%0 Journal Article %1 AENM:AENM201701543 %A Chen, Shi %A Hou, Yi %A Chen, Haiwei %A Tang, Xiaofeng %A Langner, Stefan %A Li, Ning %A Stubhan, Tobias %A Levchuk, Ievgen %A Gu, Ening %A Osvet, Andres %A Brabec, Christoph J. %D 2017 %J Advanced Energy Materials %K automation new_material perovskite stability %P n/a--n/a %R 10.1002/aenm.201701543 %T Exploring the Stability of Novel Wide Bandgap Perovskites by a Robot Based High Throughput Approach %U http://dx.doi.org/10.1002/aenm.201701543 %X Currently, lead-based perovskites with mixed multiple cations and hybrid halides are attracting intense research interests due to their promising stability and high efficiency. A tremendous amount of 3D and 2D perovskite compositions and configurations are causing a strong demand for high throughput synthesis and characterization. Furthermore, wide bandgap (≈1.75 eV) perovskites as promising top-cell materials for perovskite–silicon tandem configurations require the screening of different compositions to overcome photoinduced halide segregation and still yielding a high open-circuit voltage (Voc). Herein, a home-made high throughput robot setup is introduced performing automatic perovskite synthesis and characterization. Subsequently, four kinds of compositions (i.e., cation mixtures of Cs–methylammonium (MA), Cs– formamidinium (FA), MA–FA, and FA–MA) with an optical bandgap of ≈1.75 eV are identified as promising device candidates. For Cs–MA and Cs–FA films it is found that the Br–I phase segregation indeed can be overcome. Moreover, Cs–MA, MA–FA, and Cs–FA based devices exhibit an average Voc of 1.17, 1.17, 1.12 V, and their maximum values approached 1.18, 1.19, 1.14 V, respectively, which are among the highest Voc (≈1.2 V) values for ≈40% Br perovskite. These findings highlight that the high throughput approach can effectively and efficiently accelerate the invention of novel perovskites for advanced applications.

@article{AENM:AENM201701543, abstract = {Currently, lead-based perovskites with mixed multiple cations and hybrid halides are attracting intense research interests due to their promising stability and high efficiency. A tremendous amount of 3D and 2D perovskite compositions and configurations are causing a strong demand for high throughput synthesis and characterization. Furthermore, wide bandgap (≈1.75 eV) perovskites as promising top-cell materials for perovskite–silicon tandem configurations require the screening of different compositions to overcome photoinduced halide segregation and still yielding a high open-circuit voltage (Voc). Herein, a home-made high throughput robot setup is introduced performing automatic perovskite synthesis and characterization. Subsequently, four kinds of compositions (i.e., cation mixtures of Cs–methylammonium (MA), Cs– formamidinium (FA), MA–FA, and FA–MA) with an optical bandgap of ≈1.75 eV are identified as promising device candidates. For Cs–MA and Cs–FA films it is found that the Br–I phase segregation indeed can be overcome. Moreover, Cs–MA, MA–FA, and Cs–FA based devices exhibit an average Voc of 1.17, 1.17, 1.12 V, and their maximum values approached 1.18, 1.19, 1.14 V, respectively, which are among the highest Voc (≈1.2 V) values for ≈40% Br perovskite. These findings highlight that the high throughput approach can effectively and efficiently accelerate the invention of novel perovskites for advanced applications.}, added-at = {2017-11-14T15:52:53.000+0100}, author = {Chen, Shi and Hou, Yi and Chen, Haiwei and Tang, Xiaofeng and Langner, Stefan and Li, Ning and Stubhan, Tobias and Levchuk, Ievgen and Gu, Ening and Osvet, Andres and Brabec, Christoph J.}, biburl = {https://www.bibsonomy.org/bibtex/28fba7c64ddbe5514bc6f1a6fc74053d7/bretschneider_m}, doi = {10.1002/aenm.201701543}, interhash = {6e0923d796b238590190b40924a0815e}, intrahash = {8fba7c64ddbe5514bc6f1a6fc74053d7}, issn = {1614-6840}, journal = {Advanced Energy Materials}, keywords = {automation new_material perovskite stability}, pages = {n/a--n/a}, timestamp = {2017-11-14T15:52:53.000+0100}, title = {Exploring the Stability of Novel Wide Bandgap Perovskites by a Robot Based High Throughput Approach}, url = {http://dx.doi.org/10.1002/aenm.201701543}, year = 2017 }