Detail publikace

A Game Changer: A Multifunctional Perovskite Exhibiting Giant Ferroelectricity and Narrow Bandgap with Potential Application in a Truly Monolithic Multienergy Harvester or Sensor

BAI, Y. TOFEL, P. PALOSAARI, J. JANTUNEN, H. JUUTI, J.

Originální název

A Game Changer: A Multifunctional Perovskite Exhibiting Giant Ferroelectricity and Narrow Bandgap with Potential Application in a Truly Monolithic Multienergy Harvester or Sensor

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

An ABO3-type perovskite solid-solution, (K0.5Na0.5)NbO3 (KNN) doped with 2 mol% Ba(Ni0.5Nb0.5)O3−δ (BNNO) is reported. Such a composition yields a much narrower bandgap (≈1.6 eV) compared to the parental composition—pure KNN—and other widely used piezoelectric and pyroelectric materials (e.g., Pb(Zr,Ti)O3, BaTiO3). Meanwhile, it exhibits the same large piezoelectric coefficient as that of KNN (≈100 pC N−1) and a much larger pyroelectric coefficient (≈130 μC m−2 K−1) compared to the previously reported narrow-bandgap material (KNbO3)1−x-BNNOx. The unique combination of these excellent ferroelectric and optical properties opens the door to the development of multisource energy harvesting or multifunctional sensing devices for the simultaneous and efficient conversion of solar, thermal, and kinetic energies into electricity in a single material. Individual and comprehensive characterizations of the optical, ferroelectric, piezoelectric, pyroelectric, and photovoltaic properties are investigated with single and coexisting energy sources. No degrading interaction between ferroelectric and photovoltaic behaviors is observed. This composition may fundamentally change the working principles of state-of-the-art hybrid energy harvesters and sensors, and thus significantly increases the unit-volume energy conversion efficiency and reliability of energy harvesters in ambient environments.

Klíčová slova

multisource energy harvesting, photovoltaics, piezoelectrics, pyroelectrics

Autoři

BAI, Y.; TOFEL, P.; PALOSAARI, J.; JANTUNEN, H.; JUUTI, J.

Vydáno

4. 8. 2017

Nakladatel

WILEY-V C H VERLAG GMBH, POSTFACH 101161, 69451 WEINHEIM, GERMANY

Místo

GERMANY

ISSN

0935-9648

Periodikum

ADVANCED MATERIALS & PROCESSES

Ročník

29

Číslo

29

Stát

Spolková republika Německo

Strany od

1

Strany do

7

Strany počet

7

URL

https://doi.org/10.1002/adma.201700767

BibTex

@article{BUT141390,
  author="Yang {Bai} and Pavel {Tofel} and Jaakko {Palosaari} and Heli {Jantunen} and Jari {Juuti}",
  title="A Game Changer: A Multifunctional Perovskite Exhibiting Giant Ferroelectricity and Narrow Bandgap with Potential Application in a Truly Monolithic Multienergy Harvester or Sensor",
  journal="ADVANCED MATERIALS & PROCESSES",
  year="2017",
  volume="29",
  number="29",
  pages="1--7",
  doi="10.1002/adma.201700767",
  issn="0935-9648",
  url="https://doi.org/10.1002/adma.201700767"
}