Crystal system: unknown
| Interlayer Distance, Inorganic-to-Inorganic, Å |
|---|
Starting materials: 2TI, SnI2, HI, H3PO2, IPA
Product: Single crystals of 2D tin halide perovskite. Thin flakes were then exfoliated from the single crystals.
Description: Single crystals synthesized by slow cooling method. Growth solution prepared with 0.03mmol 2TI, 0.03mmol SnI2, 0.1mL HI, 0.05mL H3PO2, and 0.4mL IPA in a sealed glass vial and placed in a muffle furnace and heated until completely dissolved. Solution cooled to room temperature at a rate of 2°C/hour. Crystals were then dried and stored in a nitrogen glove box.
Method: Powder X-ray Diffraction
Description: Performed using Bruker D8 Advance, using copper target and steps of 0.02 degrees.
Comment: Temperature not confirmed in paper; room temperature seems likely.
Starting materials: 2TI, SnI2, HI, H3PO2, IPA
Product: Single crystals of 2D tin halide perovskites. Thin flakes were then exfoliated from the single crystals.
Description: Single crystals synthesized by slow cooling method. Growth solution prepared with 0.03mmol 2TI, 0.03mmol SnI2, 0.1mL HI, 0.05mL H3PO2, and 0.4mL IPA in a sealed glass vial and placed in a muffle furnace and heated until completely dissolved. Solution cooled to room temperature at a rate of 2°C/hour. Crystals were then dried and stored in a nitrogen glove box.
Method: Photoluminescence spectroscopy
Description: Temperature dependent PL measurements were conducted by combining a Linkam THMS600 stage with the Witec system. Air was purged from stage chamber with dry nitrogen to remove water and oxygen. Cooling rate set to 20 degrees Celsius/min. 50x objective lens used for signal collecting.
Crystal system: unknown
| Exciton binding energy, meV |
|---|
Starting materials: 2TI, SnI2, HI, H3PO2, IPA
Product: Single crystals of 2D tin halide perovskites. Thin flakes were then exfoliated from the single crystals.
Description: Single crystals synthesized by slow cooling method. Growth solution prepared with 0.03mmol 2TI, 0.03mmol SnI2, 0.1mL HI, 0.05mL H3PO2, and 0.4mL IPA in a sealed glass vial and placed in a muffle furnace and heated until completely dissolved. Solution cooled to room temperature at a rate of 2°C/hour. Crystals were then dried and stored in a nitrogen glove box.
Method: Arrhenius formula fitting
Description: Temperature dependent PL measurements were conducted by combining a Linkam THMS600 stage with the Witec system. Air was purged from stage chamber with dry nitrogen to remove water and oxygen. Cooling rate set to 20 degrees Celsius/min. 50x objective lens used for signal collecting. Exciton binding energies extracted from Arrhenius formula fitting from the integrated PL intensity.