TY - JOUR
T1 - Use of the Phen-NaDPO:Sn(SCN)
2
Blend as Electron Transport Layer Results to Consistent Efficiency Improvements in Organic and Hybrid Perovskite Solar Cells
AU - Seitkhan, Akmaral
AU - Neophytou, Marios
AU - Kirkus, Mindaugas
AU - Abou-Hamad, Edy
AU - Hedhili, Mohamed N.
AU - Yengel, Emre
AU - Firdaus, Yuliar
AU - Faber, Hendrik
AU - Lin, Yuanbao
AU - Tsetseris, Leonidas
AU - McCulloch, Iain
AU - Anthopoulos, Thomas D.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors acknowledge the King Abdullah University of Science and Technology (KAUST) for the financial support. L.T. acknowledges support for the computational time granted from GRNET in the National HPC facility–ARIS– under Project STEM-2.
PY - 2019/9/26
Y1 - 2019/9/26
N2 - A simple approach that enables a consistent enhancement of the electron extracting properties of the widely used small-molecule Phen-NaDPO and its application in organic solar cells (OSCs) is reported. It is shown that addition of minute amounts of the inorganic molecule Sn(SCN)2 into Phen-NaDPO improves both the electron transport and its film-forming properties. Use of Phen-NaDPO:Sn(SCN)2 blend as the electron transport layer (ETL) in binary PM6:IT-4F OSCs leads to a remarkable increase in the cells' power conversion efficiency (PCE) from 12.6% (Phen-NaDPO) to 13.5% (Phen-NaDPO:Sn(SCN)2). Combining the hybrid ETL with the best-in-class organic ternary PM6:Y6:PC70BM systems results to a similarly remarkable PCE increase from 14.2% (Phen-NaDPO) to 15.6% (Phen-NaDPO:Sn(SCN)2). The consistent PCE enhancement is attributed to reduced trap-assisted carrier recombination at the bulk-heterojunction/ETL interface due to the presence of new energy states formed upon chemical interaction of Phen-NaDPO with Sn(SCN)2. The versatility of this hybrid ETL is further demonstrated with its application in perovskite solar cells for which an increase in the PCE from 16.6% to 18.2% is also demonstrated.
AB - A simple approach that enables a consistent enhancement of the electron extracting properties of the widely used small-molecule Phen-NaDPO and its application in organic solar cells (OSCs) is reported. It is shown that addition of minute amounts of the inorganic molecule Sn(SCN)2 into Phen-NaDPO improves both the electron transport and its film-forming properties. Use of Phen-NaDPO:Sn(SCN)2 blend as the electron transport layer (ETL) in binary PM6:IT-4F OSCs leads to a remarkable increase in the cells' power conversion efficiency (PCE) from 12.6% (Phen-NaDPO) to 13.5% (Phen-NaDPO:Sn(SCN)2). Combining the hybrid ETL with the best-in-class organic ternary PM6:Y6:PC70BM systems results to a similarly remarkable PCE increase from 14.2% (Phen-NaDPO) to 15.6% (Phen-NaDPO:Sn(SCN)2). The consistent PCE enhancement is attributed to reduced trap-assisted carrier recombination at the bulk-heterojunction/ETL interface due to the presence of new energy states formed upon chemical interaction of Phen-NaDPO with Sn(SCN)2. The versatility of this hybrid ETL is further demonstrated with its application in perovskite solar cells for which an increase in the PCE from 16.6% to 18.2% is also demonstrated.
UR - http://hdl.handle.net/10754/658568
UR - https://onlinelibrary.wiley.com/doi/abs/10.1002/adfm.201905810
UR - http://www.scopus.com/inward/record.url?scp=85073990633&partnerID=8YFLogxK
U2 - 10.1002/adfm.201905810
DO - 10.1002/adfm.201905810
M3 - Article
SN - 1616-301X
VL - 29
SP - 1905810
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 49
ER -