EU PVSEC Programme Online
EU PVSEC 2021, 6 - 10 September 2021
Presentation: 1AO.2.3 Predicting Solar Cell Material Limits from Fourier-Transform Photocurrent Spectroscopy Measurements
Type: Oral
Date: Monday, 6th September 2021
15:15 - 16:45
Author(s): J. Holovsky, A. Peter Amalathas, K. Ridzonová
Presenter / Speaker: J. Holovsky, CTU in Prague, Prague, Czech Republic
Event: Conference Conference
Session: 1AO.2 Innovative Approaches for Solar Cells and Photovoltaic Materials
Topic: 1. 2 New Materials and Concepts for Cells and Modules
Summary / Abstract: In recent years, it has become popular to predict theoretically attainable open circuit voltage for given material based on steepness of absorption coefficient. This approach, called radiative limit, is an important improvement beyond Shockley-Queisser limit, that accounts for radiative recombination also through tail states. This limit is highly sensitive to deep states, so for evaluating such limit it is necessary to know the absorption tail down to very low values. The common approach is extrapolation of the absorptance curve while assuming semi-infinite exponential drop called Urbach tail.