New iridium complex as additive to the spiro-OMeTAD in perovskite solar cells with enhanced stability | Zendy

Laura Badia | Zendy; E. Mas-Marzá | Zendy; Rafael S. Sánchez | Zendy; Eva M. Barea | Zendy; Juan Bisquert | Zendy; Iván MoraSeró | Zendy

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New iridium complex as additive to the spiro-OMeTAD in perovskite solar cells with enhanced stability

Author(s) -

Laura Badia,

E. Mas-Marzá,

Rafael S. Sánchez,

Eva M. Barea,

Juan Bisquert,

Iván MoraSeró

Publication year - 2014

Publication title -

apl materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.571

H-Index - 60

ISSN - 2166-532X

DOI - 10.1063/1.4890545

Subject(s) - iridium , perovskite (structure) , materials science , dielectric spectroscopy , metal , chemical engineering , solar cell , electrochemistry , chemistry , organic chemistry , catalysis , optoelectronics , metallurgy , electrode , engineering

A new iridium complex, IrCp*Cl(PyPyz)[TFSI], has been synthesized and used as additive for the hole transporter material, spiro-OMeTAD, in perovskite solar cells. The cells prepared with this Ir additive present higher efficiency than reference cells, and similar to cells prepared with Co additive. We have determined that the presence of metal complexes as additives decreases the recombination rate, as it has been observed by impedance spectroscopy. Very interestingly, while the efficiency after 3 months decreases by 22% and 70% for reference cell and cell with Co additive, respectively, the efficiency of devices containing the Ir additive is only decreased by a 4%

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