Fig. 2: Thermal-induced phase transitions from α-, through β-, to G-ETP2SbCl5. | Light: Science & Applications

Fig. 2: Thermal-induced phase transitions from α-, through β-, to G-ETP2SbCl5.

From: Recyclable luminescent solar concentrator from lead-free perovskite derivative

Fig. 2

a XRD profiles of as-synthesized α-ETP2SbCl5 products after being pre-treated by different temperatures for 10 min. The insets are the luminescent photographs of the samples after various heating pre-treatments; b TGA and c DSC profiles of the as-synthesized α-ETP2SbCl5; d Crystal structure of β-ETP2SbCl5. The insets are two disordered pyramids with opposite orientations; e TRPL spectra of β-ETP2SbCl5 within 0–30 μs; f Three states of the material before (raw powder), during (melting liquid) and after (transparent glass) heating treatment; g Digital photographs of the G-ETP2SbCl5 shaped like pumpkin and model girl under indoor white light (left column) and UV excitation (right column). The scale bars represent 5 cm; Comparisons in (h) PL, i PLE spectra, j lifetime decay curves, and k fitting band gaps of α-, β- and G-ETP2SbCl5

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