Recent Patents on Chemical Engineering

Yousheng Tao  
State Key Laboratory of Structural Chemistry
Fujian Institute of Research on the Structure of Matter
Chinese Academy of Sciences


Recent Progress on Critical Cleaning of Sapphire Single-Crystal Substrates: A Mini-Review

Author(s): Dan Zhang, Yang Gan.


Sapphire single-crystals are one of the industrial favorite substrates for GaN film deposition and LED application as well as a model system for oxides’ aqueous interfacial chemistry studies. Contamination control of sapphire substrates is critical to the device fabrication and experimental studies of interfacial properties. Here we reviewed various methods reported in the literature including conventional and new wet-chemical methods, and UV/plasma methods. Special attentions were paid to their cleaning performance in terms of reliably removing organic/particulate/heavy metallic contaminants.

Keywords: Contamination control, Sapphire, Surface chemistry, Surface structure, UV/plasma cleaning methods, Wetchemical cleaning methods.

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Article Details

Year: 2013
Page: [161 - 166]
Pages: 6
DOI: 10.2174/2211334707999140331121752
Price: $100