The Effects of Temperature and Electric Field for the Photo-Generation of Free Carriers in Anthracene

1964 ◽  
Vol 19 (5) ◽  
pp. 695-701 ◽  
Author(s):  
Ichiroh Nakada ◽  
Yutaka Ishihara
Keyword(s):  
Electric Field ◽  
Free Carriers ◽  
Effects Of Temperature

Effects of temperature and electric field on upconversion luminescence in Er3+ -Yb3+ codoped Ba0.8 Sr0.2 TiO3 ferroelectric ceramics

2017 ◽  
Vol 100 (10) ◽  
pp. 4661-4669 ◽  
Author(s):  
Qiu Sun ◽  
Weihua Wang ◽  
Yunxing Pan ◽  
Zhikai Liu ◽  
Xiangqun Chen ◽  
...  
Keyword(s):  
Electric Field ◽  
Upconversion Luminescence ◽  
Ferroelectric Ceramics ◽  
Effects Of Temperature

scholarly journals Спектры остаточной фотопроводимости в гетероструктурах с квантовыми ямами HgTe/CdHgTe

2019 ◽  
Vol 53 (10) ◽  
pp. 1401
Author(s):  
К.Е. Спирин ◽  
Д.М. Гапонова ◽  
В.И. Гавриленко ◽  
Н.Н. Михайлов ◽  
С.А. Дворецкий
Keyword(s):  
Electric Field ◽  
Quantum Well ◽  
Carrier Concentration ◽  
Significant Role ◽  
General Trend ◽  
Persistent Photoconductivity ◽  
Free Carriers ◽  
Conductivity Type ◽  
P Type ◽  
Type Sample

Spectra of persistent photoconductivity (PPC) in HgTe/CdHgTe quantum well (QW) heterostructures of both n- and p-types have been investigated at T = 4.2 K. PPC is shown to be either positive (increase of carrier concentration in QW) or negative depending on a wavelength of the illumination. As a general trend, PPC maxima in n-type sample correspond to PPC minima in p-type samples and vice versa. It is discovered that in p-type samples the illumination with certain wavelengths results in the freezing out of free carriers in QWs but not in the conversion of the conductivity type. The latter indicates a significant role in the PPC mechanism of the built-in electric field that is switching off at the QW neutralization.

Electrical creep and fatigue in 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 ceramics

2021 ◽  
Author(s):  
Moolchand Sharma ◽  
Satyanarayan Patel ◽  
A. Arockiarajan ◽  
Rahul Vaish
Keyword(s):  
Electric Field ◽  
High Cycle Fatigue ◽  
Electric Displacement ◽  
Fatigue Tests ◽  
Ferroelectric Ceramics ◽  
Cycle Fatigue ◽  
Function Generator ◽  
Creep Analysis ◽  
Voltage Amplifier ◽  
Effects Of Temperature

In this study, the creep and fatigue characterization is performed for 0.5Ba(Zr[Formula: see text]Ti[Formula: see text]O[Formula: see text]0.5(Ba[Formula: see text]Ca[Formula: see text]TiO3 (BZT-BCT) bulk ferroelectric ceramics. A function generator is used to generate the required waveform of the voltage amplifier for fatigue and creep analysis. The evolution of polarization is studied for electrical creep. The effects of temperature and electric field on the electric displacement are studied. Hysteresis–butterfly loops are analyzed for fatigue tests for different thermal loads up to 106 cycles. It inheres that the material is stable below 75[Formula: see text]C and can withstand high cycle fatigue loads (25 Hz, ± 1.5 kV/mm).

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