Optical Properties of Lead-Free NKN Films from Transmission and Spectral Ellipsometry

被引：1

作者：

Schwarz, R. ^{[1
,2
]}

Santos, L. ^{[2
,3
]}

Ayouchi, R. ^{[1
,2
]}

Bhattacharyya, S. R. ^{[1
,2
]}

Mardolcar, U. ^{[4
,5
]}

Leal, M. ^{[1
,2
]}

Kholkin, A. ^{[6
,7
]}

机构：

[1] Inst Super Tecn, Dept Phys, Lisbon, Portugal

[2] Inst Super Tecn, ICEMS, Lisbon, Portugal

[3] Inst Super Tecn, Dept Chem Engn, Lisbon, Portugal

[4] IST, Dept Phys, Lisbon, Portugal

[5] FCUL, Ctr Mol Sci & Mat, Lisbon, Portugal

[6] Univ Aveiro, DECV, P-3800 Aveiro, Portugal

[7] Univ Aveiro, CICECO, P-3800 Aveiro, Portugal

来源：

FERROELECTRICS | 2013年 / 446卷 / 01期

关键词：

Band gap; optical transmission; spectral ellipsometry; NKN; thin film; PLD; THIN-FILMS;

D O I：

10.1080/00150193.2013.821018

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thin films of lead-free NaxK1-xNbO3 (NKN) were prepared by pulsed laser deposition (PLD) from ceramic targets of stoichiometric NKN or doped with 6% of lithium niobate (LN). At a deposition temperature of 600 degrees C a strong dependence of film morphology on laser fluence is revealed by SEM microscopy. Optical properties like band gap and index of refraction were obtained through transmission measurements and analysis based on the Tauc model. The results were compared to spectral ellipsometry using a fit to the Tauc-Lorentz model, and slightly smaller band gap values were obtained. C-V characteristics of sandwich structures yielded high permittivity of 380 in pure NKN films and tunability at 1kHz of 3.2% at 1.5 MV/m applied electric field.

引用

页码：118 / 127

页数：10

共 50 条

[1] COMPLEX DIELECTRIC FUNCTION IN LEAD-FREE NKN FILMS
Schwarz, R.
Ayouchi, R.
Bhattacharyya, S. R.
Leal, M.
Mardolcar, U.
Santos, L.
Bdikin, I.
Rai, R.
Coondoo, I.
Kholkin, A.
2012 INTERNATIONAL SYMPOSIUM ON APPLICATIONS OF FERROELECTRICS HELD JOINTLY WITH 11TH IEEE ECAPD AND IEEE PFM (ISAF/ECAPD/PFM), 2012,
[2] Dielectric and Ferroelectric Properties of Lead-Free NKN and NKN-Based Ceramics
Suchanicz, J.
Smeltere, I.
Finder, A.
Konieczny, K.
Garbarz-Glos, B.
Bujakiewicz-Koronska, R.
Latas, M.
Antonova, M.
Sternberg, A.
Sokolowski, M.
FERROELECTRICS, 2011, 424 : 53 - 58
[3] Structures and Properties of Lead-Free NKN Piezoelectric Ceramics
Jarupoom, P.
Pengpat, K.
Eitssayeam, S.
Intatha, U.
Rujijanagul, G.
Tunkasiri, T.
FERROELECTRICS LETTERS SECTION, 2008, 35 (5-6) : 119 - 127
[4] Stability of Optical Responses from Lead-free Perovskite Films
Ushakova, E. V.
Matuhina, A. I.
Sokolova, A. V.
Cherevkov, S. A.
Bogdanov, K. V.
Dubavik, A.
Baranov, M. A.
Litvin, A. P.
Takai, K.
Fedorov, A. V.
Baranov, A. V.
OPTICS AND SPECTROSCOPY, 2019, 127 (06) : 1110 - 1116
[5] Stability of Optical Responses from Lead-free Perovskite Films
E. V. Ushakova
A. I. Matuhina
A. V. Sokolova
S. A. Cherevkov
K. V. Bogdanov
A. Dubavik
M. A. Baranov
A. P. Litvin
K. Takai
A. V. Fedorov
A. V. Baranov
Optics and Spectroscopy, 2019, 127 : 1110 - 1116
[6] The effect of adding CuO on the structure and properties of NKN-based lead-free piezoceramics
Li, Xiang
Xiao, Ding-Quan
Wu, Lang
Zhu, Jian-Guo
Yu, Ping
Wu, Jia-Gang
Huang, Xiao-Lei
Wang, Yuan-Yu
Gongneng Cailiao/Journal of Functional Materials, 2009, 40 (03): : 387 - 389
[7] Optical Properties of Lead and Lead-Free Halide Perovskites
Boukachabia, S.
Bentayeb, F. Z.
Goncalves, J. N.
JOURNAL OF ELECTRONIC MATERIALS, 2023, 52 (09) : 5810 - 5821
[8] Optical Properties of Lead and Lead-Free Halide Perovskites
S. Boukachabia
F. Z. Bentayeb
J. N. Gonçalves
Journal of Electronic Materials, 2023, 52 : 5810 - 5821
[9] Review of Sintering Technologies, Structural Characteristics, and Piezoelectric Properties of NKN-Based Lead-Free Ceramics
Tae-Gon Lee
Sahn Nahm
Transactions on Electrical and Electronic Materials, 2019, 20 : 385 - 402
[10] Review of Sintering Technologies, Structural Characteristics, and Piezoelectric Properties of NKN-Based Lead-Free Ceramics
Lee, Tae-Gon
Nahm, Sahn
TRANSACTIONS ON ELECTRICAL AND ELECTRONIC MATERIALS, 2019, 20 (05) : 385 - 402

← 1 2 3 4 5 →