Enhanced upconversion luminescence of BiOCl:Yb3+,Er3+ nanosheets via carbon dot modification and their optical temperature sensing

2021 ◽  
Author(s):  
Taizhong Xiao ◽  
Yongjin Li ◽  
Tianhui Wang ◽  
Youzhun Fan ◽  
Fangyu He ◽  
...  
Keyword(s):  
Upconversion Luminescence ◽  
Upconversion Emission ◽  
Temperature Sensing ◽  
Carbon Dot ◽  
Bismuth Oxychloride ◽  
New Strategy

A new strategy for enhancing upconversion emission via CD modification to improve photocarrier separation in bismuth oxychloride upconverting nanosheets.

Enhanced upconversion luminescence and modulated paramagnetic performance in NaGdF4:Yb, Er by Mg2+ tridoping

RSC Advances ◽  
2016 ◽  
Vol 6 (85) ◽  
pp. 81542-81551 ◽  
Author(s):  
Shuwen Zhao ◽  
Wei Liu ◽  
Xianya Xue ◽  
Yushi Yang ◽  
Zhiyong Zhao ◽  
...  
Keyword(s):  
Upconversion Luminescence ◽  
Upconversion Emission ◽  
New Strategy ◽  
First Time

In this work, a new strategy to enhance upconversion emission has been realized for the first time, based on β-NaGdF4:Yb3+, Er3+ nanocrystals (UCNC) using tridoping with magnesium (Mg2+) ions.

Highly efficient upconversion emission of Er3+ in δ-Sc4Zr3O12 and broad-range temperature sensing

2018 ◽  
Vol 20 (21) ◽  
pp. 14461-14468 ◽  
Author(s):  
Wen Liu ◽  
Guo-hui Pan ◽  
Zhendong Hao ◽  
Liangliang Zhang ◽  
Xia Zhang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Upconversion Luminescence ◽  
Upconversion Emission ◽  
Temperature Sensing ◽  
Highly Efficient ◽  
Bright Green

Bright green upconversion luminescence from Er3+ centers in δ-Sc4Zr3O12 and its crystal structure have been examined.

scholarly journals Nano-Crystallization of Ln-Fluoride Crystals in Glass-Ceramics via Inducing of Yb3+ for Efficient Near-Infrared Upconversion Luminescence of Tm3+

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1033
Author(s):  
Jianfeng Li ◽  
Yi Long ◽  
Qichao Zhao ◽  
Shupei Zheng ◽  
Zaijin Fang ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Near Infrared ◽  
Upconversion Luminescence ◽  
Glass Ceramics ◽  
Upconversion Emission ◽  
Ceramic Composites ◽  
Wide Range ◽  
Transmission Window ◽  
Optical Applications ◽  
Upconversion Emissions

Transparent glass-ceramic composites embedded with Ln-fluoride nanocrystals are prepared in this work to enhance the upconversion luminescence of Tm3+. The crystalline phases, microstructures, and photoluminescence properties of samples are carefully investigated. KYb3F10 nanocrystals are proved to controllably precipitate in the glass-ceramics via the inducing of Yb3+ when the doping concentration varies from 0.5 to 1.5 mol%. Pure near-infrared upconversion emissions are observed and the emission intensities are enhanced in the glass-ceramics as compared to in the precursor glass due to the incorporation of Tm3+ into the KYb3F10 crystal structures via substitutions for Yb3+. Furthermore, KYb2F7 crystals are also nano-crystallized in the glass-ceramics when the Yb3+ concentration exceeds 2.0 mol%. The upconversion emission intensity of Tm3+ is further enhanced by seven times as Tm3+ enters the lattice sites of pure KYb2F7 nanocrystals. The designed glass ceramics provide efficient gain materials for optical applications in the biological transmission window. Moreover, the controllable nano-crystallization strategy induced by Yb3+ opens a new way for engineering a wide range of functional nanomaterials with effective incorporation of Ln3+ ions into fluoride crystal structures.

Upconversion luminescence and ratiometric temperature sensing behavior of Er3+/Yb3+-codoped CaY2Ge3O10 germanate

2021 ◽  
Vol 31 (1) ◽  
pp. 113-115
Author(s):  
Olga A. Lipina ◽  
Ludmila L. Surat ◽  
Alexander Yu. Chufarov ◽  
Alexander P. Tyutyunnik ◽  
Vladimir G. Zubkov
Keyword(s):  
Upconversion Luminescence ◽  
Temperature Sensing

Simultaneous size adjustment and upconversion luminescence enhancement of β-NaLuF4:Yb3+/Er3+,Er3+/Tm3+ microcrystals by introducing Ca2+ for temperature sensing

CrystEngComm ◽  
2018 ◽  
Vol 20 (14) ◽  
pp. 2029-2035 ◽  
Author(s):  
Aihua Zhou ◽  
Feng Song ◽  
Yingdong Han ◽  
Feifei Song ◽  
Dandan Ju ◽  
...  
Keyword(s):  
Low Temperature ◽  
Hydrothermal Method ◽  
Upconversion Luminescence ◽  
Temperature Sensing ◽  
Facile Hydrothermal Method ◽  
Luminescence Enhancement ◽  
Size Adjustment

β-NaLuF4:Yb3+/Er3+ microcrystals have been obtained through a facile hydrothermal method at a relatively low temperature (180 °C) within only two hours.

Optical Temperature Sensing of Core-Shell Structured NaYF4:Yb3+, Er3+@NaYF4 Nanocrystals with Different Shell Thickness

2015 ◽  
Vol 738-739 ◽  
pp. 27-30
Author(s):  
Dong Dong Li ◽  
Qi Yue Shao ◽  
Yan Dong ◽  
Jian Qing Jiang
Keyword(s):  
Shell Thickness ◽  
Thermal Sensitivity ◽  
Upconversion Luminescence ◽  
Temperature Sensing ◽  
Upconversion Nanoparticles ◽  
Core Shell ◽  
Sensing Properties ◽  
The Core ◽  
Β Phase ◽  
Biomedical Fields

Hexagonal (β)-phase NaYF4:Yb3+, Er3+ upconversion nanoparticles (UCNPs) with and without an inert (undoped NaYF4) shell have been successfully synthesized and the effects of shell thickness on the upconversion luminescence (UCL) and temperature sensing properties were systematically investigated. It was found that the NaYF4 shell and its thickness do not affect the RHS values and thermal sensitivity, but can obviously improve the UCL intensity of NaYF4:Yb3+, Er3+ UCNPs. It implies that the core-shell structured NaYF4:Yb3+, Er3+@NaYF4 UCNPs with excellent UCL properties have great potential to be used as temperature sensing probes in biomedical fields, without considering the influences of the shell thickness on their temperature sensing properties.

Tuning the size and upconversion emission of NaYF4:Yb3+/Pr3+ nanoparticles through Yb3+ doping

RSC Advances ◽  
2014 ◽  
Vol 4 (99) ◽  
pp. 56302-56306 ◽  
Author(s):  
Shuwei Hao ◽  
Wei Shao ◽  
Hailong Qiu ◽  
Yunfei Shang ◽  
Rongwei Fan ◽  
...  
Keyword(s):  
Upconversion Luminescence ◽  
Upconversion Emission ◽  
Simple Method

We introduce a simple method to tune the resulting size as well as the upconversion luminescence of NaYF4:Yb3+/Pr3+ nanoparticles through varying the sensitizer ytterbium concentration.

MOLTEN SALT SYNTHESIS OF YF3:Yb3+/Ln3+(Ln = Er3+, Tm3+) MICROSHEETS WITH MULTICOLOR UPCONVERSION LUMINESCENCE

2013 ◽  
Vol 06 (06) ◽  
pp. 1350061 ◽  
Author(s):  
MINGYE DING ◽  
CHUNHUA LU ◽  
LINHAI CAO ◽  
YARU NI ◽  
ZHONGZI XU
Keyword(s):  
Molten Salt ◽  
Laser Diode ◽  
Upconversion Luminescence ◽  
Emission Spectra ◽  
Upconversion Emission ◽  
Molten Salt Synthesis ◽  
Molten Salt Method ◽  
Orthorhombic System ◽  
Co Doping ◽  
First Time

In this paper, highly crystalline YF 3: Yb 3+/ Ln 3+( Ln = Er 3+, Tm 3+) microsheets were successfully synthesized by a surfactant-free molten salt method for the first time. The results indicated that the as-obtained samples belonged to orthorhombic system and exhibited microsheets morphology with side lengths of 30 to 80 μm and wall thickness from 1 to 1.5 μm. By changing the dopant's species ( Ln 3+), multicolor (yellow and blue) upconversion emission can be observed in YF 3: Yb 3+/ Ln 3+ microsheets under 980 nm laser diode (LD) excitation. The upconversion mechanisms in co-doping YF 3 samples were analyzed in detail based on the emission spectra. Importantly, this approach not only proposes a new alternative in synthesizing such materials, but also opens the possibility to meet the increasing commercial demand.

Sign in / Sign up

Export Citation Format

Share Document