Engineering the lattice site occupancy of apatite-structure phosphors for effective broad-band emission through cation pairing
- Authors
- Unithrattil, Sanjith; Kim, Ha Jun; Gil, Kyeong Hun; Ngoc Hung Vu; Van Hien Hoang; Kim, Yoon Hwa; Arunkumar, Paulraj; Im, Won Bin
- Issue Date
- May-2017
- Publisher
- AMER CHEMICAL SOC
- Citation
- INORGANIC CHEMISTRY, v.56, no.10, pp.5696 - 5703
- Indexed
- SCIE
SCOPUS
- Journal Title
- INORGANIC CHEMISTRY
- Volume
- 56
- Number
- 10
- Start Page
- 5696
- End Page
- 5703
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/20322
- DOI
- 10.1021/acs.inorgchem.7b00310
- ISSN
- 0020-1669
- Abstract
- A series of britholite compounds were synthesized by simultaneous introduction of trivalent La3+ and Si4+ ions into an apatite structure. The variations in the average structure, electronic band structure, and microstructural properties resulting from the introduction of cation pairs were analyzed as a function of their concentration. The effects of the structural variance and microstructural properties on the broad-band-emitting activator ions were studied by introducing Eu2+ ions as activators. For the resulting compound, which had dual emission bands in the blue and yellow regions of the spectrum, the emission peak position And strength were dependent upon the concentration of La3+-Si4+ pairs. By engineering the relative sizes of the two possible activator sites in the structure, 4f and 6h, through the introduction of a combination of trivalent La3+ and a polyanion, the preferential site occupancy of the activator ions was favorably altered. Additionally, the activator ions responsible for the lower-Stokes-shifted blue component of the emission functioned as a sensitizer of the larger-Stokes-shifted yellow emitting activators, and predominantly yellow-emitting phosphors were achieved. The feasibility of developing a white light emitting Sad-state device using the developed phosphor was also demonstrated.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 신소재공학부 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/20322)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.