Electrical Conductivity and Photodetection in 3D‐Printed Nanoporous Structures via Solution‐Processed Functional Materials

Kai Xia; Zheqin Dong; Qing Sun; Rafaela Debastiani; Sida Liu; Qihao Jin; Yang Li; Ulrich W. Paetzold; Peter Gumbsch; Uli Lemmer; Yolita M. Eggeler; Pavel A. Levkin; Gerardo Hernandez‐Sosa

doi:10.1002/admt.202300408

journal article·2023-12Open access

Electrical Conductivity and Photodetection in 3D‐Printed Nanoporous Structures via Solution‐Processed Functional Materials

Kai Xia, Zheqin Dong, Qing Sun, Rafaela Debastiani, Sida Liu, Qihao Jin, Yang Li, Ulrich W. Paetzold, Peter Gumbsch, Uli Lemmer, Yolita M. Eggeler, Pavel A. Levkin, Gerardo Hernandez‐Sosa

Advanced Materials Technologies· Volume 8· Issue 23

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Source abstract

Abstract

Abstract 3D‐printed conductive structures are highly attractive due to their great potential for customizable electronic devices. While the traditional 3D printing of metal requires high temperatures to sinter metal powders or polymer/metal composites, low or room temperature processes will be advantageous to enable multi‐material deposition and integration of optoelectronic applications. Herein, digital light processing technology and inkjet printing are combined as an effective strategy to fabricate customized 3D conductive structures. In this approach, a 3D‐printed nanoporous (NPo) polymeric material is used as a substrate onto which a nanoparticle‐based Ag ink is printed. SEM and X‐ray nano computed tomography (nanoCT) measurements show that the porous morphology of the pristine NPo is retained after deposition and annealing of the Ag ink. By optimizing the deposition conditions, conductive structures with sheet resistance <2 Ω sq⁻¹ are achieved when annealing at temperatures as low as 100 °C. Finally, the integration of an inkjet‐printed photodetector is investigated based on an organic semiconductor active layer onto the NPo substrate. Thus, the potential of this approach is demonstrated for the additive manufacturing of functional 3D‐printed optoelectronic devices.

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Research context

Polymers Ceramics & glasses Nanomaterials Electronic materials Composites Materials processing

OpenAlex topics: Nanomaterials and Printing Technologies · Advanced Sensor and Energy Harvesting Materials · Additive Manufacturing and 3D Printing Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Light Technology Institute (LTI) Karlsruhe Institute of Technology (KIT) Engesserstrasse 13 76131 Karlsruhe Germany

InnovationLab Speyerer Strasse 4 69115 Heidelberg Germany

Institute of Biological and Chemical Systems – Functional Molecular Systems (IBCS‐FMS) Karlsruhe Institute of Technology (KIT) Hermann‐von‐Helmholtz‐Platz 1 76344 Eggenstein‐Leopoldshafen Germany

Institute of Organic Chemistry (IOC) Karlsruhe Institute of Technology (KIT) Kaiserstrasse 12 76131 Karlsruhe Germany

Microscopy of Nanoscale Structures & Mechanisms (MNM) Laboratory for Electron Microscopy (LEM) Karlsruhe Institute of Technology (KIT) Engesserstrasse 7 76131 Karlsruhe Germany

Institute of Nanotechnology (INT) Karlsruhe Institute of Technology (KIT) Hermann‐von‐Helmholtz‐Platz 1 76344 Eggenstein‐Leopoldshafen Germany

Karlsruhe Nano Micro Facility (KNMFi) Karlsruhe Institute of Technology (KIT) Hermann‐von‐Helmholtz‐Platz 1 76344 Eggenstein‐Leopoldshafen Germany

Institute of Microstructure Technology (IMT) Karlsruhe Institute of Technology (KIT) Hermann‐von‐Helmholtz‐Platz 1 76344 Eggenstein‐Leopoldshafen Germany

Fraunhofer Institute for Mechanics of Materials IWM Wöhlerstrasse 11 79108 Freiburg Germany

Funding

Deutsche Forschungsgemeinschaft · Carl-Zeiss-Stiftung

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