Использование ИК спектроскопии для экспресс-анализа продуктов технологического процесса синтеза моносилана

2021 ◽  
Vol 23 (3) ◽  
pp. 70-75
Author(s):  
В.М. Ротштейн ◽  
Х.Б. Ашуров ◽  
Р.Х. Ашуров
Keyword(s):  
Ftir Spectrometer

Описана методика проведения экспресс-анализа триэтоксисилана и тетраэтоксисилана, являющихся промежуточными продуктами химических реакций, протекающих в рамках силановой технологии синтеза поликристаллического кремния. Для формирования методики использованы данные предварительных исследований триэтоксисилана и тетраэтоксисилана, полученные с помощью хромато-масс-спектрометра MSD 5975C–GC 7890 A. Непосредственно реализация экспресс-анализа триэтоксисилана и тетраэтоксисилана осуществлялась на ИК Фурье-спектрометре Agilent Technologies Cary 640 Series FTIR Spectrometer. При этом количественный экспресс-анализ, без необходимости наличия стандартов, производился на основе градуировочного графика, построенного с использованием соответствующих результатов хромато-масс-спектрометрических исследований.

scholarly journals Lateral PbS Photovoltaic Devices for High Performance Infrared and Terahertz Photodetectors

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1692
Author(s):  
Emmanuel K. Ampadu ◽  
Jungdong Kim ◽  
Eunsoon Oh
Keyword(s):  
High Performance ◽  
Room Temperature ◽  
Photovoltaic Device ◽  
Photovoltaic Devices ◽  
Temperature Spectrum ◽  
Terahertz Region ◽  
Room Temperature Spectrum ◽  
Ftir Spectrometer ◽  
Titanium Substrates ◽  
Deposition Conditions

We fabricated a lateral photovoltaic device for use as infrared to terahertz (THz) detectors by chemically depositing PbS films on titanium substrates. We discussed the material properties of PbS films grown on glass with varying deposition conditions. PbS was deposited on Ti substrates and by taking advantage of the Ti/PbS Schottky junction, we discussed the photocurrent transients as well as the room temperature spectrum response measured by Fourier transform infrared (FTIR) spectrometer. Our photovoltaic PbS device operates at room temperature for wavelength ranges up to 50 µm, which is in the terahertz region, making the device highly applicable in many fields.

Analysis of Captan on Nitrile Glove Surfaces Using a Portable Attenuated Total Reflection Fourier Transform Infrared Spectrometer

2005 ◽  
Vol 59 (6) ◽  
pp. 724-731 ◽  
Author(s):  
R. N. Phalen ◽  
Shane S. Que Hee
Keyword(s):  
Fourier Transform ◽  
Fourier Transform Infrared ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Surface Films ◽  
Airflow Rate ◽  
Infrared Spectrometer ◽  
Ftir Spectrometer ◽  
Selection Of ◽  
Solvent Volume

This study developed a method to produce uniform captan surface films on a disposable nitrile glove for quantitation with a portable attenuated total reflection Fourier transform infrared (ATR-FTIR) spectrometer. A permeation test was performed using aqueous captan formulation. Uniform captan surface films were produced using solvent casting with 2-propanol and a 25 mm filter holder connected to a vacuum manifold to control solvent evaporation. The coefficient of variation of the reflectance at 1735 ± 5 cm−1 was minimized by selection of the optimum solvent volume, airflow rate, and evaporation time. At room temperature, the lower to upper quantifiable limits were 0.31–20.7 μg/cm2 ( r = 0.9967; p ≤ 0.05) for the outer glove surface and 0.55–17.5 μg/cm2 ( r = 0.9409; p ≤ 0.05) for the inner surface. Relative humidity and temperature did not affect the uncoated gloves at the wavelength of captan analysis. Glove screening using ATR-FTIR was necessary as a control for between-glove variation. Captan permeation, after 8 hours exposure to an aqueous concentration of 217 mg/mL of Captan 50-WP, was detected at 0.8 ± 0.3 μg/cm2 on the inner glove surface. ATR-FTIR can detect captan permeation and can determine the protectiveness of this glove in the field.

scholarly journals Technical note: Sensitivity of instrumental line shape monitoring for the ground-based high-resolution FTIR spectrometer with respect to different optical attenuators

2017 ◽  
Vol 10 (3) ◽  
pp. 989-997 ◽  
Author(s):  
Youwen Sun ◽  
Mathias Palm ◽  
Christine Weinzierl ◽  
Christof Petri ◽  
Justus Notholt ◽  
...  
Keyword(s):  
High Resolution ◽  
Line Shape ◽  
Radiant Energy ◽  
Technical Note ◽  
Total Carbon ◽  
Atmospheric Composition ◽  
Incident Intensity ◽  
Instrumental Line ◽  
Ftir Spectrometer ◽  
Potential Strategy

Abstract. The TCCON (Total Carbon Column Observing Network) and most NDACC (Network for Detection of Atmospheric Composition Change) sites assume an ideal ILS (instrumental line shape) for analysis of the spectra. In order to adapt the radiant energy received by the detector, an attenuator or different sizes of field stop can be inserted in the light path. These processes may alter the alignment of a high-resolution FTIR (Fourier transform infrared) spectrometer, and may result in bias due to ILS drift. In this paper, we first investigated the sensitivity of the ILS monitoring with respect to application of different kinds of attenuators for ground-based high-resolution FTIR spectrometers within the TCCON and NDACC networks. Both lamp and sun cell measurements were conducted after the insertion of five different attenuators in front of and behind the interferometer. The ILS characteristics derived from lamp and sun spectra are in good agreement. ILSs deduced from all lamp cell measurements were compared. As a result, the disturbances to the ILS of a high-resolution FTIR spectrometer with respect to the insertion of different attenuators at different positions were quantified. A potential strategy to adapt the incident intensity of a detector was finally deduced.

Photoluminescence of infrared‐sensing materials using an FTIR spectrometer

1989 ◽  
Vol 60 (1) ◽  
pp. 82-86 ◽  
Author(s):  
A. R. Reisinger ◽  
R. N. Roberts ◽  
S. R. Chinn ◽  
T. H. Myers II
Keyword(s):  
Infrared Sensing ◽  
Ftir Spectrometer

Characterization of MEMS FTIR spectrometer

2011 ◽  
Author(s):  
Diaa Khalil ◽  
Yasser Sabry ◽  
Haitham Omran ◽  
Mostafa Medhat ◽  
Amr Hafez ◽  
...  
Keyword(s):  
Ftir Spectrometer

A New Industrial FT-Raman/FTIR Spectrometer

1989 ◽  
Author(s):  
Herve Guy ◽  
Pierre Beauchesne ◽  
Henry Buijs
Keyword(s):  
Ftir Spectrometer ◽  
Ft Raman

High-speed resonant FTIR spectrometer

2011 ◽  
Author(s):  
Julia Rentz Dupuis ◽  
David Carlson ◽  
David Mansur ◽  
Thomas Evans ◽  
Robert Vaillancourt ◽  
...  
Keyword(s):  
High Speed ◽  
Ftir Spectrometer
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