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Molecular Crystals and Liquid Crystals Volume 655, 2017 - Issue 1: 14th International Conference on Frontiers of Polymers and Advanced Materials (14th ICFPAM)
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Original Articles

Influence of Li+:V2O5 doping on Nb2O5 thin films electrochemical performance

G. F. AzevedoCDTec, Universidade Federal de Pelotas, Pelotas-R, Brazil;Instituto Federal Sul-rio-grandense, Pelotas-RS, Brazil
,
R. M. J. LemosCentro de Ciências Químicas, Farmacêuticas e de Alimentos – CCQFA- Universidade Federal de Pelotas, Pelotas-RS, Brazil
,
J. AndradeIQSC-USP, São Carlos-SP, Brazil
,
K. R. L. CastagnoInstituto Federal Sul-rio-grandense, Pelotas-RS, Brazil
,
A. GundelUniversidade Federal do Pampa, Bagé-RS, Brazil
,
C. M. CholantCDTec, Universidade Federal de Pelotas, Pelotas-R, Brazil
,
C. F. AzevedoCentro de Ciências Químicas, Farmacêuticas e de Alimentos – CCQFA- Universidade Federal de Pelotas, Pelotas-RS, Brazil
,
A. PawlickaIQSC-USP, São Carlos-SP, Brazil
&
C. O. AvellanedaCDTec, Universidade Federal de Pelotas, Pelotas-R, BrazilCorrespondence[email protected]
 show all
Pages 71-78 | Published online: 07 Dec 2017
 
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ABSTRACT

Aiming to improve electrochromic properties of niobium pentoxide (Nb2O5) there were synthesized new, doped with lithium trifluoromethane sulfonate salt (LiCF3SO3), and vanadium pentoxide (Nb2O5:Li+:V2O5) thin films. A study of these films focused on influence of doping on the electrochromic performance of these films. It was observed that Nb2O5:Li+:V2O5 presents a reversible and fast insertion/extraction kinetics. A maximum charge density for three layers' film was −36.0 mC cm−2, and it corresponded to spectral transmission change of ΔT = 66%, i.e., variation from 80 to 20% from transparent to colored states.

Funding

The authors are indebted to FAPERGS (grant 12/2239–9) and CNPq (grant 305029/2013–4) for the financial support given to this research.

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