Correlation between cathodoluminescent and electrical properties of dislocation network in the space charge region of Schottky-diode

2011 ◽  
Vol 8 (4) ◽  
pp. 1273-1277 ◽  
Author(s):  
Anton Bondarenko ◽  
Oleg Vyvenko ◽  
Ivan Isakov ◽  
Oleg Kononchuk
Keyword(s):  
Electrical Properties ◽  
Space Charge ◽  
Schottky Diode ◽  
Space Charge Region ◽  
Dislocation Network

Electrical Properties of GaN/InGaN MQW Heterojunction Diodes as Affected by Various Plasma Treatments

2001 ◽  
Vol 693 ◽  
Author(s):  
J. Kim ◽  
B. Luo ◽  
R. Mehandru ◽  
F. Ren ◽  
K. P. Lee ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Space Charge ◽  
Plasma Treatment ◽  
Space Charge Region ◽  
Forward Direction ◽  
Deuterium Plasma ◽  
Light Emitting ◽  
Plasma Treatments ◽  
Forward Current ◽  
Heterojunction Diodes

AbstractEffects of UV/O3 or deuterium plasma treatment, of annealing in air at 550°C, of annealing in N2 at 500°C and various combinations of these treatments on leakage current and resistance in the forward direction of GaN/InGaN multiquantum-well light emitting diodes MQW LEDs were studied. It was shown that the best results are achieved with 5 minutes long UV/O3 treatment. LED structures thus prepared showed effects of strong tunneling in their I-V characteristics. The space charge region was shown to be located in the GaN/InGaN superlattice SL. Passing of moderately high forward current through the structure for several hours enhanced the overall tunneling through the structure and facilitated faster tunneling between the layers in the GaN/InGaN SL.

scholarly journals The Influence of the Rate of Deformation on the Electrical Properties of Ice Monocrystals

1978 ◽  
Vol 21 (85) ◽  
pp. 277-289
Author(s):  
G. Noll
Keyword(s):  
Plastic Deformation ◽  
Electrical Properties ◽  
Strain Rate ◽  
Space Charge ◽  
Shear Strain ◽  
Dislocation Network ◽  
Shear Strain Rate ◽  
Electrical Measurements ◽  
Recovery Processes ◽  
Deformation Recovery

AbstractThe influence of plastic deformation on the electrical properties of ice monocrystals has been measured in the frequency range 10-2 to 105 Hz as a function of strain-rate and strain. The crystals have been tested mainly under uniaxial compression, their orientation being for glide in the basal glide system (0001)[1120]. The resolved shear strain-rate ranged from 2 × 10-5 to 1 × 10-3 s-1, the resolved shear strain from 3 to 60%u. Transient as well as bridge methods have been used for the electrical measurements before, during and after the deformation, Plastic deformation reduces the electrical conductivity in the space-charge dispersion range. The decrease depends strongly on the strain-rate; the size of the strain has practically no influence. After the end of the deformation recovery processes have been observed, which restored the original conductivity if the total strain was small. Rapid and large deformations however leave permanent changes. The changes of the d.c. conductivity and of the dispersion strength in the space-charge region are discussed and attributed to the increase of the dislocation density and the change of character of the dislocation network.

scholarly journals The Influence of the Rate of Deformation on the Electrical Properties of Ice Monocrystals

1978 ◽  
Vol 21 (85) ◽  
pp. 277-289
Author(s):  
G. Noll
Keyword(s):  
Plastic Deformation ◽  
Electrical Properties ◽  
Strain Rate ◽  
Space Charge ◽  
Shear Strain ◽  
Dislocation Network ◽  
Shear Strain Rate ◽  
Electrical Measurements ◽  
Recovery Processes ◽  
Deformation Recovery

Abstract The influence of plastic deformation on the electrical properties of ice monocrystals has been measured in the frequency range 10-2 to 105 Hz as a function of strain-rate and strain. The crystals have been tested mainly under uniaxial compression, their orientation being for glide in the basal glide system (0001)[1120]. The resolved shear strain-rate ranged from 2 × 10-5 to 1 × 10-3 s-1, the resolved shear strain from 3 to 60%u. Transient as well as bridge methods have been used for the electrical measurements before, during and after the deformation, Plastic deformation reduces the electrical conductivity in the space-charge dispersion range. The decrease depends strongly on the strain-rate; the size of the strain has practically no influence. After the end of the deformation recovery processes have been observed, which restored the original conductivity if the total strain was small. Rapid and large deformations however leave permanent changes. The changes of the d.c. conductivity and of the dispersion strength in the space-charge region are discussed and attributed to the increase of the dislocation density and the change of character of the dislocation network.

Drift of interstitial iron in a space charge region of p-type Si Schottky diode

1999 ◽  
Vol 273-274 ◽  
pp. 395-397 ◽  
Author(s):  
S Koveshnikov ◽  
B Choi ◽  
N Yarykin ◽  
G Rozgonyi
Keyword(s):  
Space Charge ◽  
Schottky Diode ◽  
Space Charge Region ◽  
P Type

scholarly journals Space Charge Characteristics and Electrical Properties of Micro-Nano ZnO/LDPE Composites

Crystals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 481
Author(s):  
Jun-Guo Gao ◽  
Xia Li ◽  
Wen-Hua Yang ◽  
Xiao-Hong Zhang
Keyword(s):  
Electrical Properties ◽  
Space Charge ◽  
Synergistic Effects ◽  
Nano Particles ◽  
Breakdown Field ◽  
Nano Composite ◽  
Nano Zno ◽  
Additive Particles ◽  
Ldpe Composites ◽  
Short Connection

The synergistic effects of zinc oxide (ZnO) Micro/Nano particles simultaneously filled in low-density polyethylene (LDPE) on the space charge characteristics and electrical properties has been investigated by melt blending micro-scale and nanoscale ZnO additive particles into LDPE matrix to prepare Micro-ZnO, Nano-ZnO, and Micro-Nano ZnO/LDPE composites. The morphological structures of composite samples are characterized by Polarizing Light Microscopy (PLM), and the space charge accumulations and insulation performances are correlated in the analyses with Pulse Electronic Acoustic (PEA), DC breakdown field strength, and conductance tests. It is indicated that both the micro and nano ZnO fillers can introduce plenty of heterogeneous nuclei into the LDPE matrix so as to impede the LDPE spherocrystal growth and regularize the crystalline grains in neatly-arranged morphology. By filling microparticles together with nanoparticles of ZnO additives, the space charge accumulations are significantly inhibited under an applied DC voltage and the minimum initial residual charges with the slowest charge decaying rate have been achieved after an electrode short connection. While the micro-nano ZnO/LDPE composites acquire the lowest conductivity, the breakdown strengths of the ZnO/LDPE nanocomposite and micro-nano composite are, respectively, 13.7% and 3.4% higher than that of the neat LDPE material.

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