Electrochemical Determination of the Ionization Energy and the Electron Affinity of Lead Halide Perovskite Thin Films: A Comparison to Ultraviolet Photoelectron Spectroscopy
Katarina Gugujonovic, Rene Zahrhuber, Thorsten Wagner, Felix Mayr, Elisabeth Leeb, Munise Cobet, Niyazi Serdar Sariciftci, Markus Clark Scharber · 2026
Read Electrochemical Determination of the Ionization Energy and the Electron Affinity of Lead Halide Perovskite Thin Films: A Comparison to Ultraviolet Photoelectron Spectroscopy by Katarina Gugujonovic, Rene Zahrhuber, Thorsten Wagner, Felix Mayr, Elisabeth Leeb, Munise Cobet, Niyazi Serdar Sariciftci, Markus Clark Scharber (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13546371.txt.
Description
Katarina Gugujonovic and co-authors test if bench-top electrochemistry can match vacuum spectroscopy at gauging the energy levels of perovskite solar films. Two values, ionization energy and electron affinity, set how well a solar absorber lines up with its contacts. The standard tool, ultraviolet photoelectron spectroscopy, needs costly vacuum kit. The team tried cyclic voltammetry and electrochemical voltage spectroscopy on a mixed-halide perovskite series, with the bromide share swept from none to all.
Onset values were read with tangent-based scripts, with no smoothing. The light band gap rose in a straight line with bromide share. Ionization energy stayed near flat up to mid-range bromide, then rose. All methods agreed that electron affinity falls as bromide rises. The message is practical: careful electrochemistry gets close enough to the costly spectroscopy for day-to-day screening of new solar materials.
Catalog record
| CREATOR | Katarina Gugujonovic, Rene Zahrhuber, Thorsten Wagner, Felix Mayr, Elisabeth Leeb, Munise Cobet, Niyazi Serdar Sariciftci, Markus Clark Scharber |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 50 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |