Hbr
Hbr news and technical articles from Solid State Technology Magazine. Search Hbr latest and archived news and articles
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optimized-cylinder-materials-for-hydrogen-bromide-for-silicon-etch
(November 15, 2010) -- Delivery of HBr with consistently low water vapor (moisture ..... delivered moisture concentration in gas phase HBr . Polished AISI Cr-Mo steel, Nickel ..... device performance. Vapor phase moisture in HBr also inhibits wafer chemistries and ultimately …
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Hydrogen bromide cylinder gas ppb-level water vapor measurement
… corrosive gases such as hydrogen bromide ( HBr ) used in semiconductor manufacturing is ..... quality control of water vapor impurity in HBr cylinders requires using the instrumentation ..... the gas and liquid phases. Considering an HBr cylinder containing trace amounts of water …
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FTIR-based moisture analyers
… measurement of trace H2O contamination in corrosive gases, can reach the lower detection limit of 10 ppb of H2O in matrices of HCl, HBr , and NF3. These results are attained in real time, with measurement intervals <1 min. The spectrometer compartment is evacuated …
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Predicting plasma in wafer etch and deposition via quantum mechanics
… silicon dioxide by fluorocarbons, and Ar/ HBr etching in a microwave plasma source. Figure ..... the species are: CF 2 , CF, and F. Ar/ HBr etch process We now consider Si etching performed using Ar/ HBr plasmas. TEL has experimentally determined …
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Diverse markets require advances in metal etch
… achieve a maximum selectivity to resist, a higher HBr flow is beneficial. Increasing the HBr flow, however, gives rise to an increase in post ..... Fig. 3). Figure 3. Increasing the amount of HBr improves the selectivity to resist. Click here …
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Controlling AMCs in semiconductor and LCD fabs
… air unit (MAU); Acid gases (e.g., HBr , HCl, HF, SiF 4 ) at a ppm level continuously ..... Etching gases (CF 4 , CHF 3 , Cl 2 , HBr , HCl, SF 6 ) of several hundred ppm leaking ..... High concentrations of acid gases (SiF 4 , HBr , HCl, HF) continuously released from …
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Gas Filtration: Nickel vs. Stainless Steel Filter Assemblies
… moisture is below 1 ppmv, bromine from HBr is not incorporated beyond the native oxide ..... effect of moisture content on the extent of HBr corrosion for 316L electropolished stainless ..... coupons indicated no effect upon exposure to HBr containing less than 0.5 ppm of moisture …
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Impact of high-resolution photolithography on integrated photonics
… device [a holographic Bragg reflector ( HBR )], which may be fabricated within a ..... contour width is about 250nm. If the entire HBR device is fabricated in silicon or InP ..... adjust the spectral transfer function of the HBR , the relative amplitude and phase of optical …
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SEMICON West Exhibits Preview
… 5778 (North) Gas purifiers for CDA and HBr The latest additions to the Areskleen media ..... clean dry air (CDA) and hydrogen bromide ( HBr ) gases. The CDAP material removes moisture ..... H2O to <50 parts per billion (ppb) in HBr gas. Both materials are available in the …
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Exhaust gas monitoring: New window into semiconductor processing
… exhaust gases in a Lam etcher employing HBr /Cl 2 chemistry. A series of bare Si test ..... experiments were performed with the RDTB, while HBr /Cl2 chemistries and oxygen cleans were ..... multiple-layer patterned wafer. Cl2/ HBr etch chemistry was investigated. In this …
