Journal Article

PUBDB-2026-03124

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Inter- and Interconfigurational Luminescence of Pr$^{3+}$ in Ca$_6$Ba(PO$_4$)$_4$O

Dramicanin, M. (Corresponding author)Extern* ; ĐAČANIN FAR, L. ; MILENKOVIĆ, K.Extern* ; RISTIĆ, Z.Extern* ; ANTIĆ, Ž.Extern* ; PANKRATOV, V.Extern* ; KUZMAN, S. (Corresponding author)

2026
Acad. Bucureşti

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Please use a persistent id in citations: doi:10.59277/RomRepPhys.2026.78.204

Abstract: The photoluminescence properties of Pr3+-doped Ca6Ba(PO4)4O are reported and analyzed for the first time. The phosphors were synthesized via a conventional solid-state method with Pr3+ concentrations ranging from 0.5 to 2.0 mol% and Li+ co-doping for charge compensation. X-ray diffraction confirmed the formation of a single-phase monoclinic structure (C2/m) for all compositions. Photoluminescence studies showed both interconfigurational 4f5d → 4f2 and intraconfigurational 4f2 → 4f2 transitions of Pr3+, producing UV and visible emissions. The dominant red emission originates from the 1D2 → 3H4 transition, indicating efficient nonradiative relaxation from the 4f 5d states in the phosphate host. Maximum emission intensity was achieved at 0.5 mol% Pr3+, with concentration quenching observed at higher dopant levels. Time- resolved measurements revealed nanosecond 4f 5d lifetimes and microsecond 1D2 lifetimes.These findings enhance the understanding of luminescence mechanisms in phosphate-based materials and confirm Ca6Ba(PO4)4O as a stable and efficient host for Pr3+-activatedphosphors.

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Contributing Institute(s):

1. DOOR-User (DOOR)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. FS-Proposal: I-20250639 EC (I-20250639-EC) (I-20250639-EC)
3. NEPHEWS - NEutrons and PHotons Elevating Worldwide Science (NEPHEWS) (101131414) (101131414)

Experiment(s):

1. PETRA Beamline P66 (PETRA III)

Appears in the scientific report 2026

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Database coverage:
; Clarivate Analytics Master Journal List ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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