Electric, ferroelectric and photoelectric properties of Pb(Zr,Ti)O3-Nb:SrTiO3 junctions

Author

Pintilie, L. ; Pintilie, I. ; Vrejoiu, I. ; Alexe, M.

Author_Institution

Nat. Inst. of Mater. Phys., Magurele

Volume

2

fYear

2008

fDate

13-15 Oct. 2008

Firstpage

295

Lastpage

298

Abstract

The electric, ferroelectric and photoelectric properties of Pb(Zr,Ti)O₃-Nb:SrTiO₃ (PZT-STON) junctions were investigated on a broad range of temperatures. It was found that the hysteresis loop is strongly asymmetric, due to the asymmetry in the leakage current. The capacitance-voltage characteristic has a butterfly shape although it is also asymmetric because of the different nucleation and compensation conditions at the two interfaces. The junction shows a strong photovoltaic effect in the 200- 500 nm wavelength range as short-circuit currents of the order of nA for an illuminated surface of 0.018 mm². This makes the PZT-STON junctions attractive for UV optoelectronic applications.

Keywords

MIS structures; dielectric hysteresis; ferroelectric thin films; lead compounds; leakage currents; niobium; nucleation; photovoltaic effects; semiconductor materials; strontium compounds; Pb(ZrTi)O₃-(SrTiO₃:Nb); UV optoelectronic applications; butterfly shape; capacitance-voltage characteristic; compensation; electric properties; ferroelectric properties; ferroelectric thin films; hysteresis loop; leakage current; metal-ferroelectric-semiconductor structure; n-type semiconductor; nucleation; photoelectric properties; photovoltaic effect; short-circuit currents; wavelength 200 nm to 500 nm; Electrodes; Ferroelectric materials; Hysteresis; Optical films; Photovoltaic effects; Physics; Polarization; Schottky diodes; Temperature distribution; Transistors; ferroelectric; junction; photovoltaic effect; thin films;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Conference, 2008. CAS 2008. International

Conference_Location

Sinaia

ISSN

1545-827X

Print_ISBN

978-1-4244-2004-9

Type

conf

DOI

10.1109/SMICND.2008.4703406

Filename

4703406