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

Hyunseok Song, Jongmoon Jang, Mahesh Peddigari, Srinivas Pattipaka, Yuho Min, Kwi Il Park, Chang Kyu Jeong, Han Eol Lee, Jung Hwan Park, Ho Yong Lee, Woon Ha Yoon, Jungho Ryu, Geon Tae Hwang

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

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.

Original languageEnglish
Pages (from-to)3364-3372
Number of pages9
JournalJournal of Materials Chemistry A
Volume11
Issue number7
DOIs
StatePublished - 27 Jan 2023

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