A Game Changer: A Multifunctional Perovskite Exhibiting Giant Ferroelectricity and Narrow Bandgap with Potential Application in a Truly Monolithic Multienergy Harvester or Sensor
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F17%3APU125392" target="_blank" >RIV/00216305:26220/17:PU125392 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1002/adma.201700767" target="_blank" >https://doi.org/10.1002/adma.201700767</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/adma.201700767" target="_blank" >10.1002/adma.201700767</a>
Alternative languages
Result language
angličtina
Original language name
A Game Changer: A Multifunctional Perovskite Exhibiting Giant Ferroelectricity and Narrow Bandgap with Potential Application in a Truly Monolithic Multienergy Harvester or Sensor
Original language description
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.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
<a href="/en/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ADVANCED MATERIALS & PROCESSES
ISSN
0935-9648
e-ISSN
1521-4095
Volume of the periodical
29
Issue of the periodical within the volume
29
Country of publishing house
DE - GERMANY
Number of pages
7
Pages from-to
1-7
UT code for WoS article
000406677900020
EID of the result in the Scopus database
2-s2.0-85020235908