Two viologen-based photoluminescence compounds: excitation-wavelength-dependent and photoirradiation-time-dependent photoluminescence switches

CrystEngComm ◽  
2021 ◽  
Author(s):  
Qing Liu ◽  
Lu Liu ◽  
Cao-Ming Yu ◽  
Pei-Xin Li ◽  
Guo-Cong Guo
Keyword(s):  
Solid State ◽  
Potential Application ◽  
Time Dependent ◽  
Optical Data ◽  
Luminescence Properties ◽  
Excitation Wavelength ◽  
Data Recording ◽  
Solid State Materials

Solid-state materials with adjustable luminescence properties have always been a research hotspot due to their potential application in optical data recording, display and ink-free printing. The further research on the...

Synthesis and Photoluminescence Characteristics of CaIn2O4:Dy3+ Phosphors Co-Doped with Gd3+, Zn2+ or Al3+ Ions

2016 ◽  
Vol 16 (4) ◽  
pp. 3973-3976 ◽  
Author(s):  
Jing Gou ◽  
Jing Wang ◽  
Binxun Yu ◽  
Dongyang Zhang
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Potential Application ◽  
Luminescence Properties ◽  
White Led ◽  
Co Doping ◽  
White Region ◽  
Chromaticity Coordinates ◽  
Co Doped

Novel warm-white emitting phosphors CaIn2O4:Dy3+ co-doped with Gd3+, Zn2+, or Al3+ ions were prepared by solid state reaction. In this paper, a strategy of co-doping with different ions was used with the aim of affecting the luminescence properties of CaIn2O4:0.6%Dy3+ under NUV excitation. The luminescence intensities of CaIn2O4:0.6%Dy3+ were enhanced by 0.2% Gd3+ or 0.2% Zn2+ ions co-doping under 367 nm excitation, but lowered by co-doping with 0.2% Al3+ ions. Furthermore, the chromaticity coordinates of CaIn2O4:0.6%Dy3+ can be tuned from the cold-white region to warmwhite region with Gd3+ or Zn2+ ions co-doping. These findings show that CaIn2O4:0.6%Dy3+, 0.2% Gd3+, and CaIn2O4:0.6%Dy3+,0.2% Zn2+ have potential application value as new warm-white LED phosphors.

Luminescence Properties of Novel Red Phosphor NaSrPO4:Eu3+

2012 ◽  
Vol 502 ◽  
pp. 128-131 ◽  
Author(s):  
Jia Yue Sun ◽  
Xiang Yan Zhang ◽  
Ji Cheng Zhu ◽  
Yi Ning Sun ◽  
Hai Yan Du
Keyword(s):  
Solid State ◽  
White Light ◽  
Dipole Transition ◽  
Luminescence Properties ◽  
Excitation Wavelength ◽  
Conventional Solid State Reaction ◽  
Red Phosphor ◽  
Uv Led ◽  
Red Luminescence ◽  
Uv Excitation

A novel red-emitting NaSrPO4:Eu3+ phosphor was prepared by a conventional solid-state reaction. The luminescence properties and temperature dependence of 4:Eu3+ were investigated. The phosphor exhibited red luminescence under the near-UV excitation of 395 nm, corresponding to the 5F0→7L6 transition of Eu3+ ions, which matched well with the excitation wavelength of near-UV LED chips. The electronic transition due to 5D0→7F2 transition of Eu3+ ions is stronger than the magnetic dipole transition due to 5D0→7F1 of Eu3+ ions. Furthermore, Eu3+-doped NaSrPO4 phosphor shows higher thermally stable luminescence comparable tocommercially available Y3Al5O12:Ce3+ phosphor. All the investigated suggested that this newly developed phosphor could find applications in white light devise utilizing InGaN-based excitation in the near-UV chips.

Luminescence properties of M2MgSi2O7:Eu2+ (M=Ca, Sr) phosphors and their effects on yellow and blue LEDs for solid-state lighting

2007 ◽  
Vol 30 (4) ◽  
pp. 571-578 ◽  
Author(s):  
Mei Zhang ◽  
Jing Wang ◽  
Weijia Ding ◽  
Qiuhong Zhang ◽  
Qiang Su
Keyword(s):  
Solid State ◽  
Solid State Lighting ◽  
Luminescence Properties

Photoresponsive Frameworks: Energy Transfer in the Spotlight

2021 ◽  
Author(s):  
Corey R. Martin ◽  
Kyoung Chul Park ◽  
Ryan E. Corkill ◽  
Preecha Kittikhunnatham ◽  
Gabrielle A. Leith ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
Covalent Organic Frameworks ◽  
Photochromic Behavior ◽  
Solid State Materials

In this paper, spiropyran-containing metal- and covalent-organic frameworks (MOFs and COFs, respectively) are probed as platforms for fostering photochromic behavior in solid-state materials while simultaneously promoting directional energy transfer (ET)....

Rational strategies for proton-conductive metal–organic frameworks

2021 ◽  
Author(s):  
Dae-Woon Lim ◽  
Hiroshi Kitagawa
Keyword(s):  
Solid State ◽  
Potential Application ◽  
High Performance ◽  
Metal Organic Frameworks ◽  
Metal Organic ◽  
Solid State Electrolytes

Since the transition of energy platforms, the proton-conductive metal–organic frameworks (MOFs) exhibiting high performance have been extensively investigated with rational strategies for their potential application in solid-state electrolytes.

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