Lead ii bromide

Indium nitrate hydrate (In(NO₃)₃·xH₂O, 99.999%) powder, N,N-dimethylacetamide (DMAC, 99.5%) were purchased from Sigma-Aldrich. 2-methoxyethanol (2-ME, 99.3%), acetylacetone (AcAc, 99%) and ammonium hydroxide (NH₃·H₂O, 28%) were obtained from Alfa Aesar. Formamidinium iodide (FAI, >98.0%), Methylammonium iodide (MAI, >99.0%), Cesium iodide (CsI, >99.0%), Lead (II) iodide (PbI₂, 99.99%), Methylammonium bromide (MABr, >99.0%) and Lead(II) bromide (PbBr₂, 99.99%) were purchased from Tokyo Chemical Industry Co. Ltd (TCI). Temozolomide (DMSO, 99%), N,N-Dimethylformamide (DMF, 98%) and chlorobenzene (CB, 99.8%) were purchased from J&K Scientific. Dichloromethane (DCM) was obtained from Innochem Science & Technology Co., Ltd. Colorless polyimide (CPI) powder was from Zhejiang OCAs New Materials Co. Ltd. Silicon wafer with 100 nm thick SiO₂ layer was obtained from Silicon Valley Microelectronics, Inc. Isopropyl alcohol (AR, 99.7%), acetone (AR, 99.5%) and hydrochloric acid (HCl; AR, 36–38%) were provided by China National Medicines Co. Ltd. (Shanghai, China). Poly(perfluoroalkyl vinyl ether) (CYTOP) was purchased from Asahi glass company (Japan) and consisted of CTL-809M (solute) and CT-Solv.180 (solvent). Polymethyl methacrylate (PMMA, 495 K A2) was purchased from Kayaku Advanced Materials.

Lead(II) iodide (PbI₂; 99.99%, trace metals basis) and lead(II) bromide (PbBr₂; >98.0%) were purchased from Tokyo Chemical Industry (TCI). Methylammonium chloride (MACl; 98%), cesium iodide (CsI; 99.9%, trace metals basis), anhydrous N, N-dimethylformamide (DMF; 99.8% v/v), anhydrous dimethyl sulfoxide (DMSO, 99% v/v), anhydrous chlorobenzene (99.8%), anhydrous ethyl acetate (99.8%), anhydrous ethanol (ethanol; 99.5% v/v), tin(II) chloride dihydrate (SnCl₂·2H₂O; 99.999%), hydrochloric acid (HCl; 37% v/v), 4-tert-butylpyridine (tBP), lithium bis-(trifluoromethanesulfonyl) imide (Li-TFSI), acetonitrile (anhydrous; 99.8%), copper(I) thiocyanate (CuSCN; 99%), and diethyl sulfide 98% were purchased from Sigma Aldrich. Propan-2-ol (AR grade) was purchased from RCI labscan. Formamidinium iodide (FAI; >99.99%), formamidinium bromide (FABr; >99.99%), and methylammonium bromide (MABr; >99.99%), and TEC15 FTO glass plate (2.2 mm thick) were purchased from Greatcell solar. TEC15 ITO glass (1.1 mm thick) was purchased from Luminescence Technology Corp. Tin(IV) oxide (15wt% in H₂O colloidal dispersion) and ferrocene (99%) were purchased from Alfa Aesar. 2,20,7,70-tetrakis[N,N-bis(4-methoxyphenyl)amino]-9,90-spirobifluorene (spiro-OMeTAD) was purchased from Feiming chemical. Alconox detergent powder was purchased from Alconox. Carbon paste (Jelcon CH-8) was purchased from Jujo chemical.