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000173075 0247_ $$2doi$$a10.1016/j.solmat.2014.04.020
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000173075 1001_ $$0P:(DE-HGF)0$$aAlbrecht, Steve$$b0$$eCorresponding Author
000173075 245__ $$aEfficient hybrid inorganic/organic tandem solar cells with tailored recombination contacts
000173075 260__ $$aAmsterdam$$bNorth Holland$$c2014
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000173075 520__ $$aIn this work, the authors present a 7.5% efficient hybrid tandem solar cell with the bottom cell made of amorphous silicon and a Si-PCPDTBT:PC70BM bulk heterojunction top cell. Loss-free recombination contacts were realized by combing Al-doped ZnO with either the conducting polymer composite PEDOT:PSS or with a bilayer of ultrathin Al and MoO3. Optimization of these contacts results in tandem cells with high fill factors of 70% and an open circuit voltage close to the sum of those of the sub-cells. This is the best efficiency reported for this type of hybrid tandem cell so far. Optical and electrical device modeling suggests that the efficiency can be increased to ~12% on combining a donor polymer with suitable absorption onset with PCBM. We also describe proof-of-principle studies employing light trapping in hybrid tandem solar cells, suggesting that this device architecture has the potential to achieve efficiencies well above 12%.
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000173075 7001_ $$0P:(DE-Juel1)140348$$aGrootoonk, Björn$$b1$$ufzj
000173075 7001_ $$0P:(DE-HGF)0$$aNeubert, Sebastian$$b2
000173075 7001_ $$0P:(DE-HGF)0$$aRoland, Steffen$$b3
000173075 7001_ $$0P:(DE-Juel1)130306$$aWördenweber, Jan$$b4
000173075 7001_ $$0P:(DE-Juel1)130830$$aMeier, Matthias$$b5$$ufzj
000173075 7001_ $$0P:(DE-HGF)0$$aSchlatmann, Rutger$$b6
000173075 7001_ $$0P:(DE-Juel1)130242$$aGordijn, Aad$$b7$$ufzj
000173075 7001_ $$0P:(DE-HGF)0$$aNeher, Dieter$$b8
000173075 773__ $$0PERI:(DE-600)2012677-3$$a10.1016/j.solmat.2014.04.020$$gVol. 127, p. 157 - 162$$p157 - 162$$tSolar energy materials & solar cells$$v127$$x0927-0248$$y2014
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