Enhancement of green emission by the codoping A~+ (A= Li, Na, K) in Ca_2BO_3Cl:Tb~(3+) phosphor

来源 :Chinese Physics B | 被引量 : 0次 | 上传用户:suhuisu
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Tb 3+ -doped Ca2BO3Cl compounds with different charge compensation approaches are synthesized by a high-temperature solid-state reaction method, and the luminescent properties and Commission Internationale de l’Eclairage (CIE) chromaticity coordinates are systematically characterized. Ca2BO3Cl:Tb 3+ can produce green emission under 376 nm radiation excitation. With codoped A + (A = Li, Na, K) as charge compensators, the relative emission intensities of Ca2BO3Cl:Tb 3+ are enhanced by about 1.61, 1.97, and 1.81 times compared with those of the direct charge balance, which is considered to be due to the effect of the difference in ion radius on the crystal field. The CIE chromaticity coordinates of Ca2BO3Cl:Tb 3+ , A + (A = Li, Na, K) are (0.335, 0.584), (0.335, 0.585), and (0.335, 0.585), corresponding to the hues of green. Therefore, A + (A = Li, Na, K) may be the optimal charge compensator for Ca2BO3Cl:Tb 3+ . Tb 3+ -doped Ca 2 BO 3 Cl compounds with different charge compensation approaches are synthesized by a high-temperature solid-state reaction method, and the luminescent properties and Commission Internationale de l’Eclairage (CIE) chromaticity coordinates are systematically characterized. Ca 2 BO 3 Cl: Tb 3+ with codoped A + (A = Li, Na, K) as charge compensators, the relative emission intensities of Ca2BO3Cl: Tb3 + are enhanced by about 1.61, 1.97, and 1.81 times compared with those of the direct charge balance, which is considered to be due due to the effect of the difference in ion radius on the crystal field. The CIE chromaticity coordinates of Ca2BO3Cl: Tb 3+, A + (A = Li, Na, K) are (0.335, 0.584), (0.335, 0.585), and (0.335, 0.585), corresponding to the hues of green. Thus, A + (A = Li, Na, K) may be the optimal charge compensator for Ca2BO3Cl: Tb3 +.
其他文献
麦可思研究院发布的《2013年中国大学生就业报告》显示,就业前景最不看好的高职高专专业包括:法律文秘、计算机科学与技术、国际金融、工商管理、法律事务、汉语言文学教育、
The selective oxidation of n-butane to maleic anhydride (MA) on a vanadium-phosphorus oxide (VPO) catalyst was studied using on-line gas-chromatography combined
为了解我市初中生血压情况,为早期预防高血压提供科学依据,笔者进行了调查。1对象与方法1997年10-12月,对福州市3所中学4047名12-15岁初中生,按《全国学生体质、健康状况调查研究
在研究水下地形的变迁规律时,通常采用对比的方法来比较不同时间或不同历史时期所测的水下地形图,然后利用多种水下断面图来表达水下地形的冲淤状况。本文则旨在利用所绘制
中国汽车工业如何适应市场经济体制李崇仁欣闻东风汽车联营公司将以十堰──襄樊──武汉,三点一线500公里汽车工业长廊为依托,建成年产汽车100万辆的汽车工业集团,从而想到我国汽车工
本文针对大庆油田某原油稳定装置的原油加热炉应用模糊控制原理设计了一套微机控制系统,实现了加热炉系统的数据采集和自动控制,解决了其出口原油温度和三管来油流量均衡的控制
长江流域的防洪规划是一非常复杂的问题,它牵涉的面很广,不可能在一篇文章中作较为全面的介绍,只就个人工作体会,谈一些人们最关心的问题。(一)对长江的洪水灾害特性的认识
敦煌願文是敦煌遺書中用於表達祈福禳災和頌贊等的各類文章,它們曾廣泛流行於南北朝至宋初的敦煌地區,材料珍貴,數量可觀,多與佛教有關,是我們研究漢語史的寶貴資料。敦煌願
库区移民问题,已成为影响我国水电建设的一个严重问题。如何尽可能地减少水库淹没损失,解决水库建设与土地资源利用的矛盾,提高电站经济效益,对加快水电建设步伐,有极为重要
We theoretically investigate the propagation of few-cycle laser pulses in resonant two-level dense media with a sub-wavelength structure, which is described by