Fig. 5 | Nature Communications

Fig. 5

From: Charge carrier localised in zero-dimensional (CH3NH3)3Bi2I9 clusters

Fig. 5The alternative text for this image may have been generated using AI.

Photoluminescence (PL) at difference excitation energies. a PL spectra of the powdered (CH3NH3)3Bi2I9 under different excitation energies. The blue and red arrows show the Stokes shift of 0.13 eV. The dashed line at the bottom is the PL measured on the substrate excited at 400 nm. b Energy diagram for the band gap of orientated film and the peak energy of PL at different angles. c Integration of PL intensities at different excitation energies. d Relative PL quantum yield (PLQY) for the (CH3NH3)3Bi2I9 powder and coating on quartz, respectively

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