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http://www.nano.UGent.be

SOPPOM+ Solution-Based Processing and Printing of Functional Materials

for electronic, photonic and energy applications Prof. Z. Hens

Physics and Chemistry of Nanostructures

Ghent University

Presented by

SOPPOM+ – Rationale

Zeger Hens

The SOPPOM program

reducing product cost (of PV modules) by implementing solution-based processing and printing

as alternative production technologies

generic know-how on precursors – inks – processing – transformation –

in-situ characterization

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Presented by

SOPPOM know-how

Zeger Hens

Precursors •  Particles

§  Bottom-up, colloidal synthesis routes (advanced functionality)

§  Semiconductors / metal oxides / metals

§  Top-down milling approaches (low-cost)

•  Up-scaled production facility

•  Molecular complexes §  ‘green’ chemistry §  Metal oxides / metals

Presented by

SOPPOM know-how

Zeger Hens

Inks / Dispersions •  Nanocrystal surface

chemistry §  Understanding binding of

ligands / surfactants / dispersants to nanocrystals

§  Analysis methodology §  Conceptual chemical

framework

•  Functional ligands

•  Ink formulation §  Bridging scientific

laboratory and functional R&D approaches

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Presented by

SOPPOM know-how

Zeger Hens

Processing / Transformation •  Precursor Coatings

§  Various technologies at industrial partners (screen printing / inkjet printing)

•  Transformation §  Insight in annealing /

sintering §  Extensive in-situ analysis

tools

•  Nanoparticle functionalized foils or coatings

Presented by

A Practical Example

Zeger Hens

Reactive CIGS precursor inks •  CuInS2 precursor inks stabilized by Se-based species

•  Heat treatment on printed film can replace gas-phase selenization

Maes et al, Sol Energy Mat, doi:10.1016/j.solmat.2015.08.023

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Presented by

SOPPOM+

solution-based processing and printing as manufacturing technologies are relevant far beyond

photovoltaics

Application-driven Internet of Things – need for low-cost smart objects

Printed sensor tag

Sensor Electronics

Memory Display Power

Forms basis of first SOPPOM+ ICON Met@link Focused on printed conductors

Presented by

SOPPOM+

solution-based processing and printing as manufacturing technologies are relevant far beyond

photovoltaics

Application-driven Internet of Things – need for low-cost smart objects

Printed sensor tag

Sensor Electronics

Memory Display Power

Forms basis of the broad scope of SOPPOM+ towards materials and applications

(Fundamental) Research on Functional, Solution-Processable Nanomaterials is Imperative

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Presented by

SOPPOM+ An example from literature

Prof. Zeger Hens

Scott Stinner et al, Nano Lett. 2015, 15 , 7155–7160

flexible, high-speed analog and digital

colloidal nanocrystal integrated circuits

Colloidal nanocrystal film is the conductive channel

Innovation-driven New materials – enable new technologies

Presented by

Semiconductor Nanocrystals

Zeger Hens

•  Lab-scale and intermediate-scale colloidal synthesis metods established

Ø  Can be extended to metals, metal oxides, …

•  By synthesis ready for solution-based processing

•  Enable all opto-electronic applications of semiconductors and more

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Semiconductor Nanocrystals Semiconductor Nanocrystals (Quantum Dots)

Zeger Hens

Smaller nanocrystals

Higher frequency

Light absorption/emission shifts to the blue

!="# CdSe, InP, perovskite, …

printable / solution processable downconversion

phosphor with tunable emission /

adjustable absorption

Presented by

Semiconductor Nanocrystals Quantum Dots – processing & applications

Zeger Hens

highly controlled surface chemistry

ideal for matrix embedding

new opportunities in display applications

IWT-SBO Lumicor

Low power consumption High color gamut

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Presented by

Semiconductor Nanocrystals Quantum Dots – processing & applications

Zeger Hens

highly controlled surface chemistry

ideal for matrix embedding

opportunities in luminescent solar concentrators

CdSe, QDs in PMMA

Meinardi et al, Nature Nano. 2014, 8 , 392

Presented by

Semiconductor Nanocrystals Quantum Dots – processing & applications

Zeger Hens

new opportunities in IR photodetectors

Unique opportunity as little if any alternative solution-processable

IR absorbers are available

Tunable IR absorbers

Extensively studied for

PV applications

IWT-SBO MIRIS

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Presented by

SOPPOM+ A summary of the roadmap

Prof. Zeger Hens

Presented by

Thanks to The Met@link consortium Quantum-dot dispersion testing Funding

Prof. Zeger Hens