Abstract
Many high permittivity crystalline dielectric thin films have a low breakdown strength, which is unfavorable for dielectric energy storage devices. In contrast, many amorphous linear dielectrics have much lower permittivities but larger breakdown strengths. Here, composite thin films with nanocrystalline particles in an amorphous matrix were explored to increase the stored energy density of dielectrics. For this purpose, thin films of lead-rich lead titanate, Pb1.1TiO3.1, were fabricated via chemical solution deposition and heat-treated at temperatures ≤400°C. Transmission electron microscopy indicated the presence of dense lead oxide nanocrystals in an amorphous lead titanate network. The films exhibit a relative permittivity of 32.6 and a low dielectric loss of 0.0008. The leakage current is approximately 10-8A/cm2, with a DC breakdown strength between 2 and 3MV/cm. The 1 kHz breakdown strength exceeds 5MV/cm. At an electric field of 5MV/cm and a measurement frequency of 1 kHz, the maximum in energy storage density was ~28 J/cm3. These properties suggest that nanocomposite Pb1.1TiO3.1 films may be a suitable candidate for integration into energy storage devices.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 250-255 |
| Number of pages | 6 |
| Journal | Journal of the Ceramic Society of Japan |
| Volume | 122 |
| Issue number | 1424 |
| DOIs | |
| State | Published - Jan 1 2014 |
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All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry
Cite this
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Amorphous-nanocrystalline lead titanate thin films for dielectric energy storage. / Michael, Elizabeth K.; Trolier-McKinstry, Susan E.
In: Journal of the Ceramic Society of Japan, Vol. 122, No. 1424, 01.01.2014, p. 250-255.Research output: Contribution to journal › Article
TY - JOUR
T1 - Amorphous-nanocrystalline lead titanate thin films for dielectric energy storage
AU - Michael, Elizabeth K.
AU - Trolier-McKinstry, Susan E.
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Many high permittivity crystalline dielectric thin films have a low breakdown strength, which is unfavorable for dielectric energy storage devices. In contrast, many amorphous linear dielectrics have much lower permittivities but larger breakdown strengths. Here, composite thin films with nanocrystalline particles in an amorphous matrix were explored to increase the stored energy density of dielectrics. For this purpose, thin films of lead-rich lead titanate, Pb1.1TiO3.1, were fabricated via chemical solution deposition and heat-treated at temperatures ≤400°C. Transmission electron microscopy indicated the presence of dense lead oxide nanocrystals in an amorphous lead titanate network. The films exhibit a relative permittivity of 32.6 and a low dielectric loss of 0.0008. The leakage current is approximately 10-8A/cm2, with a DC breakdown strength between 2 and 3MV/cm. The 1 kHz breakdown strength exceeds 5MV/cm. At an electric field of 5MV/cm and a measurement frequency of 1 kHz, the maximum in energy storage density was ~28 J/cm3. These properties suggest that nanocomposite Pb1.1TiO3.1 films may be a suitable candidate for integration into energy storage devices.
AB - Many high permittivity crystalline dielectric thin films have a low breakdown strength, which is unfavorable for dielectric energy storage devices. In contrast, many amorphous linear dielectrics have much lower permittivities but larger breakdown strengths. Here, composite thin films with nanocrystalline particles in an amorphous matrix were explored to increase the stored energy density of dielectrics. For this purpose, thin films of lead-rich lead titanate, Pb1.1TiO3.1, were fabricated via chemical solution deposition and heat-treated at temperatures ≤400°C. Transmission electron microscopy indicated the presence of dense lead oxide nanocrystals in an amorphous lead titanate network. The films exhibit a relative permittivity of 32.6 and a low dielectric loss of 0.0008. The leakage current is approximately 10-8A/cm2, with a DC breakdown strength between 2 and 3MV/cm. The 1 kHz breakdown strength exceeds 5MV/cm. At an electric field of 5MV/cm and a measurement frequency of 1 kHz, the maximum in energy storage density was ~28 J/cm3. These properties suggest that nanocomposite Pb1.1TiO3.1 films may be a suitable candidate for integration into energy storage devices.
UR - http://www.scopus.com/inward/record.url?scp=84898069598&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84898069598&partnerID=8YFLogxK
U2 - 10.2109/jcersj2.122.250
DO - 10.2109/jcersj2.122.250
M3 - Article
AN - SCOPUS:84898069598
VL - 122
SP - 250
EP - 255
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
IS - 1424
ER -