Abstract
The narrow-band green-emitting phosphor Ba2LiSi7AlN12:Eu2+ was discovered by analyzing a single particle in a powder mixture, which we call the single particle diagnosis approach. Single crystal X-ray diffraction analysis of the particle revealed that Ba2LiSi7AlN12:Eu2+ crystallizes in the Pnnm space group (No. 58) with a = 14.0941 A, b = 4.8924 A, c = 8.0645 A, and Z = 2. The crystal structure is composed of a corner-sharing (Si,Al)N4 corrugated layer and edge-sharing (Si,Al)N4 and LiN4 tetrahedra. Ba(Eu) occupies the one-dimensional channel in a zigzag manner. The luminescence properties were also measured using a single crystalline particle. Ba2LiSi7AlN12:Eu2+ shows a green luminescence peak at approximately 515 nm with a narrow full-width at half-maximum of 61 nm. It shows high quantum efficiency of 79% with 405 nm excitation and a small decrease of luminescence intensity even at 300 °C.
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.
