%0 Journal Article %1 doi:10.1021/acsenergylett.7b00278 %A Yu, Yue %A Wang, Changlei %A Grice, Corey R. %A Shrestha, Niraj %A Zhao, Dewei %A Liao, Weiqiang %A Guan, Lei %A Awni, Rasha A. %A Meng, Weiwei %A Cimaroli, Alexander J. %A Zhu, Kai %A Ellingson, Randy J. %A Yan, Yanfa %D 0 %J ACS Energy Letters %K annealing efficiency perovskite solvent %N 0 %P 1177-1182 %R 10.1021/acsenergylett.7b00278 %T Synergistic Effects of Lead Thiocyanate Additive and Solvent Annealing on the Performance of Wide-Bandgap Perovskite Solar Cells %U http://dx.doi.org/10.1021/acsenergylett.7b00278 %V 0 %X We show that the cooperation of lead thiocyanate additive and a solvent annealing process can effectively increase the grain size of mixed-cation lead mixed-halide perovskite thin films while avoiding excess lead iodide formation. As a result, the average grain size of the wide-bandgap mixed-cation lead perovskite thin films increases from 66 ± 24 to 1036 ± 111 nm, and the mean carrier lifetime shows a more than 3-fold increase, from 330 ns to over 1000 ns. Consequently, the average open-circuit voltage of wide-bandgap perovskite solar cells increases by 80 (70) mV, and the average power conversion efficiency (PCE) increases from 13.44 ± 0.48 (11.75 ± 0.34) to 17.68 ± 0.36 (15.58 ± 0.55)\% when measured under reverse (forward) voltage scans. The best-performing wide-bandgap perovskite solar cell, with a bandgap of 1.75 eV, achieves a stabilized PCE of 17.18\%.

@article{doi:10.1021/acsenergylett.7b00278, abstract = { We show that the cooperation of lead thiocyanate additive and a solvent annealing process can effectively increase the grain size of mixed-cation lead mixed-halide perovskite thin films while avoiding excess lead iodide formation. As a result, the average grain size of the wide-bandgap mixed-cation lead perovskite thin films increases from 66 ± 24 to 1036 ± 111 nm, and the mean carrier lifetime shows a more than 3-fold increase, from 330 ns to over 1000 ns. Consequently, the average open-circuit voltage of wide-bandgap perovskite solar cells increases by 80 (70) mV, and the average power conversion efficiency (PCE) increases from 13.44 ± 0.48 (11.75 ± 0.34) to 17.68 ± 0.36 (15.58 ± 0.55)\% when measured under reverse (forward) voltage scans. The best-performing wide-bandgap perovskite solar cell, with a bandgap of 1.75 eV, achieves a stabilized PCE of 17.18\%. }, added-at = {2017-05-02T10:23:41.000+0200}, author = {Yu, Yue and Wang, Changlei and Grice, Corey R. and Shrestha, Niraj and Zhao, Dewei and Liao, Weiqiang and Guan, Lei and Awni, Rasha A. and Meng, Weiwei and Cimaroli, Alexander J. and Zhu, Kai and Ellingson, Randy J. and Yan, Yanfa}, biburl = {https://www.bibsonomy.org/bibtex/2638f4e8e072fb3600e7400610ca1f5c8/fabianopkm}, doi = {10.1021/acsenergylett.7b00278}, eprint = {http://dx.doi.org/10.1021/acsenergylett.7b00278}, interhash = {b4818d4e1eaa839b27bcff1b3309ae9c}, intrahash = {638f4e8e072fb3600e7400610ca1f5c8}, journal = {ACS Energy Letters}, keywords = {annealing efficiency perovskite solvent}, number = 0, pages = {1177-1182}, timestamp = {2017-05-02T10:23:41.000+0200}, title = {Synergistic Effects of Lead Thiocyanate Additive and Solvent Annealing on the Performance of Wide-Bandgap Perovskite Solar Cells}, url = {http://dx.doi.org/10.1021/acsenergylett.7b00278}, volume = 0, year = 0 }