TY - JOUR
T1 - High-Performance Inverted Polymer Solar Cells
T2 - Study and Analysis of Different Cathode Buffer Layers
AU - Lastra, Gonzalo
AU - Balderrama, Victor S.
AU - Reséndiz, Luis
AU - Pallarès, Josep
AU - Garduño, Salvador I.
AU - Cabrera, Victor
AU - Marsal, Lluis F.
AU - Estrada, Magali
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2018/3
Y1 - 2018/3
N2 - The effect of different cathode buffer layers on the performance of inverted organic solar cells (OSCs) fabric-ated with {poly[[2,6'-4,8-di(5-ethylhexylthienyl)benzo[1,2-b;3,3-b]dithiophene][3-fluoro-2-[(2-ethylhexyl) carbonyl] thieno[3,4-b]thiophenediyl]] (PTB7-Th):[6,6]-phenyl-C71-butyric acid methyl} (PC70BM) as active blend layer is studied using device simulator Silvaco/ATLAS TCAD. The parameters used in the simulations were extracted in fabricated OSCs, using the metal-insulator-metal model, obtaining very good agreement between measured and simulated current density (JSC), open-circuit voltage (VOC), fill factor, and power conversion efficiency (PCE). The enhanced performance observed for devices where either 10 nm of poly[(9,9-bis(3-(N,N-dimethylamino)propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene) (PFN), 0.6 nm of lithium fluoride (LiF) layer, or the combination of these two materials, was very well reproduced by simulation. Results indicate that the described procedure can be used to predict the behavior of new buffer layers in OSCs. The PCEs values obtained by simulation were 10.90%, 10.45%, 10.38%, 9.03%, and 7.60% for OSCs with cathode buffer layer consisting of the stack PFN/LiF, PFN, LiF/PFN, LiF and without cathode buffer layer, respectively, which agree well with measured values.
AB - The effect of different cathode buffer layers on the performance of inverted organic solar cells (OSCs) fabric-ated with {poly[[2,6'-4,8-di(5-ethylhexylthienyl)benzo[1,2-b;3,3-b]dithiophene][3-fluoro-2-[(2-ethylhexyl) carbonyl] thieno[3,4-b]thiophenediyl]] (PTB7-Th):[6,6]-phenyl-C71-butyric acid methyl} (PC70BM) as active blend layer is studied using device simulator Silvaco/ATLAS TCAD. The parameters used in the simulations were extracted in fabricated OSCs, using the metal-insulator-metal model, obtaining very good agreement between measured and simulated current density (JSC), open-circuit voltage (VOC), fill factor, and power conversion efficiency (PCE). The enhanced performance observed for devices where either 10 nm of poly[(9,9-bis(3-(N,N-dimethylamino)propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene) (PFN), 0.6 nm of lithium fluoride (LiF) layer, or the combination of these two materials, was very well reproduced by simulation. Results indicate that the described procedure can be used to predict the behavior of new buffer layers in OSCs. The PCEs values obtained by simulation were 10.90%, 10.45%, 10.38%, 9.03%, and 7.60% for OSCs with cathode buffer layer consisting of the stack PFN/LiF, PFN, LiF/PFN, LiF and without cathode buffer layer, respectively, which agree well with measured values.
KW - Cathode buffer layers
KW - PTB7-Th:PC70BM blend
KW - numerical simulation
KW - solar cells
UR - http://www.scopus.com/inward/record.url?scp=85040032765&partnerID=8YFLogxK
U2 - 10.1109/JPHOTOV.2017.2782568
DO - 10.1109/JPHOTOV.2017.2782568
M3 - Artículo
SN - 2156-3381
VL - 8
SP - 505
EP - 511
JO - IEEE Journal of Photovoltaics
JF - IEEE Journal of Photovoltaics
IS - 2
ER -