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K8Nb7P7O39: a new type of complicated incommensurately modulated structure and photoluminescence properties of Eu3+-doped solid solutions
Zhao, Dan1,2; Cui, Jun-Yan1; Han, Hong-Xian1; Li, Can1
Source PublicationJOURNAL OF MATERIALS CHEMISTRY C
2016
DOI10.1039/c6tc03022j
Volume4Issue:48Pages:11436-11448
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
WOS SubjectMaterials Science, Multidisciplinary ; Physics, Applied
WOS Research AreaMaterials Science ; Physics
WOS KeywordHIGH-TEMPERATURE SUPERCONDUCTOR ; BOND-VALENCE PARAMETERS ; CRYSTAL-STRUCTURE ; LUMINESCENCE PROPERTIES ; OPTICAL-PROPERTIES ; ENERGY-TRANSFER ; PHASE-TRANSITIONS ; BAND-STRUCTURE ; PHOSPHORS ; DIFFRACTION
AbstractA new type of potassium niobium phosphate, K8Nb7P7O39, has been prepared and its structure has been determined by single crystal X-ray diffraction analysis. The results show that it crystallizes in a novel (3 + 1)-dimensional incommensurately modulated structure with a triclinic superspace group P (1) over bar(alpha beta gamma)O and modulation vector q = -0.35281a* + 0.17630b* + 0.25807c*. The structure of K8Nb7P7O39 contains [K-3.66](infinity) N, [K-4.34](infinity) N and [Nb7P7O39](infinity) N layers alternately stacked along the c-axis. In this structure, seven not fully occupied K atoms (six of them come from the [K-3.66](infinity) N layer and the remaining one comes from the [K-4.34]infinity N layer) are thought to be the dominant factors in driving the structural modulation. The strong occupational modulation in combination with positional modulation of these seven K atoms can be described by crenel-type modulation functions. Furthermore, elemental composition, UV-Vis absorption spectrum, SEM morphology and photoluminescence properties induced by Eu3+-doping have been studied for K8Nb7P7O39. The excitation spectrum covers a wide range from 362 to 465 nm and it matches well with the emission of near-UV InGaN-based LED chips and bluish-green LED chips, indicating that K8Nb7P7O39: Eu3+ has potential as a red-emitting phosphor for LED applications.
Language英语
WOS IDWOS:000390787600010
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/151840
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Henan Polytech Univ, Coll Chem & Chem Engn, Jiaozuo 454000, Henan, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Dan,Cui, Jun-Yan,Han, Hong-Xian,et al. K8Nb7P7O39: a new type of complicated incommensurately modulated structure and photoluminescence properties of Eu3+-doped solid solutions[J]. JOURNAL OF MATERIALS CHEMISTRY C,2016,4(48):11436-11448.
APA Zhao, Dan,Cui, Jun-Yan,Han, Hong-Xian,&Li, Can.(2016).K8Nb7P7O39: a new type of complicated incommensurately modulated structure and photoluminescence properties of Eu3+-doped solid solutions.JOURNAL OF MATERIALS CHEMISTRY C,4(48),11436-11448.
MLA Zhao, Dan,et al."K8Nb7P7O39: a new type of complicated incommensurately modulated structure and photoluminescence properties of Eu3+-doped solid solutions".JOURNAL OF MATERIALS CHEMISTRY C 4.48(2016):11436-11448.
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