Advanced red phosphors for white light-emitting diodes

2016 ◽  
Vol 4 (37) ◽  
pp. 8611-8623 ◽  
Author(s):  
Junhao Li ◽  
Jing Yan ◽  
Dawei Wen ◽  
Wasim Ullah Khan ◽  
Jianxin Shi ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Low Energy ◽  
Environmental Friendliness ◽  
Light Emitting ◽  
Red Phosphors ◽  
Low Energy Consumption ◽  
Long Lifetime ◽  
White Light Emitting Diodes

White light-emitting diodes (WLEDs) with high luminous brightness, low energy consumption, long lifetime and environmental friendliness can be applied in various fields. In order to improve the quality of white light, red phosphors are necessary.

Narrow-band red-emitting Mn4+-doped hexafluoride phosphors: synthesis, optoelectronic properties, and applications in white light-emitting diodes

2016 ◽  
Vol 4 (46) ◽  
pp. 10759-10775 ◽  
Author(s):  
Hoang-Duy Nguyen ◽  
Ru-Shi Liu
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Narrow Band ◽  
Low Energy ◽  
Light Emitting ◽  
Low Energy Consumption ◽  
Long Lifetime ◽  
White Light Emitting Diodes ◽  
New Generation ◽  
Blue Chip

White light-emitting diodes (LEDs), including a blue-chip and yellow-emitting phosphor, are regarded as the new-generation of lighting sources because of their low energy consumption, long lifetime, and environmentally friendliness.

A Simple, Efficient Synthetic Route to Sr2Si5N8:Eu2+-Based Red Phosphors for White Light-Emitting Diodes

2006 ◽  
Vol 18 (23) ◽  
pp. 5578-5583 ◽  
Author(s):  
Rong-Jun Xie ◽  
Naoto Hirosaki ◽  
Takayuki Suehiro ◽  
Fang-Fang Xu ◽  
Mamoru Mitomo
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Synthetic Route ◽  
Light Emitting ◽  
Red Phosphors ◽  
White Light Emitting Diodes

Co-precipitation Synthesis and Luminescence Properties of Na2TiF6∶Mn4+Red Phosphors for Warm White Light Emitting Diodes

2015 ◽  
Vol 36 (12) ◽  
pp. 1402-1408 ◽  
Author(s):  
罗 洋 LUO Yang ◽  
江建青 JIANG Jian-qing ◽  
侯得健 HOU De-jian ◽  
游维雄 YOU Wei-xiong ◽  
叶信宇 YE Xin-yu
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Luminescence Properties ◽  
Light Emitting ◽  
Red Phosphors ◽  
Warm White Light ◽  
Precipitation Synthesis ◽  
Co Precipitation ◽  
White Light Emitting Diodes

scholarly journals Green Light Exposure Improves Pain and Quality of Life in Fibromyalgia Patients: A Preliminary One-Way Crossover Clinical Trial

Pain Medicine ◽  
2020 ◽  
Author(s):  
Laurent Martin ◽  
Frank Porreca ◽  
Elizabeth I Mata ◽  
Michelle Salloum ◽  
Vasudha Goel ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Clinical Trial ◽  
White Light ◽  
Light Emitting Diodes ◽  
Green Light ◽  
Pain Clinic ◽  
Mcgill Pain Questionnaire ◽  
Light Emitting ◽  
White Light Emitting Diodes

Abstract Objective Fibromyalgia is a functional pain disorder in which patients suffer from widespread pain and poor quality of life. Fibromyalgia pain and its impact on quality of life are not effectively managed with current therapeutics. Previously, in a preclinical rat study, we demonstrated that exposure to green light-emitting diodes (GLED) for 8 hours/day for 5 days resulted in antinociception and reversal of thermal and mechanical hypersensitivity associated with models of injury-related pain. Given the safety of GLED and the ease of its use, our objective is to administer GLED as a potential therapy to patients with fibromyalgia. Design One-way crossover clinical trial. Setting United States. Method We enrolled 21 adult patients with fibromyalgia recruited from the University of Arizona chronic pain clinic who were initially exposed to white light-emitting diodes and then were crossed over to GLED for 1 to 2 hours daily for 10 weeks. Data were collected by using paper surveys. Results When patients were exposed to GLED, but not white light-emitting diodes, they reported a significant reduction in average pain intensity on the 10-point numeric pain scale. Secondary outcomes were assessed by using the EQ-5D-5L survey, Short-Form McGill Pain Questionnaire, and Fibromyalgia Impact Questionnaire and were also significantly improved in patients exposed to GLED. GLED therapy was not associated with any measured side effects in these patients. Conclusion Although the mechanism by which GLED elicits pain reduction is currently being studied, these results supporting its efficacy and safety merit a larger clinical trial.

Modification of the crystal structure of Sr2−xBaxSi(O,N)4: Eu2+ phosphors to improve their luminescence properties

CrystEngComm ◽  
2015 ◽  
Vol 17 (47) ◽  
pp. 9123-9134 ◽  
Author(s):  
Xiaojun Li ◽  
Youjie Hua ◽  
Hongping Ma ◽  
Degang Deng ◽  
Shiqing Xu
Keyword(s):  
Crystal Structure ◽  
White Light ◽  
Light Emitting Diodes ◽  
Luminescence Properties ◽  
Light Emitting ◽  
Red Phosphors ◽  
White Light Emitting Diodes

A series of Sr1.98−xBaxSi(O,N)4: 0.02Eu2+ (0 ≤ x ≤ 0.5) phosphors were synthesized. We anticipate that these materials can be used as green or red phosphors in white light emitting diodes.

Novel polygonal structure Mn4+ activated In3+-based Elpasolite-type hexafluorides red phosphor for warm white light-emitting diodes (WLEDs)

2019 ◽  
Vol 48 (4) ◽  
pp. 1376-1385 ◽  
Author(s):  
Feng Hong ◽  
Haiming Cheng ◽  
Chao Song ◽  
Guixia Liu ◽  
Wensheng Yu ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Synthetic Methods ◽  
Red Phosphor ◽  
Light Emitting ◽  
White Leds ◽  
Red Phosphors ◽  
Polygonal Structure ◽  
Warm White Light ◽  
White Light Emitting Diodes

Red phosphors (NH4)2NaInF6:Mn4+ with controllable morphology were synthesized via different synthetic methods, which can be fabricated for warm white LEDs.

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