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Can I read Evidence for polarization-induced phase transformations and degradation in CH3NH3PbI3 on EtoBox?
Evidence for polarization-induced phase transformations and degradation in CH3NH3PbI3 by Aleksei Yu. Grishko; Maria A. Komkova; Ekaterina I. Marchenko; Alexandra V. Chumakova; Alexey B. Tarasov; Eugene A. Goodilin; Andrei A. Eliseev is a Materials Science article available to read on EtoBox.
What is Evidence for polarization-induced phase transformations and degradation in CH3NH3PbI3 about?
In solar cells, hybrid halide perovskites operate under constant bias, thus their stability towards electric field-induced degradation is of key importance. Here we report on evidence of previously unidentified electric field-induced transitions and degradation path of CH 3 NH 3 PbI 3 (MAPbI 3 ) using elemental and phase mapping. Thin films of MAPbI 3 were deposited onto 1-2 μm-pitch interdigitated electrodes and subjected to direct current (DC)-polarization. The MAPbI 3 layer polarized with < 0.8 V/μm DC electric field undergoes pronounced ion redistribution to methylammonium-rich MAPbI 3−y (y < 0.6) and iodine-rich MA 1−x PbI 3 (x < 0.3) regions. Polarization-induced loss of both methylammonium and iodine provokes degradation of MAPbI 3 . Using nanofocus grazing-incidence wide-angle X-ray scattering (GIWAXS), we unambiguously showed that the bias voltage induces the transformation of β-MAPbI 3 to metastable δ-MAPbI 3 polymorph via alignment of polar organic cation with the electric field. This transformation is partially reversible upon field removal. However, once formed, δ-MAPbI 3 disrupts the morphology of pristine film and undergoes decomposition to β-MAPbI 3 (β-MAPI) and PbI
Who reads Evidence for polarization-induced phase transformations and degradation in CH3NH3PbI3?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Aleksei Yu. Grishko; Maria A. Komkova; Ekaterina I. Marchenko; Alexandra V. Chumakova; Alexey B. Tarasov; Eugene A. Goodilin; Andrei A. Eliseev
- Publisher
- Springer Science and Business Media LLC
- Published
- 2023
- Language
- EN
- Field
- Materials Science (Physical Sciences)