TY - JOUR
T1 - Towards 15% energy conversion efficiency
T2 - A systematic study of the solution-processed organic tandem solar cells based on commercially available materials
AU - Li, Ning
AU - Baran, Derya
AU - Forberich, Karen
AU - Machui, Florian
AU - Ameri, Tayebeh
AU - Turbiez, Mathieu
AU - Carrasco-Orozco, Miguel
AU - Drees, Martin
AU - Facchetti, Antonio
AU - Krebs, Frederik C.
AU - Brabec, Christoph J.
PY - 2013/12
Y1 - 2013/12
N2 - Owing to the lack of scalable high performance donor materials, studies on mass-produced organic photovoltaic (OPV) devices lag far behind that on lab-scale devices. In this work, we choose 6 already commercially available conjugated polymers and systematically investigate their potential in organic tandem solar cells. All the devices are processed under environmental conditions using doctor-blading, which is highly compatible with mass-production coating technologies. Power conversion efficiencies (PCE) of 6-7% are obtained for OPV devices based on different active layers. Optical simulations based on experimental data are performed for all realized tandem solar cells. An efficiency potential of ∼10% is estimated for these compounds in combination with phenyl-C61-butyric acid methyl ester (PCBM) as an acceptor. In addition, we assume a hypothetical, optimized acceptor to understand the limitation of donors. It is suggested that a PCE of >14% is realistic for tandem solar cells based on these commercially available donor materials. Along with the demonstration of novel intermediate layers we believe that this systematic study provides valuable insight for those attempting to realize the high efficiency potential of tandem architectures.
AB - Owing to the lack of scalable high performance donor materials, studies on mass-produced organic photovoltaic (OPV) devices lag far behind that on lab-scale devices. In this work, we choose 6 already commercially available conjugated polymers and systematically investigate their potential in organic tandem solar cells. All the devices are processed under environmental conditions using doctor-blading, which is highly compatible with mass-production coating technologies. Power conversion efficiencies (PCE) of 6-7% are obtained for OPV devices based on different active layers. Optical simulations based on experimental data are performed for all realized tandem solar cells. An efficiency potential of ∼10% is estimated for these compounds in combination with phenyl-C61-butyric acid methyl ester (PCBM) as an acceptor. In addition, we assume a hypothetical, optimized acceptor to understand the limitation of donors. It is suggested that a PCE of >14% is realistic for tandem solar cells based on these commercially available donor materials. Along with the demonstration of novel intermediate layers we believe that this systematic study provides valuable insight for those attempting to realize the high efficiency potential of tandem architectures.
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U2 - 10.1039/c3ee42307g
DO - 10.1039/c3ee42307g
M3 - Article
AN - SCOPUS:84887973937
SN - 1754-5692
VL - 6
SP - 3407
EP - 3413
JO - Energy and Environmental Science
JF - Energy and Environmental Science
IS - 12
ER -