3.5.7  The conventional DLTS file structure

The conventional DLTS data file has the “dlt” extension. The header of the file is practically the same as for each individual transient file (extension “iso”). The header contains all measurement parameters and consists of sections similar to the “iso” file. The header is followed by a section with the conventional DLTS spectrum where the data are in rows separated by commas.

[data]

No=, temperature, DLTS_ampl (in pF)

This is a common section for all conventional DLTS measurement modes.

If the measurement is performed in the Exponential Fitting mode with the CT normalisation curve simultaneously measured then this CT normalisation curve is stored in the section following the [data] section. The structure of this section is following:

[ct]

No=, temperature, capacitance (in pF)

If the one-exponential fitting has been allowed then a following sections contain the results of this type of analysis. The running numbers correspond to those in the [data] section. If some of the numbers are missing thus this means that for this particular transient the procedure failed to give any result.

[1exp]

No=, temperature, EmissionRate, Amplitude, BaseLine

The next section, if present, contains the results obtained with the Fast_DC library. For each temperature the results are in rows, and there are as many entries as many mono-exponential components have been in the given transient found. There is no base line data in this section.

[3exp]

No=, temperature, EmissionRate1, Amplitude1, EmissionRate2, Amplitude2……

 

The data file structure in the [data],  [1exp], and [3exp] sections complies with the Comma Separated Variable (CSV) data standard acceptable by most common data spreadsheets.

 

If the AutoSave subsequent transient check box is checked then each transient measured is saved with the default name and a running number added (the Exponential fitting mode only). These transients are not saved in the current data base.