Electrical properties of metal-diamond-like-nanocomposite (Me-DLN) contacts to 6H SiC

Abstract

We have fabricated tungsten-diamond-like-nanocomposite (W-DLN) Schottky contacts on n-type and p-type 6H SiC (Si-face). The as-deposited n-type and ptype contacts are rectifying and measurement results suggest that the electrical characteristics are dominated by the properties of the tungsten SiC interface. The n-type contacts have a reverse leakage current density of 4.1 x 10 -3 Acm -2 and the p-type contacts have a reverse leakage current density of 1.4 x 10 -7 Acm -2 at -10 V. The n-type contacts have an current-voltage (I-V) extracted effective r of 0.7 eV with an ideality factor of 1.2 and a capacitance-voltage (C-V) extracted 0Bn of 1.2 eV. The p-type contacts have an I-V extracted effective 9 of 1.8 eV with an ideality factor of 1.7. Non-ideal I-V and C-V characteristics may be due to surface damage during W-DLN deposition.

Electrical characteristics of rectifying polycrystalline silicon/silicon carbide heterojunctions

“…3 In addition, nanocomposite materials form rectifying contacts to 6H SiC. 4 The potential for forming quality rectifying heterostructure contacts to SiC with non-crystalline semiconductor materials would appear to be good. Polycrystalline silicon (polysilicon) on 4H SiC is a candidate heterojunction for this type of rectifying contact.…”

INTERFACES TO 6H-SiC SUBSTRATES – TECHNOLOGY AND SIMULATION

“…In our opinion, this rather unexpected behaviour of the current could be explained by the anisotropy of the 6H-SiC Fig. 5. Complementary thermal net.…”

Enteric Pathogen Treatment Requirements for Nonpotable Water Reuse Despite Limited Exposure Data

“…3,5 In addition to the volume ingested during routine nonpotable use, nonroutine ingestion, from either potable cross-connections (e.g., as occurred in Pimpama Coomera, Australia 9 ) or accidental ingestion from misuse, can contribute to the predicted annual health risk in nonpotable reuse systems but also is difficult to characterize due to the lack of data. 10,11 This work proposes LRTs for uses lacking detailed exposure data, such as showering and decorative fountains, and evaluates the applicability of the existing nonpotable LRTs for uses with a wide range of exposure factors. We calculated GW and WW LRTs corresponding to 10 −4 infections per person per year (ppy) for selected reference pathogens across a range of nonpotable ingestion volumes, frequencies of use, and assumptions about nonroutine exposure.…”