J. Eur. Opt. Society-Rapid Publ. 22, 52( 2026) 515 voltage-dependent short-circuit current density underestimation up to �2.75 %. The proposed methodology requires an expensive spectrometer, but offers an easy in-situ implementation, providing spectral measurements for each flash hitting the DUT. Results in this work suggest to extend the measurement range further into the infrared region, as infrared spectra at higher supply voltages could differ even more from the lower supply voltages ones.
Funding
This work was financed by the Research Fund for the Italian Electrical System under the Three-Year Research Plan 2025 – 2027( DM MASE n. 388, 06.11.2024), in compliance with the Decree of April 12th, 2024.
Conflicts of interest
All authors have nothing to disclose.
Data availability statement
Data available upon reasonable request.
Author contribution statement
Conceptualization and Methodology, M. V. I., F. T., and A. M; Data Curation, Writing, and Original Draft Preparation, M. V. I.; Review & Editing, Supervision, G. T.
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