%0 Journal Article %1 ADFM:ADFM201700920 %A Qiu, Weiming %A Ray, Aniruddha %A Jaysankar, Manoj %A Merckx, Tamara %A Bastos, Joao P. %A Cheyns, David %A Gehlhaar, Robert %A Poortmans, Jef %A Heremans, Paul %D 2017 %J Advanced Functional Materials %K lifetime morphology perovskite %P n/a--n/a %R 10.1002/adfm.201700920 %T An Interdiffusion Method for Highly Performing Cesium/Formamidinium Double Cation Perovskites %U http://dx.doi.org/10.1002/adfm.201700920 %X The fabrication of high-quality cesium (Cs)/formamidinium (FA) double-cation perovskite films through a two-step interdiffusion method is reported. CsxFA1-xPbI3-y(1-x)Bry(1-x) films with different compositions are achieved by controlling the amount of CsI and formamidinium bromide (FABr) in the respective precursor solutions. The effects of incorporating Cs+ and Br− on the properties of the resulting perovskite films and on the performance of the corresponding perovskite solar cells are systematically studied. Small area perovskite solar cells with a power conversion efficiency (PCE) of 19.3% and a perovskite module (4 cm2) with an aperture PCE of 16.4%, using the Cs/FA double cation perovskite made with 10 mol% CsI and 15 mol% FABr (Cs0.1FA0.9PbI2.865Br0.135) are achieved. The Cs/FA double cation perovskites show negligible degradation after annealing at 85 °C for 336 h, outperforming the perovskite materials containing methylammonium (MA).

@article{ADFM:ADFM201700920, abstract = {The fabrication of high-quality cesium (Cs)/formamidinium (FA) double-cation perovskite films through a two-step interdiffusion method is reported. CsxFA1-xPbI3-y(1-x)Bry(1-x) films with different compositions are achieved by controlling the amount of CsI and formamidinium bromide (FABr) in the respective precursor solutions. The effects of incorporating Cs+ and Br− on the properties of the resulting perovskite films and on the performance of the corresponding perovskite solar cells are systematically studied. Small area perovskite solar cells with a power conversion efficiency (PCE) of 19.3% and a perovskite module (4 cm2) with an aperture PCE of 16.4%, using the Cs/FA double cation perovskite made with 10 mol% CsI and 15 mol% FABr (Cs0.1FA0.9PbI2.865Br0.135) are achieved. The Cs/FA double cation perovskites show negligible degradation after annealing at 85 °C for 336 h, outperforming the perovskite materials containing methylammonium (MA).}, added-at = {2017-05-24T10:17:15.000+0200}, author = {Qiu, Weiming and Ray, Aniruddha and Jaysankar, Manoj and Merckx, Tamara and Bastos, Joao P. and Cheyns, David and Gehlhaar, Robert and Poortmans, Jef and Heremans, Paul}, biburl = {https://www.bibsonomy.org/bibtex/22f0b8538db246a811d26d8f3d8678892/cgoehler}, description = {interdiffusion / recipe for FA-based perovskite SCs}, doi = {10.1002/adfm.201700920}, interhash = {b11f99fe9d65728c7b94085e97df1f90}, intrahash = {2f0b8538db246a811d26d8f3d8678892}, issn = {1616-3028}, journal = {Advanced Functional Materials}, keywords = {lifetime morphology perovskite}, pages = {n/a--n/a}, timestamp = {2017-05-24T10:17:15.000+0200}, title = {An Interdiffusion Method for Highly Performing Cesium/Formamidinium Double Cation Perovskites}, url = {http://dx.doi.org/10.1002/adfm.201700920}, year = 2017 }