| Ca3La3(BO3)5中Eu3+的光致发光 |
| PHOTOLUMINESCENCE OF Eu3+ IN Ca3La3(BO3)5 |
|
| 摘要: 本文详细地研究了紫外光激发下,Ca3La3(BO3)5中Eu3+的发光光谱和激发光谱与组成、结构的关系.发现Eu3+在此基质中可能不止一个发光中心;Eu3+自身浓度猝灭的机理为电四极-四极相互作用. |
| 关键词: 光致发光 Ca3La3(BO3)5 铕 浓度猝灭 |
| 基金项目: 国家自然科学基金资助项目 |
| Abstract: Under the excitation of UV light,the luminescence of Eu3+ in Ca3La3(BO3)5 and the dependence of emission and excitation spectra on composition and structure have been studied.The charge-transfer excitation band of Eu3+ lies 200-290nm and has a maximum at 243nm.The emission spectrum of Eu3+ contains either strong emission of 5D0-7F2 and 5D0-7F4 transitions or rather strong emission of 5D0-7F1 transition.In Ca3La3(BO3)5 host,Eu3+ may occupy more than one site.The mechanism of concentration self-quenching of Eu3+ is a electric quadrupole-quadrupole interaction. |
| Keywords: photoluminescence Ca3La3(BO3)5 europium concentration quenching |
| 投稿时间：1991-12-12 |
| 摘要点击次数: 1582 |
| 全文下载次数: 1488 |
| 郭凤瑜,彭夷安.Ca3La3(BO3)5中Eu3+的光致发光[J].无机化学学报,1993,9(2):177-180. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
