Ultrabroadband terahertz characterization of highly doped ZnO and ITO

Tianwu Wang; Maksim Zalkovskij; Krzysztof Iwaszczuk; Andrei Lavrinenko; Gururaj V. Naik; Jongbum Kim; Alexandra Boltasseva; Peter Uhd Jepsen

doi:10.1109/IRMMW-THz.2015.7327715

Ultrabroadband terahertz characterization of highly doped ZnO and ITO

Tianwu Wang
, Maksim Zalkovskij
, Krzysztof Iwaszczuk
, Andrei Lavrinenko
, Gururaj V. Naik
, Jongbum Kim
, Alexandra Boltasseva
, Peter Uhd Jepsen

Purdue University

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

The broadband complex conductivities of transparent conducting oxides (TCO), namely, aluminum-doped zinc oxide (AZO), gallium-doped zinc oxide (GZO) and tin-doped indium oxide (ITO), were investigated by using THz-TDS from 0.5 to 18 THz. The complex conductivities were accurately calculated using a thin film extraction algorithm and analyzed in terms of the Drude conductivity model. We find that a phonon response must be included in the description of the broadband properties of AZO and GZO for an accurate extraction of the scattering time, which is strongly influenced by the zinc oxide phonon resonance tail even in the low frequency part of the spectrum.

Original language	English
Title of host publication	Proceedings of 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)
Number of pages	1
Publisher	IEEE
Publication date	2015
Pages	1
DOIs	https://doi.org/10.1109/IRMMW-THz.2015.7327715
Publication status	Published - 2015
Event	40th International Conference on Infrared, Millimeter, and Terahertz Waves - Chinese University of Hong Kong, Hong Kong Duration: 23 Aug 2015 → 28 Aug 2015

Conference

Conference	40th International Conference on Infrared, Millimeter, and Terahertz Waves
Location	Chinese University of Hong Kong
Country/Territory	Hong Kong
Period	23/08/2015 → 28/08/2015

Keywords

Communication, Networking and Broadcast Technologies
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Broadband antennas
Conductivity
II-VI semiconductor materials
Indium tin oxide
Phonons
Scattering
Zinc oxide

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@inproceedings{a8048c84944c4c38957789e39a050325,

title = "Ultrabroadband terahertz characterization of highly doped ZnO and ITO",

abstract = "The broadband complex conductivities of transparent conducting oxides (TCO), namely, aluminum-doped zinc oxide (AZO), gallium-doped zinc oxide (GZO) and tin-doped indium oxide (ITO), were investigated by using THz-TDS from 0.5 to 18 THz. The complex conductivities were accurately calculated using a thin film extraction algorithm and analyzed in terms of the Drude conductivity model. We find that a phonon response must be included in the description of the broadband properties of AZO and GZO for an accurate extraction of the scattering time, which is strongly influenced by the zinc oxide phonon resonance tail even in the low frequency part of the spectrum.",

keywords = "Communication, Networking and Broadcast Technologies, Engineered Materials, Dielectrics and Plasmas, Fields, Waves and Electromagnetics, Photonics and Electrooptics, Broadband antennas, Conductivity, II-VI semiconductor materials, Indium tin oxide, Phonons, Scattering, Zinc oxide",

author = "Tianwu Wang and Maksim Zalkovskij and Krzysztof Iwaszczuk and Andrei Lavrinenko and Naik, \{Gururaj V.\} and Jongbum Kim and Alexandra Boltasseva and Jepsen, \{Peter Uhd\}",

year = "2015",

doi = "10.1109/IRMMW-THz.2015.7327715",

language = "English",

pages = "1",

booktitle = "Proceedings of 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)",

publisher = "IEEE",

address = "United States",

note = "40th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2015 ; Conference date: 23-08-2015 Through 28-08-2015",

}

Wang, T, Zalkovskij, M, Iwaszczuk, K, Lavrinenko, A, Naik, GV, Kim, J, Boltasseva, A & Jepsen, PU 2015, Ultrabroadband terahertz characterization of highly doped ZnO and ITO. in Proceedings of 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz). IEEE, pp. 1, 40th International Conference on Infrared, Millimeter, and Terahertz Waves, Hong Kong, 23/08/2015. https://doi.org/10.1109/IRMMW-THz.2015.7327715

Ultrabroadband terahertz characterization of highly doped ZnO and ITO. / Wang, Tianwu; Zalkovskij, Maksim; Iwaszczuk, Krzysztof et al.
Proceedings of 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz). IEEE, 2015. p. 1.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - Ultrabroadband terahertz characterization of highly doped ZnO and ITO

AU - Wang, Tianwu

AU - Zalkovskij, Maksim

AU - Iwaszczuk, Krzysztof

AU - Lavrinenko, Andrei

AU - Naik, Gururaj V.

AU - Kim, Jongbum

AU - Boltasseva, Alexandra

AU - Jepsen, Peter Uhd

PY - 2015

Y1 - 2015

N2 - The broadband complex conductivities of transparent conducting oxides (TCO), namely, aluminum-doped zinc oxide (AZO), gallium-doped zinc oxide (GZO) and tin-doped indium oxide (ITO), were investigated by using THz-TDS from 0.5 to 18 THz. The complex conductivities were accurately calculated using a thin film extraction algorithm and analyzed in terms of the Drude conductivity model. We find that a phonon response must be included in the description of the broadband properties of AZO and GZO for an accurate extraction of the scattering time, which is strongly influenced by the zinc oxide phonon resonance tail even in the low frequency part of the spectrum.

AB - The broadband complex conductivities of transparent conducting oxides (TCO), namely, aluminum-doped zinc oxide (AZO), gallium-doped zinc oxide (GZO) and tin-doped indium oxide (ITO), were investigated by using THz-TDS from 0.5 to 18 THz. The complex conductivities were accurately calculated using a thin film extraction algorithm and analyzed in terms of the Drude conductivity model. We find that a phonon response must be included in the description of the broadband properties of AZO and GZO for an accurate extraction of the scattering time, which is strongly influenced by the zinc oxide phonon resonance tail even in the low frequency part of the spectrum.

KW - Communication, Networking and Broadcast Technologies

KW - Engineered Materials, Dielectrics and Plasmas

KW - Fields, Waves and Electromagnetics

KW - Photonics and Electrooptics

KW - Broadband antennas

KW - Conductivity

KW - II-VI semiconductor materials

KW - Indium tin oxide

KW - Phonons

KW - Scattering

KW - Zinc oxide

U2 - 10.1109/IRMMW-THz.2015.7327715

DO - 10.1109/IRMMW-THz.2015.7327715

M3 - Article in proceedings

SP - 1

BT - Proceedings of 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)

PB - IEEE

T2 - 40th International Conference on Infrared, Millimeter, and Terahertz Waves

Y2 - 23 August 2015 through 28 August 2015

ER -

Ultrabroadband terahertz characterization of highly doped ZnO and ITO

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