Poly tpd

Organic solvents, including anhydrous N,N-dimethylformide (DMF), chlorobenzene (CB), ethanol, and solid chemicals, including lead iodide (PbI₂), Poly-TPD, PVP (Mw = 29 k, 40 k, 360 k, 1300 k), potassium acetate (KAc), formamidinesulfinic acid (FSA), muconic acid, 1,3,5-tris(1-phenyl-1H-benzimidazol-2-yl)benzene (TPBi), LiF were purchased from Sigma Aldrich. Formamidinium iodide (FAI), butylammonium iodide (BA), phenethylammonium iodide (PEA) were purchased from Greatcell Solar. All the above chemicals were used as received. More details on the synthesis of bulky organic conjugated ligands^{25 (link)}, PPT’, PPT, TEA, 2 P, 2 T and 3 T can be found in the Supplementary Information.

Lead bromide (PbBr₂, >99.9%) and 2,8‐Bis(diphenyl‐phosphoryl)‐dibenzo[b,d]furan (PPF, ≥96%) were purchased from Tokyo Chemical Industry Co., Ltd. Cesium bromide (CsBr, >99.9%), phenethylammonium bromide (PEABr, ≥98%), 2,8‐Bis(diphenyl‐phosphoryl)‐dibenzo[b,d]thiophene (PPT, >96.5%), Poly[N,N″‐bis(4‐butylphenyl)‐N,N″‐bis(phenyl)‐benzidine] (Poly‐TPD), Poly(9‐vinylcarbazole) (PVK), lithium fluoride (LiF, >99.99%), and solvents including chlorobenzene (CB, 99.8%) and dimethyl sulfoxide (DMSO, ≥99.9%) were purchased from Sigma‐Aldrich and used without further purification. 2,2′,2″‐(1,3,5‐Benzinetriyl)‐tris(1‐phenyl‐1‐Hbenzimidazole) (TPBi) was purchased from Ultra Fine Chemical Technology Corp. 1,4,7,10,13,16‐Hexaoxacyclooctadecane (18‐crown‐6, 99%) was purchased from Alfa Aesar.