Highly efficient and stable red-emitting Sb-doped Indium-based perovskites via anionic component engineering

Boosting the broadband orange emission in organic–inorganic hybrid (DPG)3InBr6viaantimony doping

“…Therefore, we conclude that the HE emission peaks in (DPG) 3 InBr 6 come from organic cation and the peak located at 630 nm comes from STEs. 28 In addition, the PLE and PL spectra of DPGÁHBr and (DPG) 3 InBr 6 are overlapping in the range of 380 to 450 nm indicating the possible existence of some selfabsorption in DPGÁHBr and energy transfer in (DPG) 3 InBr 6 (Fig. S18, ESI †).…”

“…For pure (DPG) 3 InBr 6 , one can clearly see that there is a strong absorption band at 280 nm, which should be attributed to the spin-allowed transition out of the In–Br charge transfer band, while the shoulder peak in the range of 350–450 nm results from a parity-forbidden transition of local excitons. 28 With the increase of Sb doping concentration, the absorption band around the range of 250–300 nm has blue-shifted which is due to the d–sp hybridization of SbBr n , in which the d–d correlation shifts the valence band toward deeper energy levels. The absorption near band-edge is much enhanced by the Sb triplet state nearby indicating that Sb ion orbitals have a great contribution to absorption.…”

Highly emissive Sb3+-doped Rb2InCl5·H2O perovskites: cost-effective synthesis, luminescence, and its application

“…Among the 0D lead-free perovskites, eco-friendly and stable indium (In)-based perovskites are a promising candidate owing to their comparable performances to Pb-based perovskites in terms of excellent stability and high PLQY. [39][40][41] 0D In-based perovskites consisting of A 2 InX 5 ÁH 2 O (A = Cs, Rb; X = Cl, Br) have recently been explored. [42][43][44] Previous studies suggested that Sb 3+ -doped Cs 2 InX 5 ÁH 2 O (X = Cl, Br) possess admirable luminescence properties, making them promising materials for optoelectronic applications.…”