期刊
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
卷 10, 期 7, 页码 -出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2162-8777/ac164f
关键词
Schottky Diode; Mercury CV; Epitaxial Wafers; Capacitance-Voltage measurement
The passage discusses the use of Mercury probe Schottky capacitance-voltage for carrier density and resistivity profiling in silicon epitaxial layers, highlighting the importance of silicon surface preparation for high-quality CV measurements. Various methods for treating silicon surfaces are currently being used, with the treatment process being a limiting factor for measurement time and quality. Evaluations have been made on typical treatments for P-type Epitaxial silicon surfaces, as well as a novel concept involving a pretreatment chamber called PTC.
Mercury probe (Hg-probe) Schottky capacitance-voltage (CV) is widely used for carrier density and resistivity profiling in silicon epitaxial layers. Preparation of the silicon surface is crucial for obtaining high-quality CV measurements. There are a variety of methods currently being used to treat bare silicon epitaxial and polished bulk surfaces in preparation for Hg-Schottky CV measurements. The treatments include wet chemical and dry treatments. Usually, the treatment can be the limiting factor for both the measurement time and quality. In this evaluation, a number of typical treatments are evaluated for P-Type Epitaxial silicon surfaces. A novel concept for treating surfaces has also been investigated, which involves placing a silicon wafer in a chamber where it is exposed to a thermal and optimized ambient. This pretreatment chamber is referred to as PTC. A physics-based assessment of the typical P-type silicon surface treatments is made and presented.
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