See all entries for this property (3 total)
Crystal system: hexagonal
| Photoluminescence peak position, Å |
|---|
Starting materials: Lead (II) acetate trihydrate (Pb(ac) 2·3H2O, 99%), fomamidine acetate salt (FAac, 99%), lead iodide (PbI2 , 99.999%), hydriodic acid (HI) (57% w/w aq. soln., stabilized with H3PO2), and gamma-butyrolactone (GBL, 99%) were purchased from Sigma-Aldrich
Product: FAPbI3 Single-crystal 5 mm yellow
Description: Synthesis of Seed Crystal of FAPbI3: Dissolve 2.5 g Pb(ac)2 ·3H2O in 15 mL of HI in a 100 mL flask in a 105 °C oil bath. Add 1.5 mL HI solution and 0.7 g of FAac to the mixed acid solution. Decrease the temperature of the mixed solution to 70 °C; maintain temperature for 6 h for the precipitation of seed crystal FAPbI3 (≈1 mm in size). Wash crystals with diethyl ether and dry in vacuum. Synthesis of Single Crystal FAPbI3: Dissolve 1.0 M solution containing PbI2 and FAI (1:1) was in GBL at 60 °C overnight. Filter the solution using PTFE filter with 0.2 µm pore size. Place seed crystals into this GBL solution in oil bath ≈100–105 °C for 3 h to grow larger crystals. Replace with fresh precursor to obtain an even larger crystal. Repeat this process three times to obtain a large single crystal FAPbI3 in alpha phase. The crystals turn to the yellow delta-phase in 10 days. Refer to Page 2257 Experimental section.
Method: Photoluminescence
Description: NKT SuperK Extreme laser with an excitation of 475 nm and New Focus Si fW detector. Refer to SI Figure S5.
See all entries for this property (3 total)
Crystal system: trigonal
| Photoluminescence peak position, nm |
|---|
Starting materials: Lead (II) acetate trihydrate (Pb(ac) 2·3H2O, 99%), fomamidine acetate salt (FAac, 99%), lead iodide (PbI2 , 99.999%), hydriodic acid (HI) (57% w/w aq. soln., stabilized with H3PO2), and gamma-butyrolactone (GBL, 99%) were purchased from Sigma-Aldrich
Product: FAPbI3 Single-crystal 5 mm black
Description: Synthesis of Seed Crystal of FAPbI3: Dissolve 2.5 g Pb(ac)2 ·3H2O in 15 mL of HI in a 100 mL flask in a 105 °C oil bath. Add 1.5 mL HI solution and 0.7 g of FAac to the mixed acid solution. Decrease the temperature of the mixed solution to 70 °C; maintain temperature for 6 h for the precipitation of seed crystal FAPbI3 (≈1 mm in size). Wash crystals with diethyl ether and dry in vacuum. Synthesis of Single Crystal FAPbI3: Dissolve 1.0 M solution containing PbI2 and FAI (1:1) was in GBL at 60 °C overnight. Filter the solution using PTFE filter with 0.2 µm pore size. Place seed crystals into this GBL solution in oil bath ≈100–105 °C for 3 h to grow larger crystals. Replace with fresh precursor to obtain an even larger crystal. Repeat this process three times to obtain a large single crystal FAPbI3 in alpha phase.
Method: Photoluminescence
Description: Horiba Jobin Yvon system. Refer to Page 2255 paragraph 1, Figure 2.
See all entries for this property (3 total)
Crystal system: unknown
| Photoluminescence peak position, nm |
|---|
Starting materials: Lead iodide (PbI2 , 99.999%) were purchased from Sigma-Aldrich, formamidinium iodide (FAI) was purchased from Dyesol Limited (Australia), dimethylformamide, ITO
Product: FAPbI3 Thin film on ITO
Description: Dissolve 450 mg of PbI2 in 1 mL dimethylformamide and spincoat on indium-tin-oxide (ITO) substrates at 2500 rpm for 30 s. Spincoat FAI (dissolved in 2-propanol) on top of dried PbI2 at room temperature at 3000 rpm for 30 s in dry air. Anneal films in air at 150 °C for desired time.
Method: Photoluminescence
Description: [ASSUMED] Horiba Jobin Yvon system. Refer to SI Figure S3.