Ultraviolet Photoelectron Spectroscopy

UPS Analysis

Convert UPS measurement files into source-spectrum graphs, then review source evidence before work-function, onset, energy-level, or energy-level-alignment analysis.

Open UPS Analysis Tool

Supported formats

.txt, .csv, .dat, .tsv, .xlsx

Available analysis features

  • Basic Graph

    Review the uploaded UPS energy-intensity spectrum, verify axis direction, and check source quality before any derived calculation is trusted.

    Basic Graph preserves uploaded UPS source evidence; review axis direction, photon energy, bias metadata, and row quality before derived analysis.

  • Work Function

    Fit the secondary electron cutoff with visible baseline and edge windows to review WF, corrected cutoff, and fit quality.

    Work Function values depend on cutoff window selection, baseline handling, photon energy, and bias correction; review fit quality before reporting WF.

  • VBM / HOMO Onset

    Fit the occupied-state onset with visible baseline and edge windows to review onset, IE/IP, and fit quality.

    VBM/HOMO onset values depend on baseline and edge windows; confirm onset evidence and IE/IP assumptions before comparing samples.

  • Energy Level Summary

    Combine the current WF and onset results into a report-first table with an optional compact energy-level diagram.

    Energy Level Summary combines current WF and onset candidates; check source spectrum and fit windows before using the table in reports.

  • Energy Level Alignment

    Compare target and reference energy levels with linked or manual inputs to review apparent VBO, apparent CBO, and alignment type.

    Energy Level Alignment compares UPS-derived levels under a vacuum-level or manual-reference assumption; it is not an XPS core-level interface band offset.

What this tool can review

  • Source-spectrum review

    Load energy and intensity rows and inspect the original UPS spectrum before any derived calculation is used.

  • Parser evidence

    Review row count, energy range, intensity range, axis type, axis direction, photon-energy metadata, and sample-bias metadata in the summary flow.

  • Display-only comparison

    Use display-only Y offset to compare multiple UPS spectra without rewriting source rows.

Typical use cases

  • Review UPS source spectra before work-function or onset extraction.
  • Check axis direction, photon-energy metadata, and bias metadata from uploaded files.
  • Compare multiple UPS spectra in one browser-based workspace.
  • Download graph images, summary rows, and raw parsed rows for follow-up review.

FAQ

What happens after I drop a UPS file?

The measurement file is converted into an energy versus intensity graph. From there, the workspace helps you review the source spectrum, axis metadata, parser evidence, and summary rows before derived analysis.

What can I check in the current UPS flow?

The current UPS flow includes Basic Graph, Work Function, VBM/HOMO Onset, Energy Level Summary, and Energy Level Alignment. Basic Graph shows the uploaded spectrum, row count, energy range, intensity range, axis type, axis direction, photon-energy metadata, sample-bias metadata, and parser status.

How are my measurement files handled?

Files uploaded to this analysis tool are processed in the current browser session for graph conversion and analysis. The tool does not send files outside or save them without user permission.

Supported workflow

  • Basic Graph, Work Function, VBM/HOMO Onset, Energy Level Summary, and Energy Level Alignment are the current UPS workflows shown in the workspace.
  • The current UPS public workflow focuses on Basic Graph, Work Function, VBM/HOMO Onset, Energy Level Summary, and Energy Level Alignment.
  • Display-only Y offset can be used to compare multiple spectra without changing the uploaded source rows.