| Issue |
Europhys. Lett.
Volume 57, Number 4, February 2002
|
|
|---|---|---|
| Page(s) | 592 - 596 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and opticalproperties | |
| DOI | https://doi.org/10.1209/epl/i2002-00502-1 | |
| Published online | 01 September 2002 | |
Pyroelectric luminescence via internal Poole-Frenkel effect
1
University of Cambridge, Department of Earth
Sciences - CB2 3EQ Cambridge, UK
2
University of Osnabrueck, Department of
Physics - 49069 Osnabrueck, Germany
3
NASU, Institute of Physics - 46 Prospect Nauki, Kiev,
Ukraine
Received:
8
November
2001
Accepted:
28
November
2001
Pyroelectric luminescence is a universal property of pyroelectric
materials under changing temperature. In all compounds studied,
inorganic and organic, it has two possible manifestations:
Short-emission bursts caused by discharge of the pyroelectric
field through the surrounding atmosphere and a smooth luminescence
slowly varying with temperature. This latter emission,
characteristic for the specific material, still waits for an
explanation. With 
as a sample pyroelectric we
show that this luminescence arises from a release of trapped
charge carriers, triggered by the pyrolectric field via the
Poole-Frenkel effect.
PACS: 77.70.+a – Pyroelectric and electrocaloric effects / 78.60.-b – Other luminescence and radiative recombination
© EDP Sciences, 2002
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