| 查看: 582 | 回复: 1 | ||
| 本帖产生 1 个 翻译EPI ，点击这里进行查看 | ||
[求助]
麻烦高手翻译这段英文至汉语，不要机器
|
||
| White light-emitting diodes (w-LEDs) lighting can offer many benefits, and nowadays phosphor-converted w-LEDs utilizing phosphors to convert the radiation of a near-UV or blue LED chip into white light are paid more attentions. Although yellow-emitting_Y3Al5O12:Ce31 based phosphors pumped by blue LEDs are commercial available, however, low color rendering index and high color temperature for the lack of sufficient red emission restrict its wide application As an improved way, three-band w-LEDs with excellent light quality were proposed by the combination of the blue-emitting GaN-based LED with green and red phosphors, or pumping tricolor phosphors with near-UV or violet LED. Alternatively, it is also an excellent strategy to develop a single-phase white-emitting phosphor, and the conventional single-phase white phosphors were designed with the codoped tricolor emitting activator ions and the energy transfer among them, such as Eu21-Mn21 system, Ce3+-Mn2+ system,Eu2+-Tb3+-Mn2+ system, Ce3+-Tb3+-Mn2+ system, and so on. However, the investigations on single-doped activator with full-color-emitting phosphors were rarely reported. Such a way can be principally realized by designing the activator ions entering different crystallographic sites and showing corresponding full-color emission in the single host system. Herein we reveal a new approach to realizing the color-tunable photoluminescence through spectral mixing in the composition-controlled solid-solution system, as reported in the present study of iso-structural clinopyroxene solid-solution phosphors (Na1-xCax)(Sc1-xMgx)Si2O6:Eu2+. |
回复此楼» 猜你喜欢
0703求调剂383分
已经有9人回复
-
求调剂
已经有8人回复
-
化学调剂求助
已经有7人回复
-
一志愿哈尔滨工业大学085600英一数二337分求调剂
已经有12人回复
-
085600，320分求调剂
已经有16人回复
-
一志愿211，化学学硕，310分，本科重点双非，求调剂
已经有12人回复
-
0703化学调剂325分
已经有10人回复
-
085600，321分求调剂
已经有12人回复
-
化学357分，考研调剂
已经有12人回复
-
一志愿南昌大学，085600，344分求调剂
已经有8人回复
reko34
木虫 (正式写手)
- 翻译EPI: 132
- 应助: 117 (高中生)
- 金币: 4794.2
- 散金: 22
- 红花: 12
- 帖子: 780
- 在线: 417.4小时
- 虫号: 3055206
- 注册: 2014-03-15
- 性别: GG
- 专业: 机械测试理论与技术
【答案】应助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
RXMCDM: 金币+1, 多谢应助！ 2014-07-07 16:41:05
miaobobo510: 金币+20, 翻译EPI+1, 太棒了 2014-07-17 15:29:34
RXMCDM: 金币+1, 多谢应助！ 2014-07-07 16:41:05
miaobobo510: 金币+20, 翻译EPI+1, 太棒了 2014-07-17 15:29:34
| 白色发光二级光（w-LEDs）照明有很多优点，如今利用磷将近紫外或蓝色LED芯片的辐射转化为白光的磷转化w-LEDs得到更多关注。尽管由蓝光LEDs驱动的、基于Y3Al5O12:Ce31磷的黄光照明已经用于商业用途，但低色彩渲染索引和因红光不足导致的高色温限制了其应用。作为一种改进方法，建议组合蓝色发光的基于GaN的LED和绿磷及红磷，或用近紫外或紫外LED驱动三色磷，形成具有高光质的三频带w-LEDs。作为另一种选择，开发单相白色发光磷也是个极好的策略，常规的单相白磷结合掺杂3色发光触发离子及其相互间传递的能量，包括Eu21-Mn21系统、Ce3+-Mn2+系统、Eu2+-Tb3+-Mn2+系统、Ce3+-Tb3+-Mn2+系统等。然而关于全色发光磷的单掺杂触发的研究少有报道。这种方式原理上可以通过在单一主系统中使触发离子进入不同晶位并显示对应的全色发光实现。这里我们展示一种通过混合物控制固溶系统中的光谱混合实现色彩可调光致发光的新方法，如均匀结构斜辉石固溶磷(Na1-xCax)(Sc1-xMgx)Si2O6:Eu2+的现有研究所报道的。 |
2楼2014-07-07 15:37:29
