Fig. 3: Photoluminescence mechanism of TPP3Cu2Br2. | Light: Science & Applications

Fig. 3: Photoluminescence mechanism of TPP3Cu2Br2.

From: Luminescence lifetime thermometers based on hybrid cuprous halides with exceptional water resistance and giant thermal expansion

Fig. 3

a Calculated band structure, b total and partial DOS of TPP3Cu2Br2 based on the DFT method. c Diagram of the partial charge density for the VBM and CBM for the excited state of TPP3Cu2Br2 crystals, wherein isosurfaces are electron cloud distributions. d Schematic mechanism of TPP3Cu2Br2. GS ground state; ES excited state; STE self-trapped exciton

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