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| EPFL scientists studied the minimum energy required to form two-dimensional perovskites from different isomers of the iodide PDEAI2 (phenylenediethylammonium). The isomers were designed for what the researchers call “tailored defect passivation”, meaning that their passivation effect on perovskites was very well characterized in advance. Fig. 1 a The structures of the PDEAI2 isomers. b J-V characteristics of the champion device with o-PDEAI2. c Photograph of the fabricated perovskite solar module. Credit: MK Nazeeruddin. |
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