901624
Buffered oxide etchant (BOE) 6:1
Synonym(s):
BHF, Buffered HF
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About This Item
UNSPSC Code:
12161700
NACRES:
NA.23
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liquid
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General description
BOE 6:1 is 6 parts by volume 40% ammonium fluoride and 1 part by volume 49% HF.
Buffered oxide etchant (BOE) is a wet etchant used in microfabrication. Its primary use is in etching thin films of silicon dioxide (SiO2) or silicon nitride (Si3N4). It is a mixture of a buffering agent, such as ammonium fluoride (NH4F), and hydrofluoric acid (HF). Concentrated HF etches silicon dioxide too quickly for good process control and also peels photoresist used in lithographic patterning.
Application
Buffered oxide etchant (BOE) 6:1 can be used in the oxide removal of AlGaN/GaN-based high electron mobility transistors for gate photolithography. It can be used in a buffer oxide etchant method for the fabrication of micro biochip.
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Danger
Hazard Classifications
Acute Tox. 1 Dermal - Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - Eye Dam. 1 - Skin Corr. 1A
Storage Class
6.1B - Non-combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials
wgk_germany
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
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