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

Abstract

Organic-inorganic hybrid metal halides have been considered as potential candidates for solid-state lighting (SSL) and display technology due to their unique photophysical properties, facile synthesis and low costs. Among them,...

Sb3+-Doped Indium-Based Metal Halide (Gua)3InCl6 with Efficient Yellow Emission

“…35 The characteristic peaks of all other elements are slightly shifted toward higher binding energies after Sb 3+ doping, indicating the influence of Sb 3+ incorporation on the energy level structure of this metal halide material, similarly verifying the successful doping of Sb 3+ . 20 The morphology and elemental distribution of x%Sb 3+ : (Gua) 3 InCl 6 microcrystals were characterized by scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS). The SEM images and elemental distribution of 5% Sb 3+ :(Gua) 3 InCl 6 are shown in Figure 1d.…”

“…The peak at 531.56 eV belongs to O 1s because of the presence of Sb–O or In–O on the crystal surface through the hydrolysis of SbCl 3 and InCl 3 . The characteristic peaks of all other elements are slightly shifted toward higher binding energies after Sb 3+ doping, indicating the influence of Sb 3+ incorporation on the energy level structure of this metal halide material, similarly verifying the successful doping of Sb 3+ …”

“…On the other hand, the issue of low PLQY of In-based metal halides also urgently needs to be addressed, such as (Cs 1–x Rb x ) 3 InCl 6 (PLQY ∼ 1–2%), (C 7 H 8 N 3 ) 3 InCl 6 ·H 2 O (PLQY ∼ 5%), (H 3 AEP)­InCl 6 ·H 2 O (PLQY ∼ 13.44%), and (DPA) 3 InCl 6 (PLQY ∼ 34%) . Doping metal ions with ns 2 (Sb 3+ , Te 4+ , Bi 3+ , and so on) electronic configurations has been proven to be an effective strategy for achieving efficient luminescence and high stability. − Sb 3+ (5s 2 ) with unique singlet and triplet excitons is the most explored and effective choice to modulate photoluminescence (PL) and enhance emission intensity, and Sb 3+ -based or Sb 3+ -doped metal halides with strong electron–phonon coupling can form self-trapped excitons (STEs), resulting in efficient broadband emission. , On the one hand, Xia’s group synthesized three zero-dimensional (0D) metal halides with room-temperature broadband near-infrared (NIR) emission, which results from the highly localized STEs that are confined in unique edge-sharing [Sb 2 Cl 8 ] 2– dimers . On the other hand, doping of Sb 3+ endows different systems of metal halides with different luminescence properties.…”

Supramolecular-Interactions-Modulated Photoluminescence in Indium Bromide-Based Isomers

“…These In−Br bond distances are slightly shorter than those of the previous report. 19,42,43 The distances of In−N are 2.301(6) and 2.311(6) Å in 1 and 2.303(3) and 2.316(3) Å in 2, which are slightly shorter than those of [In 2 (phen) 3 Cl 6 ]•CH 3 CN. 44 It is notable that the density of 2 is slightly greater than that of 1.…”

Yellow-Orange Emission in Sb3+-Doped Hexakis(thiocarbamidium) Hexabromoindium(III) Tribromide

“…Similarly, in (DPG) 3 InBr 6 (DPG = 1,3-diphenylguanidine), the In−Br distances are 2.6774−2.6776 Å and the angles are 88.13− 91.86°. 32 The InBr 6 octahedron is usually more deformed. For example, in (PBA) 4 InBr 7 •H 2 O, 36 S5), which link TUH + cations to the InBr 6 3− polyhedral, forming a 3D network (Figure 1b).…”