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Pressure Engineering Promising Transparent Oxides with Large Conductivity Enhancement and Strong Thermal Stabilityopen access

Authors
Liu, XuqiangLi, MingtaoZhang, QianWang, YimingLi, NanaPeng, ShangYin, TaoGuo, SonghaoLiu, YeYan, LiminZhang, DongzhouKim, JaeyongLiu, GangWang, YandongYang, Wenge
Issue Date
Nov-2022
Publisher
WILEY
Keywords
electrical conductivity; high pressure; optical transmission; thermal stability; transparent conducting oxides
Citation
ADVANCED SCIENCE, v.9, no.31, pp.1 - 10
Indexed
SCIE
SCOPUS
Journal Title
ADVANCED SCIENCE
Volume
9
Number
31
Start Page
1
End Page
10
URI
https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/185796
DOI
10.1002/advs.202202973
ISSN
2198-3844
Abstract
Transparent conducting oxides (TCO) with high electrical conductivity and high visible light transparency are desired for a wide range of high-impact engineering. Yet, usually, a compromise must be made between conductivity and transparency, limiting the practical application of a TCO to the next level. Furthermore, TCO performance is highly sensitive to composition, so conventional synthesis methods, such as chemical doping, cannot unravel the mysteries of the quantitative structure-performance relationship. Thus, improving the fundamental understanding or creating materials-by-design has limited success. Here, a strategy is proposed to modulate the lattice and electronic and optical properties precisely by applying pressure on a TCO. Strikingly, after compression-decompression treatment on the indium titanium oxides (ITiO), a highly transparent and metastable phase with two orders of magnitude enhancement in conductivity is synthesized from an irreversible phase transition. Moreover, this phase possesses previously unattainable filter efficiency on hazardous blue light up to 600 degrees C, providing potential for healthcare-related applications with strong thermal stability up to 200 degrees C. These results demonstrate that pressure engineering is a clean and effective tool for tailoring functional materials that are not achievable by other means, providing an exciting alternative property-tuning dimension in materials science.
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