Investigation on the concentration quenching and energy transfer of red-light-emitting phosphor Y2MoO6:Eu3+

2014 ◽  
Vol 149 ◽  
pp. 150-154 ◽  
Author(s):  
Bing Han ◽  
Jie Zhang ◽  
Zhimeng Wang ◽  
Yuanyuan Liu ◽  
Hengzhen Shi
Keyword(s):  
Energy Transfer ◽  
Red Light ◽  
Concentration Quenching ◽  
Light Emitting

Photoluminescence and energy transfer behavior of narrow band red light emitting Li3Ba2Tb3(MoO4)8:Eu3+

2018 ◽  
Vol 47 (5) ◽  
pp. 1520-1529 ◽  
Author(s):  
David Böhnisch ◽  
Florian Baur ◽  
Thomas Jüstel
Keyword(s):  
Energy Transfer ◽  
Narrow Band ◽  
Red Light ◽  
Light Emitting ◽  
Transfer Behavior

The emission integral of efficient red emitting Li3Ba2Eu3(MoO4)8 was strongly increased by partly substituting Eu3+ with Tb3+.

Defects-Mediated Energy Transfer in Red-Light-Emitting Eu-Doped ZnO Nanowire Arrays

2011 ◽  
Vol 115 (46) ◽  
pp. 22729-22735 ◽  
Author(s):  
Dandan Wang ◽  
Guozhong Xing ◽  
Ming Gao ◽  
Lili Yang ◽  
Jinghai Yang ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Red Light ◽  
Nanowire Arrays ◽  
Zno Nanowire ◽  
Light Emitting ◽  
Zno Nanowire Arrays ◽  
Doped Zno

Carbazole functionalized new bipolar ligand for monochromatic red light-emitting europium(iii) complex: combined experimental and theoretical study

2017 ◽  
Vol 41 (8) ◽  
pp. 3112-3123 ◽  
Author(s):  
B. Rajamouli ◽  
C. S. Dwaraka Viswanath ◽  
S. Giri ◽  
C. K. Jayasankar ◽  
V. Sivakumar
Keyword(s):  
Energy Transfer ◽  
Theoretical Study ◽  
Red Light ◽  
Light Emitting ◽  
Color Coordinates

Complete energy transfer observed from carbazole functionalized bipolar ligand as well as β-diketonate to Eu(iii) ion and Eu(iii) complex shows efficient PLQE (41.4%) with appropriate CIE color coordinates (x = 0.64, y = 0.36).

Photoluminescence and Energy Transfer from Sm3+ to Eu3+ in Na3YSi2O7 Phosphor for Light-Emitting Diodes

2014 ◽  
Vol 597 ◽  
pp. 117-120 ◽  
Author(s):  
Jia Yue Sun ◽  
Dian Peng Cui ◽  
Qiu Mei Di ◽  
Qi Guang Xu ◽  
Liu Han
Keyword(s):  
Energy Transfer ◽  
Uv Light ◽  
Red Light ◽  
Emission Spectra ◽  
X Ray Diffraction ◽  
Solid State Reaction Technique ◽  
Light Emitting ◽  
X Ray ◽  
Effective Energy Transfer ◽  
Light Excitation

A series of Na3YSi2O7: Eu3+, Sm3+ samples have been synthesized via solid-state reaction technique. The phase structure and luminescence properties are characterized using powder X-ray diffraction, photoluminescence excitation and emission spectra. Effective energy transfer occurs from Sm3+ to Eu3+ and Sm3+/Eu3+-codoped Na3YSi2O7 shows more intense red light compared to that of Eu3+-doped sample under UV light excitation.

White Electroluminescence from a Single Fluorene-Based Copolymer

2010 ◽  
Vol 160-162 ◽  
pp. 732-736
Author(s):  
Qiong Hou ◽  
Jie Luo ◽  
Sui Lian Luo ◽  
Hong Zhu ◽  
Guang Shi
Keyword(s):  
Energy Transfer ◽  
Band Gap ◽  
White Light ◽  
Light Emission ◽  
Red Light ◽  
Relative Content ◽  
Television System ◽  
Low Band Gap ◽  
Light Emitting ◽  
White Electroluminescence

White light emitting polymers were synthesized through incorporating of low-band gap red light emitting 4,7-di(4-hexyl-thien-2-yl)-2,1,3-benzothiadiazole (DHTBT) moieties into the backbone of a blue-light-emitting poly(9,9-dioctylfluorene) (PFO). Incomplete energy transfer from the blue electroluminescent PFO backbone to the red light emitting unit occurred by carefully controlling the relative content of the low-band gap unit DHTBT in the resulting polymers. Pure white light electroluminescence from a single polymer has been obtained in a device with a configuration of ITO/PVK/polymer/Ba/Al.The highest external quantum efficiency is 1.04% at the luminance of 249 cd/m2 for the white emitting polymer with color coordinates (0.30, 0.35) very close to the CIE coordinates for National Television System Committee (NTSC) standard white-light emission (0.33,0.33).

scholarly journals Understanding the luminescent nature of organic radicals for efficient doublet emitters and pure-red light-emitting diodes

2020 ◽  
Vol 19 (11) ◽  
pp. 1224-1229 ◽  
Author(s):  
Alim Abdurahman ◽  
Timothy J. H. Hele ◽  
Qinying Gu ◽  
Jiangbin Zhang ◽  
Qiming Peng ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Red Light ◽  
Organic Radicals ◽  
Light Emitting

The study of intramolecular decay and intermolecular energy transfer for phosphorescent organic light-emitting devices

2021 ◽  
Vol 23 (12) ◽  
pp. 7495-7503
Author(s):  
Wanlin Cai ◽  
Kai Ren ◽  
Ancong Zhao ◽  
Xiulan Wu ◽  
Rongxing He ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Rational Design ◽  
Energy Transfer Efficiency ◽  
Transfer Efficiency ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Intermolecular Energy ◽  
Intermolecular Energy Transfer ◽  
Organic Light Emitting Devices

Compared to the PtOO7-based system, the greater EQE of the PtON7-based system is mainly governed by the stronger energy transfer efficiency (ηEET); thus, it is necessary to evaluate ηEET from hosts to guests for the rational design of OLEDs.

scholarly journals High-performance quasi-2D perovskite light-emitting diodes: from materials to devices

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Li Zhang ◽  
Changjiu Sun ◽  
Tingwei He ◽  
Yuanzhi Jiang ◽  
Junli Wei ◽  
...  
Keyword(s):  
Energy Transfer ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Structural Characteristics ◽  
Quantum Yields ◽  
Research Directions ◽  
Light Emitting ◽  
Perovskite Materials ◽  
Quantum Confinement Effects ◽  
Semiconducting Properties

AbstractQuasi-two-dimensional (quasi-2D) perovskites have attracted extraordinary attention due to their superior semiconducting properties and have emerged as one of the most promising materials for next-generation light-emitting diodes (LEDs). The outstanding optical properties originate from their structural characteristics. In particular, the inherent quantum-well structure endows them with a large exciton binding energy due to the strong dielectric- and quantum-confinement effects; the corresponding energy transfer among different n-value species thus results in high photoluminescence quantum yields (PLQYs), particularly at low excitation intensities. The review herein presents an overview of the inherent properties of quasi-2D perovskite materials, the corresponding energy transfer and spectral tunability methodologies for thin films, as well as their application in high-performance LEDs. We then summarize the challenges and potential research directions towards developing high-performance and stable quasi-2D PeLEDs. The review thus provides a systematic and timely summary for the community to deepen the understanding of quasi-2D perovskite materials and resulting LED devices.

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