TY - JOUR
T1 - Balancing electrical and optical losses for efficient 4-terminal Si-perovskite solar cells with solution processed percolation electrodes
AU - Ramírez Quiroz, César Omar
AU - Shen, Yilei
AU - Salvador, Michael
AU - Forberich, Karen
AU - Schrenker, Nadine
AU - Spyropoulos, George D.
AU - Heumüller, Thomas
AU - Wilkinson, Benjamin
AU - Kirchartz, Thomas
AU - Spiecker, Erdmann
AU - Verlinden, Pierre J.
AU - Zhang, Xueling
AU - Green, Martin A.
AU - Ho-Baillie, Anita
AU - Brabec, Christoph J.
N1 - Erratum/Corrigendum exists for this article and can be found in Journal of Materials Chemistry A, 6 (21), p.10149, doi: 10.1039/C8TA90069H. Copyright the Publisher 2018. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.
PY - 2018/2/28
Y1 - 2018/2/28
N2 - The unprecedented rise in efficiency of perovskite-based photovoltaics has sparked interest in semi-transparent devices, particularly for tandem structures. Despite promising reports regarding efficiency and reduced parasitic absorption, many devices still rely on processes from the gas phase, compromising both applicability and cost factors. Here, we report all-solution perovskite solar cells with improved infrared transparency ideally suited as top-cells for efficient multi-junction device configurations. We demonstrate the functionality of copper(i) thiocyanate as antireflective layer and as selective contact between the transparent conductive oxide and the perovskite. This concept allows us to fabricate an opaque device with steady state efficiency as high as 20.1%. By employing silver nanowires with robust environmental stability as the bottom electrode, we demonstrate different regimes of device performance that can be described through a classical percolation model, leading to semi-transparent solar cells with efficiencies of up to 17.1%. In conjunction with the implementation of an infrared-tuned transparent conductive oxide contact deposited on UV-fused silica, we show a full device average transmittance surpassing 84% between 800 and 1100 nm (as opposed to 77% with PEDOT:PSS as the selective contact). Finally, we mechanically stacked optimized perovskite devices on top of high performing PERL and IBC silicon architectures. The measured imputed output efficiency of the 4-terminal perovskite-silicon solar cell was 26.7% and 25.2% for the PERL-perovskite and IBC-perovskite, respectively.
AB - The unprecedented rise in efficiency of perovskite-based photovoltaics has sparked interest in semi-transparent devices, particularly for tandem structures. Despite promising reports regarding efficiency and reduced parasitic absorption, many devices still rely on processes from the gas phase, compromising both applicability and cost factors. Here, we report all-solution perovskite solar cells with improved infrared transparency ideally suited as top-cells for efficient multi-junction device configurations. We demonstrate the functionality of copper(i) thiocyanate as antireflective layer and as selective contact between the transparent conductive oxide and the perovskite. This concept allows us to fabricate an opaque device with steady state efficiency as high as 20.1%. By employing silver nanowires with robust environmental stability as the bottom electrode, we demonstrate different regimes of device performance that can be described through a classical percolation model, leading to semi-transparent solar cells with efficiencies of up to 17.1%. In conjunction with the implementation of an infrared-tuned transparent conductive oxide contact deposited on UV-fused silica, we show a full device average transmittance surpassing 84% between 800 and 1100 nm (as opposed to 77% with PEDOT:PSS as the selective contact). Finally, we mechanically stacked optimized perovskite devices on top of high performing PERL and IBC silicon architectures. The measured imputed output efficiency of the 4-terminal perovskite-silicon solar cell was 26.7% and 25.2% for the PERL-perovskite and IBC-perovskite, respectively.
UR - http://www.scopus.com/inward/record.url?scp=85042433922&partnerID=8YFLogxK
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UR - http://doi.org/10.1039/c8ta90069h
U2 - 10.1039/c7ta10945h
DO - 10.1039/c7ta10945h
M3 - Article
AN - SCOPUS:85042433922
SN - 2050-7488
VL - 6
SP - 3583
EP - 3592
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
IS - 8
ER -