This title appears in the Scientific Report :
2014
Please use the identifier:
http://dx.doi.org/10.1016/j.solmat.2014.04.020 in citations.
Efficient hybrid inorganic/organic tandem solar cells with tailored recombination contacts
Efficient hybrid inorganic/organic tandem solar cells with tailored recombination contacts
In this work, the authors present a 7.5% efficient hybrid tandem solar cell with the bottom cell made of amorphous silicon and a Si-PCPDTBT:PC70BM bulk heterojunction top cell. Loss-free recombination contacts were realized by combing Al-doped ZnO with either the conducting polymer composite PEDOT:P...
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Personal Name(s): | Albrecht, Steve (Corresponding Author) |
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Grootoonk, Björn / Neubert, Sebastian / Roland, Steffen / Wördenweber, Jan / Meier, Matthias / Schlatmann, Rutger / Gordijn, Aad / Neher, Dieter | |
Contributing Institute: |
Photovoltaik; IEK-5 |
Published in: | Solar energy materials & solar cells, 127 (2014) S. 157 - 162 |
Imprint: |
Amsterdam
North Holland
2014
|
DOI: |
10.1016/j.solmat.2014.04.020 |
Document Type: |
Journal Article |
Research Program: |
Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) Thin Film Photovoltaics |
Publikationsportal JuSER |
In this work, the authors present a 7.5% efficient hybrid tandem solar cell with the bottom cell made of amorphous silicon and a Si-PCPDTBT:PC70BM bulk heterojunction top cell. Loss-free recombination contacts were realized by combing Al-doped ZnO with either the conducting polymer composite PEDOT:PSS or with a bilayer of ultrathin Al and MoO3. Optimization of these contacts results in tandem cells with high fill factors of 70% and an open circuit voltage close to the sum of those of the sub-cells. This is the best efficiency reported for this type of hybrid tandem cell so far. Optical and electrical device modeling suggests that the efficiency can be increased to ~12% on combining a donor polymer with suitable absorption onset with PCBM. We also describe proof-of-principle studies employing light trapping in hybrid tandem solar cells, suggesting that this device architecture has the potential to achieve efficiencies well above 12%. |