Electrical properties and stability of low temperature annealed (Zn,Cu) co-doped (Ni,Mn)(3)O-4 spinel thin films
- Authors
- Duc Thang Le; Cho, Jeong Ho; Ju, Heongkyu
- Issue Date
- Jul-2021
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- Aging; cubic spinel; hopping mechanism; negative temperature coefficient; nickel manganite; zinc
- Citation
- JOURNAL OF ASIAN CERAMIC SOCIETIES, v.9, no.3, pp.838 - 850
- Journal Title
- JOURNAL OF ASIAN CERAMIC SOCIETIES
- Volume
- 9
- Number
- 3
- Start Page
- 838
- End Page
- 850
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/82355
- DOI
- 10.1080/21870764.2021.1920157
- ISSN
- 2187-0764
- Abstract
- Toward the development of infrared (IR) detectors, nickel–manganite-based thin films were initially prepared from (Ni0.2Mn2.8–xCu x)Cl2 (0.010 ≤ x ≤ 0.040) solutions using the liquid flow deposition (LFD) method. The influence of Cu on the negative temperature coefficient of resistance (NTCR) characteristic of the films annealed at 400°C was investigated. It was found that the incorporation of Cu can effectively enhance electrical conductivity; however, it degrades both the thermal sensitivity and stability of the nickel–manganite films. The investigation was extended by further modifying the composition with Zn. The results revealed that by co-doping Cu with a proper amount of Zn the temperature coefficient of resistance (TCR) could be tailored, while a relatively low resistivity (ρ) of the final products was retained. Specially, when 0.01 mol Zn was added to a precursor solution containing 0.025 mol Cu, the resulting specimen possessed a TCR = 2.82% K–1 and a ρ = 820 Ω (measured at RT). More importantly, compared to Zn-free films, the (Zn,Cu) co-doped compositions showed much improved electrical stability, with an aging coefficient (ΔR/R) as low as 4.6%, after aging at 150°C in air for 500 h. The results suggest that the (Zn,Cu) co–doped (Ni,Mn)3O4 thin films have a promising application in IR detectors. © 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group on behalf of The Korean Ceramic Society and The Ceramic Society of Japan.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 바이오나노대학 > 나노물리학과 > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.