16.01.2013 Views

SEC-400series - Shavo Technologies

SEC-400series - Shavo Technologies

SEC-400series - Shavo Technologies

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

FTIR Gas Analyzers: FG-100 Series<br />

sGas spectral library with more than 260 profiles<br />

You can carry out efficient analysis by checking results against<br />

more than 260 profiles, including PFCs, in our spectral library.<br />

HORIBA is also able to provide a full range of application support,<br />

such as generation of calibration curves for specific applications<br />

(CVD, D/E, abatement) and additional post-delivery upgrades.<br />

CF4<br />

CF3l<br />

CH2F2<br />

CH3F<br />

CHBr3<br />

CHF3<br />

C2F4<br />

C2F6<br />

C2H2F4<br />

C2H3F3<br />

C2H4F2<br />

C2HF5<br />

C3F6<br />

C3F8<br />

sFlow Schematics<br />

Sampling<br />

gas<br />

inlet 1<br />

Sampling<br />

gas<br />

inlet 2<br />

N2 gas<br />

inlet<br />

Inline Gas Monitor: IR-150 Series<br />

sMeasurement principle<br />

The infrared analysis method<br />

works because the molecules of<br />

different types of gas absorb light<br />

of different wavelengths. Gas is<br />

passed through an infrared<br />

absorption cell, and an infrared<br />

detector measures how much<br />

infrared has been absorbed. That<br />

value is then converted into a gas<br />

density value.<br />

sSample connection layout<br />

IR-150<br />

C4F10<br />

C4F6<br />

C4F8<br />

C5F8<br />

C5H3F9O<br />

C8F18<br />

CO<br />

Sampling unit<br />

Analyzer<br />

SC-IR<br />

signal cable<br />

CO2<br />

COF2<br />

HBr<br />

HCl<br />

HF<br />

NO<br />

N2O<br />

Gas cell<br />

Pressure<br />

sensor<br />

Sample<br />

detector<br />

Reference<br />

detector<br />

IR-150CU<br />

special controller<br />

sSolutions for compound semiconductor processes<br />

Light<br />

Dark Light at detector<br />

Infrared absorption spectrum of<br />

measured gas when gas is not<br />

flowing.<br />

Amount of light changes<br />

as density increases.<br />

Drift resulting from changes<br />

in the amount of light,<br />

cell window cleanliness,<br />

processing time variations, etc.<br />

Sample: The wavelength band generated as the gas is flowing, as a result of<br />

changes in the amount of light due to the gas's absorption.<br />

Reference: The wavelength band indicating that there are no changes in the amount<br />

of light even when the gas is flowing, since there is no absorption by the gas.<br />

Density signal<br />

Density alarm<br />

(contact point output)<br />

AC 100 V<br />

The software, optimized for real-time analysis, features trend display of<br />

current values, auto-saving of results, and other functions. Simple<br />

operation procedures provide highly accurate measurement results.<br />

Simultaneous and continuous measurements for up to 20 constituents<br />

are now possible. The software can be run on a laptop computer using<br />

the Windows ® operating system.<br />

In the United States and other countries, Windows ® sSoftware optimized for real-time analysis<br />

is a registered trademark of Microsoft Corporation.<br />

sData<br />

HORIBA STEC offers all the components required for stable vaporization systems for<br />

the liquid sources used in compound semiconductor processing, including TMAI,<br />

TMIn, TMGa, DEZn, and others. Vaporization of liquid sources involves control of<br />

bubbling gas flow, as well as precise control of pressure in the liquid source<br />

cylinders and the gas density generated. HORIBA STEC offers mass flow controllers<br />

(<strong>SEC</strong> series), capacitance manometers (VG series), piezo valves (PV series), and<br />

feedback controllers (PCU). HORIBA STEC also offers a complete lineup of compact<br />

monitors in the IR-150 series that directly measure and control the density of the gas<br />

generated using the non-dispersive infrared (NDIR) method. Software that provides<br />

unified control of all of these devices is also available, enabling HORIBA STEC to<br />

provide complete liquid source vaporization systems to suit any customer's needs.<br />

NO2<br />

NH3<br />

NF3<br />

SF6<br />

Si(OC2H5)4<br />

SiF4<br />

SiH4<br />

SO2F2<br />

SOF2<br />

B(OCH3)3<br />

BCl3<br />

Sample gas/<br />

zero gas outlet<br />

Sample gas/<br />

zero gas outlet<br />

Sample gas/<br />

zero gas outlet<br />

Purge gas<br />

N2 purge specifications are also<br />

available for the interferometer.<br />

Software operation procedure<br />

Feedback data Step control data<br />

Even if the density of the source<br />

material changes due to some factor<br />

or other, the inline gas monitor's<br />

feedback system makes it possible<br />

to maintain stable density at all times.<br />

85<br />

60<br />

80<br />

75 Sample flow<br />

50<br />

70 Control flow<br />

40<br />

65<br />

30<br />

60<br />

55<br />

IR output<br />

20<br />

50<br />

Density<br />

10<br />

45<br />

0<br />

0 2 4 6 8 10 12 14 16<br />

Time (min.)<br />

Output (F.S.%)<br />

When the sample flow changes, the IR output is used<br />

to apply feedback to the control flow. The density is<br />

the ideal density curve as calculated from the divided<br />

ratio by two MFCs.<br />

Flow rate (CCM)<br />

220<br />

200<br />

Pressure<br />

150<br />

180<br />

160<br />

140<br />

control 125<br />

100<br />

120<br />

75<br />

100<br />

80<br />

50<br />

60 IR-150's<br />

output<br />

25<br />

40<br />

0<br />

0 2<br />

4<br />

6 8 10<br />

Time (min.)<br />

IR-150's pressure effect<br />

Output (F.S.%)<br />

Control system<br />

Stable density output relative to<br />

the gas density is also possible.<br />

PCU<br />

Enter number of scans<br />

Basic operating screen (spectrum display)<br />

Measurement results real-time display<br />

Measurement data<br />

auto-save function<br />

Measurement<br />

start button<br />

Measurement<br />

conditions<br />

set-up screen<br />

Trend graph<br />

High-precision FTIR gas analysis technology 48<br />

Concentration display<br />

Concentration log<br />

Stored data can be processed by MS-Excel and other applications.<br />

UR <strong>SEC</strong> IR-150 PV<br />

VG<br />

Pressure (kPa)<br />

Chamber

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!