Science Advances

Supplementary Materials

This PDF file includes:

  • Section S1. Optical constants of (C4H9NH3)2PbI4 thin films
  • Section S2. Calculating normalized intrinsic multipolar emission rates
  • Section S3. Polarization-dependent shoulder emission in related layered lead-halide perovskites
  • Section S4. Photodegradation effects on the multipolar emission energy
  • Section S5. Radiation patterns from oriented multipoles
  • Section S6. TRPL and pump power dependence of multipolar decomposition in thin films
  • Section S7. Temperature dependence of multipolar PL in 2D HOIPs
  • Section S8. Matrix elements of multipolar transitions
  • Fig. S1. Complex uniaxial refractive index of BA2PbI4.
  • Fig. S2. Impact of experimental geometry on measured PL.
  • Fig. S3. Multipolar emission in exfoliated single crystals of BA2MAn−1PbnI3n+1 with n = 1 to 2.
  • Fig. S4. Multipolar emission in butylammonium lead bromide.
  • Fig. S5. Polarization-dependent PL in various alkylammonium-PbI4 spin-cast thin films.
  • Fig. S6. Summarized analysis of exfoliated single crystals of BA2PbI4.
  • Fig. S7. Summarized analysis of exfoliated single crystals of OA2PbI4.
  • Fig. S8. Summarized analysis of exfoliated single crystals of DDA2PbI4.
  • Fig. S9. Illumination intensity- and environment-dependent evolution of EQ emission in thin films of BA2PbI4.
  • Fig. S10. BFP radiation patterns from oriented multipoles.
  • Fig. S11. BFP radiation patterns from IP EQs.
  • Fig. S12. TRPL and pump power dependence of multipolar decomposition in spin-cast thin films of BA2PbI4.
  • Fig. S13. Calculated band structure, character, and charge densities.
  • Fig. S14. Temperature-dependent PL of ED and MD emission features in 2D HOIPs.
  • References (6163)

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