Abstract
We report a facile synthetic method for high-aspect-ratio YF3:Yb3+/Er3+ nanocrystals by controlling the composition of the precursor and salts to manipulate the structures of YF3:Yb3+/Er3+ nanocrystals. A controlled aspect ratio is attained by tuning the molar ratio of NH4 +/RE3+ (NH4 + is the counterion released from the fluoride precursor (NH4F) and RE3+ indicates the total amount of Y, Yb, and Er) and the presence of specific inorganic salts. A low molar ratio of NH4 +/RE3+ induced the production of high-aspect-ratio YF3:Yb3+/Er3+ nanocrystals, while a high molar ratio of NH4 +/RE3+ induced the formation of irregular nanoplates. The selection of the inorganic salt as an additive is critical in controlling the aspect ratio and crystallinity of YF3:Yb3+/Er3+ nanocrystals. The cation showed limited control over the aspect ratio, but the anions, Cl- and Br-, induced the production of the highest aspect ratio for YF3:Yb3+/Er3+ nanocrystals. We found that the aspect ratio affected the luminescence properties of YF3:Yb3+/Er3+ nanocrystals. The green emission from nanorod structures changed to orange when the morphology is transformed to nanoplates.
| Original language | English |
|---|---|
| Pages (from-to) | 3055-3061 |
| Number of pages | 7 |
| Journal | Crystal Growth and Design |
| Volume | 17 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2017 Jun 7 |
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ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
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Aspect-Ratio Controlled Synthesis and Tunable Luminescence of YF3:Yb3+/Er3+ Upconversion Nanocrystals. / Murali, G.; Mishra, R. K.; Lee, Jae Myeong; Chae, Young Cheol; Kim, Jongwoo; Suh, Yung Doug; Lim, Dong-Kwon; Lee, Seung Hee.
In: Crystal Growth and Design, Vol. 17, No. 6, 07.06.2017, p. 3055-3061.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Aspect-Ratio Controlled Synthesis and Tunable Luminescence of YF3:Yb3+/Er3+ Upconversion Nanocrystals
AU - Murali, G.
AU - Mishra, R. K.
AU - Lee, Jae Myeong
AU - Chae, Young Cheol
AU - Kim, Jongwoo
AU - Suh, Yung Doug
AU - Lim, Dong-Kwon
AU - Lee, Seung Hee
PY - 2017/6/7
Y1 - 2017/6/7
N2 - We report a facile synthetic method for high-aspect-ratio YF3:Yb3+/Er3+ nanocrystals by controlling the composition of the precursor and salts to manipulate the structures of YF3:Yb3+/Er3+ nanocrystals. A controlled aspect ratio is attained by tuning the molar ratio of NH4 +/RE3+ (NH4 + is the counterion released from the fluoride precursor (NH4F) and RE3+ indicates the total amount of Y, Yb, and Er) and the presence of specific inorganic salts. A low molar ratio of NH4 +/RE3+ induced the production of high-aspect-ratio YF3:Yb3+/Er3+ nanocrystals, while a high molar ratio of NH4 +/RE3+ induced the formation of irregular nanoplates. The selection of the inorganic salt as an additive is critical in controlling the aspect ratio and crystallinity of YF3:Yb3+/Er3+ nanocrystals. The cation showed limited control over the aspect ratio, but the anions, Cl- and Br-, induced the production of the highest aspect ratio for YF3:Yb3+/Er3+ nanocrystals. We found that the aspect ratio affected the luminescence properties of YF3:Yb3+/Er3+ nanocrystals. The green emission from nanorod structures changed to orange when the morphology is transformed to nanoplates.
AB - We report a facile synthetic method for high-aspect-ratio YF3:Yb3+/Er3+ nanocrystals by controlling the composition of the precursor and salts to manipulate the structures of YF3:Yb3+/Er3+ nanocrystals. A controlled aspect ratio is attained by tuning the molar ratio of NH4 +/RE3+ (NH4 + is the counterion released from the fluoride precursor (NH4F) and RE3+ indicates the total amount of Y, Yb, and Er) and the presence of specific inorganic salts. A low molar ratio of NH4 +/RE3+ induced the production of high-aspect-ratio YF3:Yb3+/Er3+ nanocrystals, while a high molar ratio of NH4 +/RE3+ induced the formation of irregular nanoplates. The selection of the inorganic salt as an additive is critical in controlling the aspect ratio and crystallinity of YF3:Yb3+/Er3+ nanocrystals. The cation showed limited control over the aspect ratio, but the anions, Cl- and Br-, induced the production of the highest aspect ratio for YF3:Yb3+/Er3+ nanocrystals. We found that the aspect ratio affected the luminescence properties of YF3:Yb3+/Er3+ nanocrystals. The green emission from nanorod structures changed to orange when the morphology is transformed to nanoplates.
UR - http://www.scopus.com/inward/record.url?scp=85020255089&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85020255089&partnerID=8YFLogxK
U2 - 10.1021/acs.cgd.6b01803
DO - 10.1021/acs.cgd.6b01803
M3 - Article
AN - SCOPUS:85020255089
VL - 17
SP - 3055
EP - 3061
JO - Crystal Growth and Design
JF - Crystal Growth and Design
SN - 1528-7483
IS - 6
ER -