See all entries for this property (2 total)
Crystal system: orthorhombic
| a: | 9.0894 (±4e-06) Å |
| b: | 39.262 (±2e-05) Å |
| c: | 8.9518 (±6e-06) Å |
| α: | 90 (±0)° |
| β: | 90 (±0)° |
| γ: | 90 (±0)° |
Starting materials: PbO (99.9%), guanidinium chloride (99%), hydroiodic acid (HI, 57 wt % in H2O, distilled, stabilized, 99.95%), butylamine, hypophosphorous acid solution (H3PO2, 50 wt % in H2O)
Product: red plate-shaped crystals
Description: First, PbO (223 mg, 1 mmol) and GA chloride (47.8 mg, 0.5 mmol) were added to 1.5 mL of concentrated HI solution. These substances were dissolved under constant stirring and heating. Then, BA (49.6 μL, 0.5 mmol) was added to 0.25 mL of concentrated aqueous H3PO2 in a separate vial. This solution was stirred and was soon added to the initial solution. The temperature was lowered to 125º C until crystals began to form. The temperature was lowered again to 80ºC, the hot plate was turned off after 60 minutes, and after 30 minutes thereafter, the crystals were collected.
Method: Powder X-ray diffraction
Description: A Rigaku Miniflex600 powder X-ray diffractometer (Cu Kα graphite, λ = 1.5406 Å) was used. Operating settings included 40 kV/15 mA with Kβ foil filter.
See all entries for this property (5 total)
Crystal system: orthorhombic
| Band gap (fundamental), eV |
|---|
Code: VASP
Level of theory: DFT
Exchange-correlation functional: PBE+SOC
K-point grid: 4x2x2 k-grid (primitive cells) and 4x1x1 for inorganic 2D model compounds
Basis set definition: PAW
Comment: Plane-wave basis set with energy cut-off of 500 eV
Starting materials: PbO (99.9%), guanidinium chloride (99%), hydroiodic acid (HI, 57 wt % in H2O, distilled, stabilized, 99.95%), butylamine, hypophosphorous acid solution (H3PO2, 50 wt % in H2O)
Product: red plate-shaped crystals
Description: First, PbO (223 mg, 1 mmol) and GA chloride (47.8 mg, 0.5 mmol) were added to 1.5 mL of concentrated HI solution. These substances were dissolved under constant stirring and heating. Then, BA (49.6 μL, 0.5 mmol) was added to 0.25 mL of concentrated aqueous H3PO2 in a separate vial. This solution was stirred and was soon added to the initial solution. The temperature was lowered to 125º C until crystals began to form. The temperature was lowered again to 80ºC, the hot plate was turned off after 60 minutes, and after 30 minutes thereafter, the crystals were collected.
Method: UV-vis absorption
Description: A Shimadzu UV-3600 UV-vis NIR spectrometer was used. BaSO4 was used as a reference of 100% reflectance for all measurements.
Crystal system: orthorhombic
| Photoluminescence peak position, eV |
|---|
Starting materials: PbO (99.9%), guanidinium chloride (99%), hydroiodic acid (HI, 57 wt % in H2O, distilled, stabilized, 99.95%), butylamine, hypophosphorous acid solution (H3PO2, 50 wt % in H2O)
Product: red plate-shaped crystals
Description: First, PbO (223 mg, 1 mmol) and GA chloride (47.8 mg, 0.5 mmol) were added to 1.5 mL of concentrated HI solution. These substances were dissolved under constant stirring and heating. Then, BA (49.6 μL, 0.5 mmol) was added to 0.25 mL of concentrated aqueous H3PO2 in a separate vial. This solution was stirred and was soon added to the initial solution. The temperature was lowered to 125º C until crystals began to form. The temperature was lowered again to 80ºC, the hot plate was turned off after 60 minutes, and after 30 minutes thereafter, the crystals were collected.
Method: Photoluminescence microscopy
Description: A Horiba LabRAM HR Evolution confocal Raman microscope was used with a 473 nm laser to excite samples at 50x magnification.