화학공학소재연구정보센터
Thin Solid Films, Vol.517, No.24, 6558-6564, 2009
Fabrication of high breakdown voltage silicon Schottky barrier diodes using various edge termination structures
In this work, the design and fabrication of Au/n-Si Schottky barrier diodes (SBDs) with various edge termination schemes, including a reduced-surface-field-type lateral super-junction, a polycrystalline silicon (poly-Si) floating ring, and a p(+)-poly-Si guard ring, are presented. Experimental results show that the reverse leakage current of the proposed SBDs was reduced and the breakdown voltage increased with an increase of the poly-Si width of the guard ring. It was found that the device and fabrication technology developed in the present study is applicable to the realization of SBDs with a high breakdown voltage (>= 160 V), a low reverse current density (<= 5.6 mu A/cm(2)), a low forward voltage drop (<= 5.6 V @ 1 A/cm(2)), and an adjustable Schottky barrier height of 0.764 to 0.784 eV. (C) 2009 Elsevier B.V. All rights reserved.