白色发光二极管
白色发光二极管的相关文献在1999年到2022年内共计177篇,主要集中在无线电电子学、电信技术、电工技术、化学工业
等领域,其中期刊论文97篇、会议论文3篇、专利文献584804篇;相关期刊60种,包括现代材料动态、光机电信息、电子与电脑等;
相关会议3种,包括2006年全国LED显示技术应用及产业发展研讨会、第七届全国LED产业研讨与学术会议、全国化合物半导体.微波器件和光电器件学术会议等;白色发光二极管的相关文献由238位作者贡献,包括C·塞恩特雷、E·沃莎姆、T·勒默希尔等。
白色发光二极管—发文量
专利文献>
论文:584804篇
占比:99.98%
总计:584904篇
白色发光二极管
-研究学者
- C·塞恩特雷
- E·沃莎姆
- T·勒默希尔
- 今成裕一郎
- 刘芳娇
- 咸宪柱
- 宫崎进
- 尹长安
- 户田健司
- 曹东铉
- 柳哲熙
- 熊新华
- 申在洪
- 申昌浩
- 金台联
- 金型析
- 杨文
- 林一志
- 汪秉龙
- 沈培宏
- 申德振
- 罗维鸿
- 萧松益
- 蒋大鹏
- 蔡绮睿
- 韩相赫
- 黄在燮
- Mok Thye Linn
- M·多诺弗里欧
- V.I.克霍洛迪洛夫
- V.N.奥洛维斯基
- XIE An
- Y.B.索科洛夫
- 三谷敦志
- 伍启元
- 刘家呈
- 刘星元
- 刘胜
- 刘自磊
- 叶其春
- 周铭俊
- 坂田信一
- 姜锡辰
- 戚务圣
- 方志烈
- 曹镭清
- 李凤
- 李孟维
- 李学勇
- 李秉杰
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张博涵;
田震;
李迪;
周鼎;
鲍鑫;
周正杰;
曲松楠
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摘要:
碳点作为一种新型的碳基荧光纳米粒子由于其可调谐发光、高光稳定性、生物相容性和低成本等独特优势而引起了很多关注.在过去的十几年中,碳点的制备和应用取得了巨大进展.然而,由于前体和合成方法的多样性,碳点的光致发光机理具有很大争议.现在人们普遍认为,碳点的光致发光源于电子在带隙的跃迁,并将荧光起源分别归结为碳核跃迁(π-π?)、表面态跃迁(n-π?)以及分子荧光团等.本文总结了碳点发光起源的几种可能和机制,分别讨论了通过调控碳点粒径以及进行表面工程处理的方法来实现碳纳米点带隙可调控的高效发光.介绍了通过表面工程、元素掺杂等手段提升碳纳米点光致发光量子产率及其在光电器件、信息存储、生物成像、光热治疗以及光动力治疗中的应用.
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袁曦;
马瑞新;
单美玲;
赵家龙;
李海波
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摘要:
Cu-doped quantum dots ( QDs) were used as color converting materials for preparing effi-cient white light-emitting diodes ( LEDs ) . The Cu-doped QDs synthesized by chemical method showed composition-tunable emission from green to deep red and large Stokes shifts. By using the combination of green light-emitting ZnInS:Cu QDs and red emitting ZnCdS:Cu QDs with blue GaN chips, a high color rendering white LED was fabricated. The resulting three-band RGB QD-white LED exhibits high performance with luminous efficacy of 71 lm/W, color rendering index up to 94, CIE-coordinates of (0. 352 4, 0. 365 1), and color temperature of 4 788 K. Based on the changes in the photoluminescence lifetimes of Cu-doped QDs, it is found that the energy transfer process from green ZnInS:Cu QDs to red ZnCdS:Cu QDs can be negligible, because the red QDs had no absorp-tion at green band. These results suggest that Cu-doped QDs are promising for solid state lighting.%利用胶体化学方法合成了发光波长可调的Cu掺杂量子点,其波长范围可从绿光到深红光连续调节.通过将绿光ZnInS:Cu和红光ZnCdS:Cu量子点与蓝光GaN芯片相结合,制备了高显色性的白光LED,其流明效率为71 lm·W-1,色温为4 788 K,显色指数高达94,CIE色坐标为(0. 352 4,0. 365 1). 通过测量Cu掺杂量子点的荧光衰减曲线,发现不存在从绿光ZnInS:Cu到红光ZnCdS:Cu量子点的能量传递过程,因为红光ZnCdS:Cu量子点在绿光波段没有吸收.实验结果表明,Cu掺杂量子点有望应用于固态照明领域.
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牛雪姣;
徐家跃;
张灿云;
童健
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摘要:
采用真空坩埚下降法生长了白色发光二极管(LED)用Ce∶YAG晶体,该生长方法所得晶体的Ce3+掺杂浓度较高,相对色温(3 751 K)低于传统方法所生长的Ce∶YAG晶体,其激发峰是位于460 nm左右的宽峰,与蓝光LED的发射波长相匹配,有望代替黄色荧光粉用于白光LED.随驱动电流增加,白光LED的发光效率逐渐降低,相对色温几乎不变.在100 mA时,白光LED显色指数达到最大值.
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刘学山
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摘要:
正纵观近几年各地中考物理试题,紧扣时代脉搏、捕捉社会热点的题目明显增多,体现了"从生活走向物理,从物理走向社会"的新课程理念。热点之一:节能能源与社会的发展息息相关,从一定意义上说,社会发展史就是一部能源开发利用史,但随着化石能源的急剧消耗,节约能源、开发新能源是摆在我们面前的紧迫任务。例1:图1甲为一个LED节能灯,它用高亮度白色发光二极管做光源。某校科技活动组用以下方法来研究家用电灯
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Ding-fei Zhang;
An Tang;
Liu Yang;
Zeng-tao Zhu
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摘要:
A red-emitting phosphor GdNbO4:Eu3+,Bi3+ was prepared by a high temperature solid-state reaction technique. The phosphor was characterized by X-ray diffraction (XRD), particle size analyzer and fluorescence spectrometer. The single phase of GdNbO4:Eu3+,Bi3+ was obtained at 1150°C and the average particle diameter was about 2.30 μm. Excitation and emission spectra reveal that the phosphor can be efficiently excited by ultraviolet (UV) light (394 nm) and emit the strong red light of 612 nm due to the Eu3+ transition of 5D0→7F2. The optimum content of Eu3+ doped in the phosphor GdNbO4:Eu3+ is 20mol%. The phosphor Gd0.80NbO4:0.20Eu3+,0.03Bi3+ shows much stronger photoluminescence intensity and better chromaticity coordinates (x=0.642, 0.352) than GdNbO4:Eu3+. It is confirmed that Gd0.80NbO4:0.20Eu3+,0.03Bi3+ is a potential candidate for near-UV chip-based white light emitting diodes.
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张其土;
张乐;
韩朋德;
陈雁;
杨浩;
王丽熙
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摘要:
本文综述了近年来白色发光二极管用光转换无机荧光粉的国内外研究进展.分别从能被蓝光LED芯片激发的黄色、绿色与红色荧光粉,和能被近紫外LED芯片激发的蓝色、绿色与红色荧光粉以及单一基质白光荧光粉进行了综述,对性能较好的荧光粉进行了重点推介;对相应的铝酸盐、硅酸盐、氮(氧)化物、钼酸盐等荧光粉的光致发光光谱及其调控原理进行了简要说明;同时指出了目前该领域中存在的问题,并对其发展趋势做了展望.%The research progress of light converting inorganic phosphors for white light-emitting diodes (WLEDs) in recent years is reviewed.The yellow, green and red phosphors excited by blue LED chip and the yellow, green, red, and single matrix white phosphors excited by near ultraviolet LED chip are overviewed respectively.The phosphors with preferable properties are mainly recommended.The photoluminescence spectra and their tunable mechanism of relevant aluminate, silicate, nitride (oxynitride) and molybdate are described briefly.The urgent problems to resolve in this field are pointed out and the development tendency is prospected.