Abstract
A novel two-dimensional (2-D) bimetallic erbium-mercury compound {[Er(IA)(HIA)2(H2O)2]2(Hg3Br8)} n (nHgBr2)·2nNO3 (denoted as 1; HIA = isonicotinic acid; IA = isonicotinato anion) was prepared and characterized. Compound 1 crystallizes in the space group P2/c of the monoclinic system. By using solid state samples, it was observed that there are three upconversion photoluminescence emission bands at 400 nm, 475 nm and 526 nm, of which the band at 526 nm is the strongest. These bands can be attributed to the 4 F 9/2 → 4 I 15/2, 4 F 7/2 → 4 I 15/2 and 2 H 11/2 → 4 I 15/2 transitions of the Er3+ ions, respectively. An energy transfer mechanism of the photoluminescence emission bands was described with the energy state diagram of the Er3+ ion and the isonicotinic acid molecule. Compound 1 is characteristic of CIE (Commission Internationale de I'Éclairage) chromaticity coordinates of 0.1479 and 0.4321 in the green region. Compound 1 shows a wide optical band gap of 2.39 eV.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
