%0 Journal Article %1 doi:10.1021/jacs.6b08337 %A Liao, Weiqiang %A Zhao, Dewei %A Yu, Yue %A Shrestha, Niraj %A Ghimire, Kiran %A Grice, Corey R. %A Wang, Changlei %A Xiao, Yuqing %A Cimaroli, Alexander J. %A Ellingson, Randy J. %A Podraza, Nikolas J. %A Zhu, Kai %A Xiong, Ren-Gen %A Yan, Yanfa %D 2016 %J Journal of the American Chemical Society %K perovskite solar-cell %N 38 %P 12360-12363 %R 10.1021/jacs.6b08337 %T Fabrication of Efficient Low-Bandgap Perovskite Solar Cells by Combining Formamidinium Tin Iodide with Methylammonium Lead Iodide %U http://dx.doi.org/10.1021/jacs.6b08337 %V 138 %X Mixed tin (Sn)–lead (Pb) perovskites with high Sn content exhibit low bandgaps suitable for fabricating the bottom cell of perovskite-based tandem solar cells. In this work, we report on the fabrication of efficient mixed Sn–Pb perovskite solar cells using precursors combining formamidinium tin iodide (FASnI3) and methylammonium lead iodide (MAPbI3). The best-performing cell fabricated using a (FASnI3)0.6(MAPbI3)0.4 absorber with an absorption edge of ∼1.2 eV achieved a power conversion efficiency (PCE) of 15.08 (15.00)\% with an open-circuit voltage of 0.795 (0.799) V, a short-circuit current density of 26.86(26.82) mA/cm2, and a fill factor of 70.6(70.0)\% when measured under forward (reverse) voltage scan. The average PCE of 50 cells we have fabricated is 14.39 ± 0.33\%, indicating good reproducibility.

@article{doi:10.1021/jacs.6b08337, abstract = { Mixed tin (Sn)–lead (Pb) perovskites with high Sn content exhibit low bandgaps suitable for fabricating the bottom cell of perovskite-based tandem solar cells. In this work, we report on the fabrication of efficient mixed Sn–Pb perovskite solar cells using precursors combining formamidinium tin iodide (FASnI3) and methylammonium lead iodide (MAPbI3). The best-performing cell fabricated using a (FASnI3)0.6(MAPbI3)0.4 absorber with an absorption edge of ∼1.2 eV achieved a power conversion efficiency (PCE) of 15.08 (15.00)\% with an open-circuit voltage of 0.795 (0.799) V, a short-circuit current density of 26.86(26.82) mA/cm2, and a fill factor of 70.6(70.0)\% when measured under forward (reverse) voltage scan. The average PCE of 50 cells we have fabricated is 14.39 ± 0.33\%, indicating good reproducibility. }, added-at = {2017-02-23T09:09:28.000+0100}, author = {Liao, Weiqiang and Zhao, Dewei and Yu, Yue and Shrestha, Niraj and Ghimire, Kiran and Grice, Corey R. and Wang, Changlei and Xiao, Yuqing and Cimaroli, Alexander J. and Ellingson, Randy J. and Podraza, Nikolas J. and Zhu, Kai and Xiong, Ren-Gen and Yan, Yanfa}, biburl = {https://www.bibsonomy.org/bibtex/26fc9d35f5b5b96682cadf9050ceebfc2/baumbach}, description = {Fabrication of Efficient Low-Bandgap Perovskite Solar Cells by Combining Formamidinium Tin Iodide with Methylammonium Lead Iodide - Journal of the American Chemical Society (ACS Publications)}, doi = {10.1021/jacs.6b08337}, eprint = {http://dx.doi.org/10.1021/jacs.6b08337}, interhash = {fc68991670e77053b80a42bfbfed9da1}, intrahash = {6fc9d35f5b5b96682cadf9050ceebfc2}, journal = {Journal of the American Chemical Society}, keywords = {perovskite solar-cell}, note = {PMID: 27622903}, number = 38, pages = {12360-12363}, timestamp = {2017-02-23T09:09:28.000+0100}, title = {Fabrication of Efficient Low-Bandgap Perovskite Solar Cells by Combining Formamidinium Tin Iodide with Methylammonium Lead Iodide}, url = {http://dx.doi.org/10.1021/jacs.6b08337}, volume = 138, year = 2016 }