scholarly journals Effect of Z1/2, EH5, and Ci1 deep defects on the performance of n-type 4H-SiC epitaxial layers Schottky detectors: Alpha spectroscopy and deep level transient spectroscopy studies

2014 ◽  
Vol 115 (22) ◽  
pp. 224504 ◽  
Author(s):  
Mohammad A. Mannan ◽  
Sandeep K. Chaudhuri ◽  
Khai V. Nguyen ◽  
Krishna C. Mandal
Keyword(s):  
Deep Level Transient Spectroscopy ◽  
Deep Level ◽  
Alpha Spectroscopy ◽  
Epitaxial Layers ◽  
Transient Spectroscopy ◽  
Spectroscopy Studies ◽  
Deep Defects

Deep level study in epitaxial 4H-SiC grown on substrates inclined toward

2002 ◽  
Vol 719 ◽  
Author(s):  
Masashi Kato ◽  
Masaya Ichimura ◽  
Eisuke Arai ◽  
Shigehiro Nishino
Keyword(s):  
Deep Level Transient Spectroscopy ◽  
Deep Level ◽  
Activation Energies ◽  
Thickness Dependence ◽  
Epitaxial Layers ◽  
Transient Spectroscopy

AbstractEpitaxial layers of 4H-SiC are grown on (0001) substrates inclined toward <1120> and <1100> directions. Defects in these films are characterized by deep level transient spectroscopy (DLTS) in order to clarify the dependence of concentrations and activation energies on substrate inclination. DLTS results show no such dependence on substrate inclination but show thickness dependence of the concentration.

Deep-level transient spectroscopy studies of thermal donor annihilation in silicon by rapid thermal annealing

1989 ◽  
Vol 4 (2) ◽  
pp. 241-243 ◽  
Author(s):  
Yutaka Tokuda ◽  
Nobuji Kobayashi ◽  
Yajiro Inoue ◽  
Akira Usami ◽  
Makoto Imura
Keyword(s):  
Heat Treatment ◽  
Thermal Stress ◽  
Thermal Annealing ◽  
Rapid Thermal Annealing ◽  
Deep Level Transient Spectroscopy ◽  
Deep Level ◽  
Electron Trap ◽  
Thermal Donor ◽  
Transient Spectroscopy ◽  
Spectroscopy Studies

The annihilation of thermal donors in silicon by rapid thermal annealing (RTA) has been studied with deep-level transient spectroscopy. The electron trap AO (Ec – 0.13 eV) observed after heat treatment at 450 °C for 10 h, which is identified with the thermal donor, disappears by RTA at 800 °C for 10 s. However, four electron traps, A1 (Ec 0.18 eV), A2 (Ec – 0.25 eV), A3 (Ec – 0.36 eV), and A4 (Ec – 0.52 eV), with the concentration of ∼1012 cm−3 are produced after annihilation of thermal donors by RTA. These traps are also observed in silicon which receives only RTA at 800 °C. This indicates that traps A1–A4 are thermal stress induced or quenched-in defects by RTA, not secondary defects resulting from annealing of thermal donors.

Midgap electron traps in n-type GaAs epitaxial layers grown by the close-spaced vapor transport technique

1991 ◽  
Vol 69 (3-4) ◽  
pp. 407-411 ◽  
Author(s):  
T. Bretagnon ◽  
A. Jean ◽  
P. Silvestre ◽  
S. Bourassa ◽  
R. Le Van Mao ◽  
...  
Keyword(s):  
Deep Level Transient Spectroscopy ◽  
Emission Rate ◽  
Deep Level ◽  
Vapor Transport ◽  
Epitaxial Layers ◽  
Spectroscopy Technique ◽  
Electron Traps ◽  
Si Doped ◽  
Transient Spectroscopy ◽  
Transport Technique

The deep-level transient spectroscopy technique was applied to the study of deep electron traps existing in n-type GaAs epitaxial layers that were prepared by the close-spaced vapor transport technique using three kinds of sources (semi-insulator-undoped, Zn-doped and Si-doped GaAs). Two midgap electron traps labelled ELCS1 and EL2 were observed in all layers regardless of the kind of source used. In addition, the effect of the electric field on the emission rate of ELCS1 is discussed and its identification to ETX2 and EL12 is suggested.

The deep level transient spectroscopy studies of a ZnO varistor as a function of annealing

1988 ◽  
Vol 63 (11) ◽  
pp. 5375-5379 ◽  
Author(s):  
A. Rohatgi ◽  
S. K. Pang ◽  
T. K. Gupta ◽  
W. D. Straub
Keyword(s):  
Deep Level Transient Spectroscopy ◽  
Deep Level ◽  
Zno Varistor ◽  
Transient Spectroscopy ◽  
Spectroscopy Studies

Deep level transient spectroscopy studies of n-CdTe and p-CdTe

Solar Cells ◽  
1988 ◽  
Vol 24 (3-4) ◽  
pp. 279-286 ◽  
Author(s):  
W.I. Lee ◽  
N.R. Taskar ◽  
S.K. Ghandhi ◽  
J.M. Borrego
Keyword(s):  
Deep Level Transient Spectroscopy ◽  
Deep Level ◽  
Transient Spectroscopy ◽  
Spectroscopy Studies

Laplace-transform deep-level transient spectroscopy studies of the G4 gold–hydrogen complex in silicon

1998 ◽  
Vol 73 (21) ◽  
pp. 3126-3128 ◽  
Author(s):  
P. Deixler ◽  
J. Terry ◽  
I. D. Hawkins ◽  
J. H. Evans-Freeman ◽  
A. R. Peaker ◽  
...  
Keyword(s):  
Laplace Transform ◽  
Deep Level Transient Spectroscopy ◽  
Deep Level ◽  
Transient Spectroscopy ◽  
Spectroscopy Studies

Deep–Level Transient Spectroscopy Studies of Czochralski–Grown N–Type Silicon

1993 ◽  
Vol 324 ◽  
Author(s):  
Yutaka Tokuda ◽  
Isao Katoh ◽  
Masayuki Katayama ◽  
Tadasi Hattori
Keyword(s):  
Crystal Growth ◽  
Deep Level Transient Spectroscopy ◽  
Deep Level ◽  
Electron Traps ◽  
Cooling Period ◽  
Type Silicon ◽  
Transient Spectroscopy ◽  
Spectroscopy Studies

AbstractElectron traps in Czochralski–grown n-type (100) silicon with and without donor annihilation annealing have been studied by deep–level transient spectroscopy. A total of eight electron traps are observed in the concentration range 1010 –1011 cm −3. It is thought that these are grown–in defects during crystal growth cooling period including donor annihilation annealing. It is suggested that two electron traps labelled A2 (Ec–0.34 eV) and A3 (Ec–0.38 eV) of these traps are correlated with oxygen–related defects. It is shown that traps A2 and A3 are formed around 400 ° C and disappear around 500–600 ° C.

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