This software is based on the paper "Quantitative evaluation of electroluminescence images of solar cells" by O. Breitenstein et al.1). It allows to load a number of electroluminescence (EL) images to different biases, which have to be given as ASCii tables.
Background and Technology
By using an iterative procedure, from two of the EL images the software allows to calculate an image of the local area-related series resistance Rs (in units of Ωcm2) and of the local saturation current density of the diffusion current density J0 (in units of A/cm2). This procedure is based on the Fuyuki approximation saying that the luminescence intensity is proportional and the dark saturation current density is inversely proportional to an "effective diffusion length" in the base, which also takes into account a finite base thickness and backside recombination. Due to its iterative nature, the procedure works correctly even if both EL measurements are made at a relatively high voltage resp. current, which enables low acquisition times. In addition, also images of the effective diffusion length and of the effective bulk lifetime are generated. The generally unknown proportionality factor " f " may be fitted so that either the average series resistance or the average saturation current density matches the value taken from the dark I-V characteristic of the whole cell. Moreover, from one selected EL image (taken at a possibly low voltage) an "ohmic shunt" image of the ohmic parallel conductance G (given in units of S/cm2) can be derived. This procedure is based on the approximation of a homogeneous cell, hence here the series resistance and also the bulk lifetime are assumed to be homogeneous. It can only be applied to sufficiently strong ohmic shunts.
Single User license for EL-Fit (version 8.0) without source code (industry, no additional users)
Total Price: EUR 500,--
The above price includes:
Literature
Quantitative evaluation of electroluminescence images of solar cells
O. Breitenstein, A. Khanna, Y. Augarten, J. Bauer,
J.-M. Wagner, K. Iwig
physica status solidi (RRL) - Rapid Research Letters, Volume 4, Issue 1-2, pages 7–9, February 2010
PDF Download
PD Dr. Wolfgang Tröger
Physicist
Phone: +49 89 / 29 09 19-27
Email: troeger@max-planck-innovation.de
As the central technology transfer company of the Max Planck Society, Max Planck Innovation has helped bridge the gap between science and industry since 1970.
The Max Planck Society (MPG) operates as Germany’s most successful organization in basic research and is worldrenowned for its cutting-edge research. In many cases this cutting-edge research also forms the basis for innovative products and services that are implemented through licensing and spin-off companies.
Max-Planck-Innovastion advises and supports scientists of the Max Planck Society in the assessment of inventions and filing of patents. We also market patents and technologies to industry, while coaching founders on how to build up new companies based on the research results of the Max Planck Society.
Create your free account to connect with Max-Planck-Innovation GmbH and thousands of other innovative organizations and professionals worldwide
Send a request for information
to Max-Planck-Innovation GmbH
Technology Offers on Innoget are directly posted
and managed by its members as well as evaluation of requests for information. Innoget is the trusted open innovation and science network aimed at directly connect industry needs with professionals online.
Need help requesting additional information or have questions regarding this Technology Offer?
Contact Innoget support
