Interface charge modulation in lead sulphide-ferroelectric ceramic heterostructures

被引：3

作者：

Pintilie, I ^{[1
]}

Pintilie, L ^{[1
]}

Pentia, E ^{[1
]}

Botila, T ^{[1
]}

Ofrim, D ^{[1
]}

机构：

[1] INTERNET SRL,BUCHAREST,ROMANIA

来源：

INFRARED PHYSICS & TECHNOLOGY | 1996年 / 37卷 / 06期

关键词：

D O I：

10.1016/S1350-4495(96)00004-7

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

An anomalous high signal was observed across lead sulphide-ferroelectric ceramic heterostructures illuminated at room temperature with light having wavelengths between 0.8 and 3.1 mu m. The frequency characteristic of this signal is similar to a high-pass filter and depends on the value of the load resistance in series with the lead sulphide thin film, This signal is only two to three times smaller than the usual photoconductive signal generated by the lead sulphide thin film. Its nature is not pyroelectric because of its frequency dependence. The interface charge released from the PbS-ferroelectric interface during polarization reversal was integrated and a hysteresis loop was obtained. Electrons and hole concentrations were evaluated from this curve. The values obtained are: 4.4 x 10(16) cm(-3) for holes and 3.4 x 10(16) cm(-3) for electrons.

引用

页码：659 / 665

页数：7

共 10 条

[1] PERFORMANCE OF SPUTTERED PB0.92BI0.07LA0.01 (FE0.405NB0.325ZR0.27)O3FERROELECTRIC MEMORY FILMS [J].