Organic-component dependent thermal conductivity reduction in ALD/MLD grown ZnO: organic superlattice thin films

Ramin Ghiyasi; Milena Milich; John A. Tomko; Patrick E. Hopkins; Maarit Karppinen

doi:10.1063/5.0052450

Organic-component dependent thermal conductivity reduction in ALD/MLD grown ZnO: organic superlattice thin films

Ramin Ghiyasi
, Milena Milich
, John A. Tomko
, Patrick E. Hopkins
, Maarit Karppinen^*

^*Corresponding author for this work

University of Virginia

Research output: Contribution to journal › Article › Scientific › peer-review

19 Citations (Scopus)

97 Downloads (Pure)

Abstract

Inorganic-organic superlattice (SL) thin films are intriguing candidates for flexible thermoelectric applications; in such SLs, the heat conduction can be efficiently blocked at the inorganic/organic interfaces. Fabrication of these materials using the atomic/molecular layer deposition (ALD/MLD) technique allows precise layer-sequence manipulation. Another unique advantage of ALD/MLD is its capability to yield conformal coatings even on demanding substrates such as textiles. These benefits have been demonstrated in previous works for SL thin films where ZnO serves as the inorganic matrix and hydroquinone as the organic component. In this work, we extend the study to three other organic components, i.e., p-phenylenediamine, terephthalic acid, and 4,4 '-oxydianiline, to address the importance of the bonding structure and the density difference at the inorganic/organic interface, and the thickness of the monomolecular organic blocking layer.

Original language	English
Article number	211903
Number of pages	5
Journal	Applied Physics Letters
Volume	118
Issue number	21
DOIs	https://doi.org/10.1063/5.0052450
Publication status	Published - 24 May 2021
MoE publication type	A1 Journal article-refereed

Funding

This project has received funding from the European Union's Horizon 2020 Research and Innovation programme under the Marie Sklodowska-Curie Grant Agreement (No. 765378) and the Academy of Finland (Profi 3). We acknowledge the use of the RawMatters Finland Infrastructure (RAMI) at Aalto University. We appreciate support from the Army Research Office Grant (No. W911NF-16-1-0406).

Keywords

ATOMIC LAYER DEPOSITION

Access to Document

10.1063/5.0052450

CHEM_Ghiyasi_et_al_Organic-component_dependent_thermal_2021_APLFinal published version, 1.61 MBLicence: Unspecified

Cite this

@article{d32ce019e0684af6a0e8c4f9c97c0bab,

title = "Organic-component dependent thermal conductivity reduction in ALD/MLD grown ZnO: organic superlattice thin films",

abstract = "Inorganic-organic superlattice (SL) thin films are intriguing candidates for flexible thermoelectric applications; in such SLs, the heat conduction can be efficiently blocked at the inorganic/organic interfaces. Fabrication of these materials using the atomic/molecular layer deposition (ALD/MLD) technique allows precise layer-sequence manipulation. Another unique advantage of ALD/MLD is its capability to yield conformal coatings even on demanding substrates such as textiles. These benefits have been demonstrated in previous works for SL thin films where ZnO serves as the inorganic matrix and hydroquinone as the organic component. In this work, we extend the study to three other organic components, i.e., p-phenylenediamine, terephthalic acid, and 4,4 '-oxydianiline, to address the importance of the bonding structure and the density difference at the inorganic/organic interface, and the thickness of the monomolecular organic blocking layer.",

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author = "Ramin Ghiyasi and Milena Milich and Tomko, \{John A.\} and Hopkins, \{Patrick E.\} and Maarit Karppinen",

note = "This project has received funding from the European Union's Horizon 2020 Research and Innovation programme under the Marie Sk{\l}odowska-Curie Grant Agreement (No. 765378) and the Academy of Finland (Profi 3). We acknowledge the use of the RawMatters Finland Infrastructure (RAMI) at Aalto University. We appreciate support from the Army Research Office Grant (No. W911NF-16-1-0406).",

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month = may,

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AU - Ghiyasi, Ramin

AU - Milich, Milena

AU - Tomko, John A.

AU - Hopkins, Patrick E.

AU - Karppinen, Maarit

N1 - This project has received funding from the European Union's Horizon 2020 Research and Innovation programme under the Marie Skłodowska-Curie Grant Agreement (No. 765378) and the Academy of Finland (Profi 3). We acknowledge the use of the RawMatters Finland Infrastructure (RAMI) at Aalto University. We appreciate support from the Army Research Office Grant (No. W911NF-16-1-0406).

PY - 2021/5/24

Y1 - 2021/5/24

N2 - Inorganic-organic superlattice (SL) thin films are intriguing candidates for flexible thermoelectric applications; in such SLs, the heat conduction can be efficiently blocked at the inorganic/organic interfaces. Fabrication of these materials using the atomic/molecular layer deposition (ALD/MLD) technique allows precise layer-sequence manipulation. Another unique advantage of ALD/MLD is its capability to yield conformal coatings even on demanding substrates such as textiles. These benefits have been demonstrated in previous works for SL thin films where ZnO serves as the inorganic matrix and hydroquinone as the organic component. In this work, we extend the study to three other organic components, i.e., p-phenylenediamine, terephthalic acid, and 4,4 '-oxydianiline, to address the importance of the bonding structure and the density difference at the inorganic/organic interface, and the thickness of the monomolecular organic blocking layer.

AB - Inorganic-organic superlattice (SL) thin films are intriguing candidates for flexible thermoelectric applications; in such SLs, the heat conduction can be efficiently blocked at the inorganic/organic interfaces. Fabrication of these materials using the atomic/molecular layer deposition (ALD/MLD) technique allows precise layer-sequence manipulation. Another unique advantage of ALD/MLD is its capability to yield conformal coatings even on demanding substrates such as textiles. These benefits have been demonstrated in previous works for SL thin films where ZnO serves as the inorganic matrix and hydroquinone as the organic component. In this work, we extend the study to three other organic components, i.e., p-phenylenediamine, terephthalic acid, and 4,4 '-oxydianiline, to address the importance of the bonding structure and the density difference at the inorganic/organic interface, and the thickness of the monomolecular organic blocking layer.

KW - ATOMIC LAYER DEPOSITION

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DO - 10.1063/5.0052450

M3 - Article

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VL - 118

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 21

M1 - 211903

ER -

Organic-component dependent thermal conductivity reduction in ALD/MLD grown ZnO: organic superlattice thin films

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

HYCOAT: A European Training Network for Functional Hybrid Coatings by Molecular Layer Deposition

PROFI 3: Yliopistojen profiloitumisen vahvistaminen PROFI

Raw Materials Research Infrastructure

Cite this

Organic-component dependent thermal conductivity reduction in ALD/MLD grown ZnO: organic superlattice thin films

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Projects

HYCOAT: A European Training Network for Functional Hybrid Coatings by Molecular Layer Deposition

PROFI 3: Yliopistojen profiloitumisen vahvistaminen PROFI

Equipment

Raw Materials Research Infrastructure

Cite this