organic electronics – LAMPSe | Greco Group Graz https://lampselab.com LAMPSe | Greco Group Graz Tue, 19 Oct 2021 11:02:27 +0000 en-US hourly 1 https://wordpress.org/?v=6.9 https://lampselab.com/wp-content/uploads/2020/05/cropped-favicon-5-32x32.jpg organic electronics – LAMPSe | Greco Group Graz https://lampselab.com 32 32 Paper on Printed Tattoo Organic Photodiode in ACS Applied Electronic Materials + Journal Front Cover https://lampselab.com/paper-on-printed-tattoo-organic-photodiode-in-acs-applied-electronic-materials-journal-front-cover/ Mon, 14 Jun 2021 09:06:01 +0000 https://lampselab.com/?p=1402 “Temporary Tattoo Approach for a Transferable Printed Organic Photodiode“
Tattoo Photodiode_ToC

Bernhard Burtscher, Günther Leising, Francesco Greco
Publication Date: June 10, 2021
https://doi.org/10.1021/acsaelm.1c00249

Abstract

Generation of ultrathin, transferable, and imperceptible electronic devices [e.g., organic photodiode (OPD)] for multiple applications, such as personalized health monitors and wearables, is emerging due to the continuous development of materials and manufacturing processes. For such devices, the choice of a suitable substrate is of utmost importance. A water decal transfer from a temporary tattoo paper is adopted here as a substrate for ultrathin and conformable organic components because of easy and reliable transfer of a ≈600 nm robust and transparent polymer nanofilm of ethyl cellulose. Strategies for the fabrication of a transferable OPD on a temporary tattoo are investigated. A device with an overall thickness <1 μm and its performance after transfer are demonstrated. Then, efforts are put into fabricating an OPD by inkjet printing with a water-soluble active layer consisting of polythiophene and fullerene derivatives to aid cost- and material-efficient, large-scale production possibilities. Additionally, a second semitransparent electrode made of printed aluminum-doped zinc oxide and silver nanowires is used to allow usage from both sides to enhance the application potential. Both OPD examples presented here need improvement of the device performance but permitted us to highlight the versatility and application potential of temporary tattoos for transferable components. Target surfaces for the final application after transfer include artificial (flat and smooth, e.g., glass, or even complex and rough, e.g., concrete, paper, and so forth) as well as natural ones.

Featured in Journal Front COVER of June 2021 Issue

Front cover_ACS Appl Electron Mater June 21_Tattoo photodiode
A temporary tattoo printed organic photodiode (OPD) transferred onto a maple leaf. With an overall device thickness <1 μm, the tattoo OPD is able to achieve stable conformal adhesion on a variety of uneven target surfaces.
]]> Tattooable OLEDs: new publication in Advanced Electronic Materials https://lampselab.com/tattooable-oleds-new-publication-in-advanced-electronic-materials/ Thu, 28 Jan 2021 11:43:00 +0000 https://lampselab.com/?p=1169 OLED tattoo cross section & transfer on bottle

A new paper by Jonathan Barsotti et al. about Organic Light Emitting Diodes (OLEDs) on temporary tattoo. The study is a collaboration with groups of Dr. Virgilio Mattoli (CMBR IIT, Italy) and Prof. Franco Cacialli (UCL, London, UK). Ultrathin tattooable OLEDS are presented which can be transferred onto various target surfaces maintaining their functionality.

Publication  in Advanced Electronic Materials:

Ultrathin, Ultra‐Conformable, and Free‐Standing Tattooable Organic Light‐Emitting Diodes

Jonathan Barsotti, Alexandros G. Rapidis, Ikue Hirata, Francesco Greco, Franco Cacialli, Virgilio Mattoli

Advanced Electronic Materials, 2001145 (2021).

DOI: 10.1002/aelm.202001145
https://onlinelibrary.wiley.com/doi/full/10.1002/aelm.202001145

UPDATE:
The publication on the tattooable OLED got mentioned in the BBC article “Could electric tattoos be the next step in body art?”.

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