Improvement of humidity sensing performance and dielectric response through pH variation in CaCu3Ti4O12 ceramics

A Chattopadhyay, J Nayak - Sensors and Actuators A: Physical, 2022 - Elsevier
The internal barrier layer capacitors mechanism of CaCu 3 Ti 4 O 12 (CCTO) ceramics
contribute a colossal dielectric constant within it. However, the enormous dielectric loss …

Influence of CTO additives on microstructure and electrical properties of CCTO ceramics

Y Guo, J Tan, J Zhao - Materials Chemistry and Physics, 2022 - Elsevier
Abstract CaCu 3 Ti 4 O 12/CaTiO 3 (CCTO/CTO) composite ceramics were prepared
through in-situ reaction and solid-state sintered at 1040° C for 10 h. The phase composition …

Raman and photoacoustic spectroscopies of SnO2 thin films deposited by spin coating technique

RG Drabeski, JV Gunha, A Novatski, GB de Souza… - Vibrational …, 2020 - Elsevier
SnO 2 thin films were grown on glass substrate using a spin-coating technique. The films
grown in different layers and subjected to pressure-assisted heat treatment (PAHT) were …

Tunable photoluminescence of CaCu3Ti4O12 based ceramics modified with tungsten

H Moreno, JA Cortés, FM Praxedes, SM Freitas… - Journal of Alloys and …, 2021 - Elsevier
Abstract CaCu 3 Ti 4 O 12 (CCTO): x% W (x= 0.00, 0.02, 0.05, 0.10, 2.50, and 5.00) powders
were prepared via solid-state reaction. The effect of W addition in the (micro) structure and …

Influence of Cu-doping on the structural and optical properties of CaTiO3 powders

LH Oliveira, AP De Moura, FA La Porta… - Materials Research …, 2016 - Elsevier
Here, we report on the effect of chemical substitution on the structural and optical properties
of Cu-doped CaTiO 3 (CTO) polycrystalline powders synthesized by the polymeric precursor …

Optical and gas-sensing properties, and electronic structure of the mixed-phase CaCu3Ti4O12/CaTiO3 composites

LH Oliveira, MA Ramírez, MA Ponce, LA Ramajo… - Materials Research …, 2017 - Elsevier
Combined experimental and theoretical investigations were conducted on the electronic
structure, as well as the optical and gas-sensing properties of mixed-phase CaCu 3 Ti 4 O …

A novel selenization-free chalcopyrite CIGSSe formation in a heat-treated Cu2Se/S/Ga3Se2/S/In3Se2 multilayer thin film (ML) and ML/n-Si heterojunction …

PI Nelson, A Mohan, RR Kannan, B Vidhya… - Surfaces and …, 2023 - Elsevier
Selenization or sulphurization is a standard method for developing copper-selenium-based
ternary to quinary compounds. The route proved effective, but there are concerns about the …

Effect of Pressure-Assisted Heat Treatment on Photoluminescence Emission of α-Bi2O3 Needles

S Schmidt, ET Kubaski, DP Volanti, T Sequinel… - Inorganic …, 2015 - ACS Publications
Materials with high photoluminescence (PL) intensity can potentially be used in optical and
electronic devices. Although the PL properties of bismuth (III) oxide with a monoclinic crystal …

Improved photoluminescence emission and gas sensor properties of ZnO thin films

D Berger, AP De Moura, LH Oliveira, WB Bastos… - Ceramics …, 2016 - Elsevier
In this article, we report a comparative study of the influence of pressure-assisted (1.72 MPa)
versus ambient pressure thermal annealing on both ZnO thin films treated at 330° C for 32 h …

Photoluminescence behavior on Sr2+ modified CaCu3Ti4O12 based ceramics

S Orrego, JA Cortés, RAC Amoresi, AZ Simões… - Ceramics …, 2018 - Elsevier
Abstract Sr 2+ modified CaSr x Cu 3-x Ti 4 O 12 ceramic powders with x= ranging from 0.00
to 3.00 were prepared by solid-state reaction. The effects of Sr 2+ CCTO powders were …