Experimental Control and Statistical Analysis of Thermal Conductivity in ZnO-Benzene Multilayer Thin Films

Fabian Krahl; Ashutosh Giri; Md Shafkat Bin Hoque; Linda Sederholm; Patrick E. Hopkins; Maarit Karppinen

doi:10.1021/acs.jpcc.0c06461

Experimental Control and Statistical Analysis of Thermal Conductivity in ZnO-Benzene Multilayer Thin Films

Fabian Krahl, Ashutosh Giri, Md Shafkat Bin Hoque, Linda Sederholm, Patrick E. Hopkins, Maarit Karppinen^*

^*Corresponding author for this work

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

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Abstract

We have fabricated a model system of precisely layer-engineered inorganic-organic thin-film structures using atomic/molecular-layer deposition (ALD/MLD). The samples consist of nanoscale polycrystalline ZnO layers and intervening benzene layers, covering a broad range of layer sequences. The samples characterized in this study combined with previous publications provide an excellent sample set to examine thermal transport properties in inorganic-organic thin films. The cross-plane thermal conductivity is found to depend on multiple factors, with the inorganic-organic interface density being the dominating factor. Our work highlights the remarkable capability of interface engineering in suppressing the thermal conductivity of hybrid inorganic-organic materials, e.g., for thermoelectric applications.

Original language	English
Pages (from-to)	24731-24739
Number of pages	9
Journal	Journal of Physical Chemistry C
Volume	124
Issue number	45
DOIs	https://doi.org/10.1021/acs.jpcc.0c06461
Publication status	Published - 12 Nov 2020
MoE publication type	A1 Journal article-refereed

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title = "Experimental Control and Statistical Analysis of Thermal Conductivity in ZnO-Benzene Multilayer Thin Films",

abstract = "We have fabricated a model system of precisely layer-engineered inorganic-organic thin-film structures using atomic/molecular-layer deposition (ALD/MLD). The samples consist of nanoscale polycrystalline ZnO layers and intervening benzene layers, covering a broad range of layer sequences. The samples characterized in this study combined with previous publications provide an excellent sample set to examine thermal transport properties in inorganic-organic thin films. The cross-plane thermal conductivity is found to depend on multiple factors, with the inorganic-organic interface density being the dominating factor. Our work highlights the remarkable capability of interface engineering in suppressing the thermal conductivity of hybrid inorganic-organic materials, e.g., for thermoelectric applications. ",

author = "Fabian Krahl and Ashutosh Giri and Hoque, {Md Shafkat Bin} and Linda Sederholm and Hopkins, {Patrick E.} and Maarit Karppinen",

note = "| openaire: EC/FP7/339478/EU//LAYERENG-HYBMAT",

year = "2020",

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doi = "10.1021/acs.jpcc.0c06461",

language = "English",

volume = "124",

pages = "24731--24739",

journal = "Journal of Physical Chemistry C",

issn = "1932-7447",

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Experimental Control and Statistical Analysis of Thermal Conductivity in ZnO-Benzene Multilayer Thin Films. / Krahl, Fabian; Giri, Ashutosh; Hoque, Md Shafkat Bin; Sederholm, Linda; Hopkins, Patrick E.; Karppinen, Maarit.

In: Journal of Physical Chemistry C, Vol. 124, No. 45, 12.11.2020, p. 24731-24739.

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

TY - JOUR

T1 - Experimental Control and Statistical Analysis of Thermal Conductivity in ZnO-Benzene Multilayer Thin Films

AU - Krahl, Fabian

AU - Giri, Ashutosh

AU - Hoque, Md Shafkat Bin

AU - Sederholm, Linda

AU - Hopkins, Patrick E.

AU - Karppinen, Maarit

N1 - | openaire: EC/FP7/339478/EU//LAYERENG-HYBMAT

PY - 2020/11/12

Y1 - 2020/11/12

N2 - We have fabricated a model system of precisely layer-engineered inorganic-organic thin-film structures using atomic/molecular-layer deposition (ALD/MLD). The samples consist of nanoscale polycrystalline ZnO layers and intervening benzene layers, covering a broad range of layer sequences. The samples characterized in this study combined with previous publications provide an excellent sample set to examine thermal transport properties in inorganic-organic thin films. The cross-plane thermal conductivity is found to depend on multiple factors, with the inorganic-organic interface density being the dominating factor. Our work highlights the remarkable capability of interface engineering in suppressing the thermal conductivity of hybrid inorganic-organic materials, e.g., for thermoelectric applications.

AB - We have fabricated a model system of precisely layer-engineered inorganic-organic thin-film structures using atomic/molecular-layer deposition (ALD/MLD). The samples consist of nanoscale polycrystalline ZnO layers and intervening benzene layers, covering a broad range of layer sequences. The samples characterized in this study combined with previous publications provide an excellent sample set to examine thermal transport properties in inorganic-organic thin films. The cross-plane thermal conductivity is found to depend on multiple factors, with the inorganic-organic interface density being the dominating factor. Our work highlights the remarkable capability of interface engineering in suppressing the thermal conductivity of hybrid inorganic-organic materials, e.g., for thermoelectric applications.

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SP - 24731

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JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

SN - 1932-7447

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Experimental Control and Statistical Analysis of Thermal Conductivity in ZnO-Benzene Multilayer Thin Films

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Novel hybrid materials by ALD/MLD: from fundamentals towards applications

Molecular-Layer-Engineered Inorganic-Organic Hybrid Materials

OtaNano - Nanomicroscopy Center

Raw Materials Research Infrastructure

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Experimental Control and Statistical Analysis of Thermal Conductivity in ZnO-Benzene Multilayer Thin Films

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Projects

Novel hybrid materials by ALD/MLD: from fundamentals towards applications

Molecular-Layer-Engineered Inorganic-Organic Hybrid Materials

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OtaNano - Nanomicroscopy Center

Raw Materials Research Infrastructure

Cite this