(a) Crystal structure 16 of one of the 2D IO-hybrid, CAPI (hydrogen's are omitted for clarity) (b) and (c) NH-I terminal halide configuration of DDPI (right triangle configuration) and C12PI (equilateral triangle configuration), respectively, 18 and (d) NH-I bridging halide configuration of CPEPI 35 (right triangle configuration).
(a) Thin film XRD patterns and (b) simulated powder XRD patterns from single crystal XRD data of synthesized IO-hybrids (where *, ▪, and ▲ represents (100), (001), and (002) diffraction peaks, respectively.
Typical TG (blue) and DTG (red) curves of one of the 2D IO-hybrid C12PI.
(a) TG and (b) DTG curves of synthesized 2-D IO-hybrids.
Absorption (black) and PL (red) spectra of the one of the 2-D layered IO-hybrid (C12PI) thin film.
(a) Absorption and PL spectra of various 2-D layered IO-hybrid thin films. The spectra are shifted along y-axis for clarity.
Variation of exciton PL peak energy vs (a) well (inorganic) width (b) barrier (organic) widths (c) barrier/well ratio and (d) well/barrier ratio of various 2-D layered IO-hybrids, (e) and (f) schematic representations of PbI layer arrangement in parent PbI2 and one of the IO-hybrids, (PAPI), respectively.
(a) Schematic crystal packing structures and the Pb-I-Pb bond angles of CAPI and PAPI (b) and (c) simulated band structure and DOS of CAPI and PAPI, respectively.
Plot of (a) exciton PL peak energy and (b) estimated bandgap energy vs Pb-I-Pb in-plane bond angle of various 2-D IO-hybrids. Dashed lines are guide to eye.
(a) Absorption spectra, (b) normalized PL spectra, and (c) plot of PL and absorption spectral peak maximum vs film thickness of CHPI thin films. (d) Absorption spectra, (e) normalized PL spectra, and (f) plot of PL and absorption spectral peak maximum vs film thickness of PAPI thin films.
(a) and (b) PL intensity mapping of CAPI (at 485 nm) and CHPI (at 520 nm) single crystals. (c) PL spectra of CAPI thin film and one edge of CAPI crystal (indicated by square in (a)), and (d) PL spectra of CHPI thin film and different edges of CHPI crystal (indicated by squares in (b)).
The empirical names and chemical formulae of the synthesized IO-hybrids.
Empirical names, d-spacing values, both from thin film XRD and single crystal XRD, Pb-I-Pb bond angles, halogen and triangle bonding configurations and decomposition temperatures of all fabricated IO-hybrids.
Empirical names, absorption and PL peak energies, optical band gaps, inorganic “well” widths, organic “barrier” widths, and Pb-I-Pb bond angles of all the fabricated IO-hybrids.
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