Issue 7, 2023

Self-powered light dimming system using a magneto-mechano-electric generator with hardener-doped Pb(Mg1/3Nb2/3)O3–Pb(Zr,Ti)O3 single crystals

Abstract

In this study, Pb(Mg1/3Nb2/3)O3–Pb(Zr,Ti)O3 (PMN-PZT) single crystals were doped with hardener Mn at variable concentrations to fabricate a high-output magneto-mechano-electric (MME) generator. The dielectric constant and dielectric loss (tan δ) of the PMN-PZT crystal were gradually decreased by doping with 0 to 0.8 mol% hardener Mn acceptor. Owing to the low energy loss and enhanced energy conversion properties of the Mn-doped hard-type PMN-PZT, the MME generator achieved an improved magnetoelectric coefficient of 783.09 V per cm·Oe, and the corresponding mechanical quality factor was 315 at 0.8 mol% Mn under resonance frequency operation conditions. The Mn-modified MME device can generate a root mean square output power of 3.3 mW when an alternating current magnetic field of 8 Oe is applied, which is ∼1.8 times higher than that of the MME generator fabricated without Mn-doping. Finally, the electric power of the hard-type PMN-PZT MME generator was directly utilized to produce a self-powered light dimming system composed of an MME harvester, an energy conversion circuit, a CdS ambient light sensor, and a light-emitting diode.

Graphical abstract: Self-powered light dimming system using a magneto-mechano-electric generator with hardener-doped Pb(Mg1/3Nb2/3)O3–Pb(Zr,Ti)O3 single crystals

Supplementary files

Article information

Article type
Communication
Submitted
25 Aug 2022
Accepted
25 Jan 2023
First published
27 Jan 2023

J. Mater. Chem. A, 2023,11, 3364-3372

Self-powered light dimming system using a magneto-mechano-electric generator with hardener-doped Pb(Mg1/3Nb2/3)O3–Pb(Zr,Ti)O3 single crystals

H. Song, J. Jang, M. Peddigari, S. Pattipaka, Y. Min, K. Park, C. K. Jeong, H. E. Lee, J. H. Park, H. Lee, W. Yoon, J. Ryu and G. Hwang, J. Mater. Chem. A, 2023, 11, 3364 DOI: 10.1039/D2TA06732C

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