%0 Journal Article %1 ke2018myths %A Ke, Weijun %A Spanopoulos, Ioannis %A Stoumpos, Constantinos C. %A Kanatzidis, Mercouri G. %D 2018 %J Nature Communications %K halide hpbi3 perovskite %N 1 %P 4785-- %R 10.1038/s41467-018-07204-y %T Myths and reality of HPbI3 in halide perovskite solar cells %U https://doi.org/10.1038/s41467-018-07204-y %V 9 %X All-inorganic perovskites have a special place in halide perovskite family because of their potential for better stability. However, the representative cesium lead iodide (CsPbI3) is metastable and spontaneously converts to the non-perovskite structure at room temperature. Here, we demonstrate that what appears to be all-inorganic CsPbI3 stabilized in its perovskite form using the purported intermediate known as hydrogen lead iodide (HPbI3) is, in fact, the hybrid perovskite cesium dimethylammonium lead iodide (Cs1−xDMAxPbI3, x = 0.2 to 0.5). Thus, many of the reported all-inorganic perovskites are actually still hybrid organic-inorganic perovskites, as strongly evidenced by a wide battery of experimental techniques presented here. Solar cells based on the representative composition Cs0.7DMA0.3PbI3 can achieve an average power conversion efficiency of 9.27 ± 1.28% (max 12.62%). These results provide an alternative angle to look at previous results pertaining all-inorganic CsPbI3 while the DMA cation is now revealed as an alternative A site cation.

@article{ke2018myths, abstract = {All-inorganic perovskites have a special place in halide perovskite family because of their potential for better stability. However, the representative cesium lead iodide (CsPbI3) is metastable and spontaneously converts to the non-perovskite structure at room temperature. Here, we demonstrate that what appears to be all-inorganic CsPbI3 stabilized in its perovskite form using the purported intermediate known as hydrogen lead iodide (HPbI3) is, in fact, the hybrid perovskite cesium dimethylammonium lead iodide (Cs1−xDMAxPbI3, x = 0.2 to 0.5). Thus, many of the reported all-inorganic perovskites are actually still hybrid organic-inorganic perovskites, as strongly evidenced by a wide battery of experimental techniques presented here. Solar cells based on the representative composition Cs0.7DMA0.3PbI3 can achieve an average power conversion efficiency of 9.27 ± 1.28% (max 12.62%). These results provide an alternative angle to look at previous results pertaining all-inorganic CsPbI3 while the DMA cation is now revealed as an alternative A site cation.}, added-at = {2018-11-14T15:06:10.000+0100}, author = {Ke, Weijun and Spanopoulos, Ioannis and Stoumpos, Constantinos C. and Kanatzidis, Mercouri G.}, biburl = {https://www.bibsonomy.org/bibtex/2309211f977d8ac18422d576d61b4e06f/sere}, doi = {10.1038/s41467-018-07204-y}, interhash = {178d4e55f69cc08cc8c64c644dba86a0}, intrahash = {309211f977d8ac18422d576d61b4e06f}, issn = {20411723}, journal = {Nature Communications}, keywords = {halide hpbi3 perovskite}, number = 1, pages = {4785--}, refid = {Ke2018}, timestamp = {2018-11-14T15:06:10.000+0100}, title = {Myths and reality of HPbI3 in halide perovskite solar cells}, url = {https://doi.org/10.1038/s41467-018-07204-y}, volume = 9, year = 2018 }