature size and minimize crosscontamination.…”

Inkjet Printing of All Aqueous Inks to Flexible Microcapacitors for High-Energy Storage

“…It is noted that the introduction of chitosan and particularly BNNS nanolayers enhance the efficiency, which is another proof of the film's quality improvement as a result of the chitosan incorporation as well as the ability of BNNS to suppress leakage currents and to decrease conduction losses. 38 4.4 PMMA/82 wt% CNO 39 8.5 0.12 BaTiO3/P(VDF-TrFE) 4 1.2 70 0.07 SiO2/BoPET 40 4.1 0.08 PMMA/BST 16 28 0.043 PTD 41 13 0.1 767.4 32 BNNS 12 1.1 1.63 HfO2 7 0.95 12.6@1MHz 0.0125 PMMA/BPMA 42 4.0 3 0.04 200 PBPDA 43 1.3 0.5@3MHz TAS-GP10 44 16.5 0.07 ZrSiO4 45 5.1 0.075 PVP 46 5.0(1GHz) PI 11 2.82 ±0.64 2.90 SU-8 8 3@100 Hz 0.04 14 PVPh 8 5@100 Hz 0.025 120 TAS 9 ~280 ~17@100 Hz ~0.1 PMMA/66 vol%BaSrO3 15 ~50@100 Hz ~0.…”

Dielectric Behavior of Thin Polymerized Composite Layers Fabricated by Inkjet-Printing

“…The dependence of the permittivity on the ceramic ratio has already been examined by several authors and can be described by various models under appropriate assumptions [ 17 , 18 , 19 , 20 ]. Pure polymers have also been used as a dielectric in flexibly printed capacitors, but they only show low permittivities [ 21 , 22 , 23 ].…”