Chemical tuning of dynamic cation off-centering in the cubic phases of hybrid tin and lead halide perovskites† †Electronic supplementary information (ESI) available: Details of the sample synthesis. LeBail fits of the X-ray diffraction data at 360 K. Fourier transform optimization of the X-ray total scattering data. Cubic fits of the XPDF data over 10 Å to 20 Å. Fits of the XPDF data over 2 Å to 5 Å against all models. Cubic and rhombohedral fits of APbBr3 at 300 K and 360 K. See DOI: 10.1039/c7sc01429e Click here for additional data file.
نویسندگان
چکیده
Materials Research Laboratory University of California, Santa Barbara, California 93106, USA, Materials Department University of California, Santa Barbara, California 93106, USA, Department of Chemistry, and Argonne-Northwestern Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208, USA, and Department of Chemistry and Biochemistry University of California, Santa Barbara, California 93106, USA
منابع مشابه
Chemical tuning of dynamic cation off-centering in the cubic phases of hybrid tin and lead halide perovskites.
Hybrid halide perovskites combine ease of preparation and relatively abundant constituent elements with fascinating photophysical properties. Descriptions of the chemical and structural drivers of the remarkable properties have often focused on the potential role of the dynamic order/disorder of the molecular A-site cations. We reveal here a key aspect of the inorganic framework that potentiall...
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