Eu3+, Tb3+ doping induced tunable luminescence of Cs2AgInCl6 double perovskite nanocrystals and its mechanism

Realizing efficient photoluminescence spectral modulation via Sb3+/Ln3+ co-doping in Cs2NaInCl6 double perovskites

“…Since Cs 2 NaIn 0.95 Sb 0.05 Cl 6 :Tb 3+ has lower energy transfer efficiency, we have fixed the doping amount of Tb 3+ at 1.5 mmol and prepared a series of Tb 3+ /Ho 3+ co-doped Cs 2 NaIn 0.95 Sb 0.05 Cl 6 crystals by changing the concentration of Ho 3+ ions. 29,46 As shown in Fig. 3(a), the PL spectra of Tb 3+ /Ho 3+ co-doped Cs 2 NaIn 0.95 Sb 0.05 Cl 6 show three distinct emission peaks at 440 nm, 547 nm, and 655 nm.…”

Tunable and Efficient Photoluminescence of Lanthanide-Doped Cs2NaScCl6 Double Perovskite Single Crystals toward Multifunctional Light-Emitting Diode Applications

“…Upon Eu 3+ ion doping, a strong orange-red emission was observed as shown in Figure 3e, the intrinsic emission peaks of Eu 3+ split into multiple subpeaks due to energy splitting. 35,36 The STE emissions also gradually decreased with the increase of the Eu 3+ ions concentration. Depending on the Eu 3+ ions content, the emission colors can be tuned from the blue to orange-red region (Figure S8b).…”

“…19 What is more, the absence of Na + ions contribution to the VBM can promote the coupling of Cl − ions with the doped Tb 3+ ions. 36 ELF analysis also revealed that Na + ions almost ionized completely and electrons are highly localized within [TbCl 6 ] 3− octahedron with incorporation of Tb 3+ ions into the lattices (Figure 4c,f).…”

All Inorganic Sb3+–Ln3+‐Codoped Cs2NaYCl6 for Highly Efficient Single‐Source White‐Light Emission and Ratiometric Optical Thermometer Applications

“…Accordingly, we first attempted to prepare a series of Tb 3+ ‐doped and 0.5%Sb 3+ ‐ x Tb 3+ ‐codoped Cs 2 NaYCl 6 SCs. [ 30–32 ] As shown in Figure S3 (Supporting Information), the sharp peaks located at 492, 543, 590, and 622 nm for Tb 3+ ‐doped Cs 2 NaYCl 6 SCs originate from the 5 D 4 ‐ 7 F 6,5,4,3 transitions of Tb 3+ . [ 19 ] Besides the sharp characteristic peaks of Tb 3+ , a broad band at 470 nm can be observed in the PL spectra of 0.5%Sb 3+ ‐ x Tb 3+ ‐codoped Cs 2 NaYCl 6 SCs, which is ascribed to the STE emission of Sb 3+ ( Figure a).…”