Journal Article

FZJ-2022-05943

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png The Balance of Thermodynamic Potentials in Solar Cells Investigated by Numerical Device Simulations

Komoll, F. ; Rau, U. (Corresponding author)FZJ*

2022
IEEE New York, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/33145  doi:10.1109/JPHOTOV.2022.3207600

Abstract: This article presents an extension of the classical gain/loss analysis of Brendel et al. based on the balance of free energy in a solar cell. We consider the full balance of all thermodynamic potentials by separating the excess free energy into excess chemical and excess electrostatic potentials. A layer-by-layer analysis of an exemplary silicon solar cell shows that the different functionalities of different parts of the solar cell, e.g., the neutral base and the space charge regions, are well reflected in the different pictures provided by looking at the thermodynamic potentials separately. Additionally, we investigate fill factor losses by insufficient majority carrier collection at the back contact of the solar cell with two prototypical passivation layers. Here we show that resistive losses, i.e., losses in the electrostatic potential can be distinguished from kinetic losses, i.e., losses in the chemical potential.

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Contributing Institute(s):

1. Photovoltaik (IEK-5)

Research Program(s):

1. 1215 - Simulations, Theory, Optics, and Analytics (STOA) (POF4-121) (POF4-121)

Appears in the scientific report 2022

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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