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Title: | Detection and depth analyses of deep levels generated by ion implantation in n- and p-type 4H-SiC |
Authors: | Kawahara, Koutarou Alfieri, Giovanni Kimoto, Tsunenobu https://orcid.org/0000-0002-6649-2090 (unconfirmed) |
Keywords: | aluminium annealing deep level transient spectroscopy deep levels energy gap high-temperature effects ion implantation nitrogen phosphorus semiconductor growth silicon compounds wide band gap semiconductors |
Issue Date: | Jul-2009 |
Publisher: | American Institute of Physics |
Journal title: | JOURNAL OF APPLIED PHYSICS |
Volume: | 106 |
Issue: | 1 |
Thesis number: | 013719 |
Abstract: | The authors investigated deep levels in the whole energy range of bandgap of 4H-SiC, which are generated by low-dose N+, P+, and Al+ implantation, by deep level transient spectroscopy (DLTS). Ne+-implanted samples have been also prepared to investigate the pure implantation damage. In the n-type as-grown material, the Z1/2 (EC−0.63 eV) and EH6/7 (EC−1.6 eV) centers are dominant deep levels. At least, seven peaks (IN1, IN3–IN6, IN8, and IN9) have emerged by implantation and annealing at 1000 °C in the DLTS spectra from all n-type samples, irrespective of the implanted species. After high-temperature annealing at 1700 °C, however, most DLTS peaks disappeared, and two peaks, IN3 and IN9, which may be assigned to Z1/2 and EH6/7, respectively, survive with a high concentration over the implanted atom concentration. In the p-type as-grown material, the D (EV+0.40 eV) and HK4 (EV+1.4 eV) centers are dominant. Two peaks (IP1 and IP3) have emerged by implantation and annealing at 1000 °C, and four traps IP2 (EV+0.39 eV), IP4 (EV+0.72 eV), IP7 (EV+1.3 eV), and IP8 (EV+1.4 eV) are dominant after annealing at 1700 °C in all p-type samples. The IP2 and IP8 may be assigned to the HS1 and HK4 centers, respectively. The depth analyses have revealed that the major deep levels are generated in the much deeper region than the implant profile. |
Rights: | Copyright 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in JOURNAL OF APPLIED PHYSICS 106, 013719 (2009) and may be found at http://link.aip.org/link/JAPIAU/v106/i1/p013719/s1 |
URI: | http://hdl.handle.net/2433/109895 |
DOI(Published Version): | 10.1063/1.3159901 |
Related Link: | http://link.aip.org/link/JAPIAU/v106/i1/p013719/s1 |
Appears in Collections: | Journal Articles |
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