Universität zu Köln

Bartek, Nicole, Shvartsman, Vladimir V., Bouyanfif, Houssny, Schmitz, Alexander, Bacher, Gerd, Olthof, Selina, Sirotinskaya, Svetlana, Benson, Niels and Lupascu, Doru C. (2021). Band Gap of Pb(Fe0.5Nb0.5)O-3 Thin Films Prepared by Pulsed Laser Deposition. Materials, 14 (22). BASEL: MDPI. ISSN 1996-1944

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Abstract

Ferroelectric materials have gained high interest for photovoltaic applications due to their open-circuit voltage not being limited to the band gap of the material. In the past, different lead-based ferroelectric perovskite thin films such as Pb(Zr,Ti)O-3 (Pb,La)(Zr,Ti)O-3 and PbTiO3 were investigated with respect to their photovoltaic efficiency. Nevertheless, due to their high band gaps they only absorb photons in the UV spectral range. The well-known ferroelectric PbFe0.5Nb0.5O3 (PFN), which is in a structure similar to the other three, has not been considered as a possible candidate until now. We found that the band gap of PFN is around 2.75 eV and that the conductivity can be increased from 23 S/mu m to 35 S/mu m during illumination. The relatively low band gap value makes PFN a promising candidate as an absorber material.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Bartek, Nicole UNSPECIFIED UNSPECIFIED UNSPECIFIED Shvartsman, Vladimir V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bouyanfif, Houssny UNSPECIFIED UNSPECIFIED UNSPECIFIED Schmitz, Alexander UNSPECIFIED UNSPECIFIED UNSPECIFIED Bacher, Gerd UNSPECIFIED UNSPECIFIED UNSPECIFIED Olthof, Selina UNSPECIFIED UNSPECIFIED UNSPECIFIED Sirotinskaya, Svetlana UNSPECIFIED UNSPECIFIED UNSPECIFIED Benson, Niels UNSPECIFIED UNSPECIFIED UNSPECIFIED Lupascu, Doru C. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-584247
DOI:	10.3390/ma14226841
Journal or Publication Title:	Materials
Volume:	14
Number:	22
Date:	2021
Publisher:	MDPI
Place of Publication:	BASEL
ISSN:	1996-1944
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language LANTHANUM-ZIRCONATE-TITANATE; PHOTOVOLTAIC PROPERTIES; ELECTRONIC-STRUCTURE; OPTICAL-PROPERTIES; LEAD; EFFICIENCY; PBTIO3; DEVICE; PB(ZR Multiple languages Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/58424