Journal
FERROELECTRICS
Volume 500, Issue 1, Pages 250-258Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00150193.2016.1229532
Keywords
Ferroelectrics; pn junction; photovoltaic properties; coupling
Funding
- scientific research foundation of Mianyang Normal University [QD2013A07]
- Open Project of State Key Laboratory Cultivation Base for Nonmetal Composites
- Open Project of State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials (Southwest University of Science and Technology), China [12zxfk15]
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PbTiO3 (PTO) thin film was deposited on a Si-based pn-junction to form a ferroelectric-pn junction structure (PTO/pn cell). It exhibits a coupling photovoltaic property. V-oc of the PTO/pn cell is approximately equal to V-oc summation of single pn-junction structure (pn cell) and single PTO films (PTO cell). I-sc and internal quantum efficiency of the PTO/pn cell are much higher than that of the PTO cell. Photovoltaic properties of the PTO/pn cell can be tuned by controlling the direction of the polarization voltage applied on the cell. Reasons for the tuning and enhanced photovoltaic properties are analyzed.
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