日本語フィールド
著者：江良正直 読み: えらまさなお題名：Enhancement Effect of photoluminescence in PbBr-based perovskite by partial replacement with
divalent cations発表情報：10th International Conference on Molecular Electronics and Bioelectronicsキーワード：lead halide perovskite, emissive material,概要：抄録：Recently, lead halide-based perovskites, whose chemical formulae is APbX3 (A=CH3NH3+ or Cs+ and X: I-, Br-, Cl-), have attracted much attention as not only efficient solar cell material but also emissive device materials. In this work, we found the enhanced photoluminescence in PbBr-based perovskite by partial replacement of Pb2+ with divalent cation such as Sn2+ and Sr2+. This result is expected to contribute to the development of perovskites as emissive device materials.
Films of PbBr-based perovskites, CH3NH3Pb1-xMxBr3(x=0, 0.1, 0.2, 0.3, 0.5); M = Sn or Sr, were spin-coated on fused quartz substrates from the DMF solutions containing of CH3NH3Br, PbBr2 and MBr2.
Figs.1 and 2 shows the PL spectra of spin-coated films. Drastic changes in PL peak and shape of the spin-coated films by the partial replacement of divalent cations were not observed; PL peak was observed at 2.31 eV. By partial replacement of Pb2+ with Sn2+ or Sr2+, however, the PL intensity was enhanced compared with that of CH3NH3PbBr3.
We are now investigating the photoluminescence enhancement mechanism by the replacement of Pb cation with Sn or Sr cations.英語フィールド
Author：Masanao EraTitle：Enhancement Effect of photoluminescence in PbBr-based perovskite by partial replacement with
divalent cationsAnnouncement information:10th International Conference on Molecular Electronics and BioelectronicsKeyword：lead halide perovskite, emissive material,An abstract：Recently, lead halide-based perovskites, whose chemical formulae is APbX3 (A=CH3NH3+ or Cs+ and X: I-, Br-, Cl-), have attracted much attention as not only efficient solar cell material but also emissive device materials. In this work, we found the enhanced photoluminescence in PbBr-based perovskite by partial replacement of Pb2+ with divalent cation such as Sn2+ and Sr2+. This result is expected to contribute to the development of perovskites as emissive device materials.
Films of PbBr-based perovskites, CH3NH3Pb1-xMxBr3(x=0, 0.1, 0.2, 0.3, 0.5); M = Sn or Sr, were spin-coated on fused quartz substrates from the DMF solutions containing of CH3NH3Br, PbBr2 and MBr2.
Figs.1 and 2 shows the PL spectra of spin-coated films. Drastic changes in PL peak and shape of the spin-coated films by the partial replacement of divalent cations were not observed; PL peak was observed at 2.31 eV. By partial replacement of Pb2+ with Sn2+ or Sr2+, however, the PL intensity was enhanced compared with that of CH3NH3PbBr3.
We are now investigating the photoluminescence enhancement mechanism by the replacement of Pb cation with Sn or Sr cations.