This title appears in the Scientific Report :
2014
Please use the identifier:
http://dx.doi.org/10.1109/PVSC.2014.6925677 in citations.
Degradation of tandem solar cells: Separating matching effects from Staebler-Wronski Effect using the Power-Matching-Method
Degradation of tandem solar cells: Separating matching effects from Staebler-Wronski Effect using the Power-Matching-Method
In thin-film tandem solar cells the sub cells are usually connected in series. The inherent current-limitation needs to be considered when optimizing the efficiency, but furthermore leads to challenges when comparing the sub cells performances of differently matched tandem cells. We have introduced...
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Personal Name(s): | Blank, Beatrix (Corresponding Author) |
---|---|
Ulbrich, Carolin / Pieters, Bart / Gerber, Andreas / Rau, Uwe | |
Contributing Institute: |
Photovoltaik; IEK-5 |
Imprint: |
IEEE
2014
|
Physical Description: |
3457 - 3462 |
ISBN: |
978-1-4799-4398-2978-1-4799-4399-9 |
DOI: |
10.1109/PVSC.2014.6925677 |
Conference: | 2014 IEEE 40th Photovoltaic Specialists Conference (PVSC), Denver (CO), 2014-06-08 - 2014-06-13 |
Document Type: |
Contribution to a conference proceedings |
Research Program: |
Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) Thin Film Photovoltaics |
Publikationsportal JuSER |
In thin-film tandem solar cells the sub cells are usually connected in series. The inherent current-limitation needs to be considered when optimizing the efficiency, but furthermore leads to challenges when comparing the sub cells performances of differently matched tandem cells. We have introduced the Power-Matching-Method that characterizes the device not only under one standard spectrum but under various spectral distributions. By this method, the same tandem cell can be characterized under various matching conditions. Based on simulations, we demonstrate a convenient way to compare differently matched tandem solar cells. Moreover, our simulations show that the method allows distinguishing between matching effects and changes in the sub-cells properties, e.g. changes due to the Staebler-Wronski-Effect. |