CdSe Nanoparticle/Metal-Organic Inks For Printable Electronics

Author:

Schulz Douglas L.

Abstract

ABSTRACTThe research objective of this project was the spray deposition of CdSe films using a nanoparticle CdSe suspension as the precursor ink. This ink consisted of CdSe nanoparticles (nano-CdSe) mixed with a “reactive dispersant” in a non-aqueous solvent. The reactive dispersant, a metal-organic molecule, served two purposes; (1) to form a dispersed CdSe suspension at room temperature, and (2) to thermally “unzip” giving CdSe and a byproduct. The CdSe thereby formed could be deposited at the grain boundaries and serve to physically and electrically connect the CdSe nanoparticles at moderate, plastic-compatible temperatures. If electronics-grade CdSe layers could be produced at low deposition temperatures, this approach may be applicable to printed CdSe-based thin film field-effect transistors (TFTs) on flexible substrates.

Publisher

Springer Science and Business Media LLC

Subject

General Engineering

Reference5 articles.

1. 4 XRD and early TGA experiments utilized impure complexes as the purification step had yet to be developed. While the shape of the TGA curves for the crude samples was nearly identical to that of the purified, the total mass loss was much less. This observation might explain the impurities in the TGA residue of the crude materials.

2. 3 The observation of greater that 100% expected weight loss can be explained by residual solvent in the dried (i.e., dynamic vacuum for 48 h with one intermediate grinding) complex as was confirmed by nuclear magnetic resonance spectroscopy in deuterated solvent.

3. All-Inorganic Field Effect Transistors Fabricated by Printing

4. Polycrystalline CdSe films for thin film transistors

5. CdSe – The Ideal Semiconductor for Active Matrix Displays;Brody;SPIE,1992

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1. Printed silicon as diode and FET materials – Preliminary results;Journal of Non-Crystalline Solids;2008-05

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