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| 利用亮度波形证明固态阴极射线发光 | |
| 引用本文： | 刘明,陈晓红,徐征,滕枫,衣立新,高德文,郭立群.利用亮度波形证明固态阴极射线发光[J].光谱学与光谱分析,2005,25(10):1556-1559. |
| 作者姓名： | 刘明 陈晓红 徐征 滕枫 衣立新 高德文 郭立群 |
| 作者单位： | 1. 北京交通大学光电子技术研究所,北京,100044;北京石油化工学院,北京,102617 2. 中国科学院半导体研究所,北京,100083 3. 北京交通大学光电子技术研究所,北京,100044;天津大学博士后流动站,天津经济技术开发区博士后工作站天津中环三津有限公司分站,天津,300457 4. 北京交通大学光电子技术研究所,北京,100044 5. 北京石油化工学院,北京,102617 |
| 基金项目： | 国家自然科学基金（90301004）,北京自然科学基金（2032015）,博士后基金和北京交通大学攀登基金资助项目 |
| 摘 要： | 制备了3种结构的器件：A：ITO／SiO2／Alq3／Al，B：ITO／Alq3／SiO2／Al，C：ITO／SiO2／Alq3／SiO2／Al。对于器件A和B，在正向偏压（ITO接正极）下才能观察到发光；而对于器件C，在正向和反向偏压下都可以观察到发光。随着电压升高，器件B和C产生的蓝色发光相对绿光逐渐增强。这主要是由于SiO2中的加速电子碰撞激发Alq3发光层产生热电子，并与空穴形成电子空穴对，复合产生蓝光；而对于器件A，在反向偏压下被热电子碰撞激发出的空穴与正向偏压下从Al电极进入的电子复合形成激子，产生绿色发光。这些结构的器件发光不但可来源于电子与积累的空穴复合，而且也来自固态阴极射线发光。 |
| 关 键 词： | 固态阴极射线发光 热电子 电子空穴对 有机无机异质结 八羟基喹啉铝 |
| 文章编号： | 1000-0593（2005）10-1556-04 |
| 收稿时间： | 2004-10-26 |
| 修稿时间： | 2005-01-16 |
Proof of Solid State Cathodoluminescence by Using Brightness Waveform |
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| LIU Ming,CHEN Xiao-hong,XU Zheng,TENG Feng,YI Li-xin,GAO De-wen,GUO Li-qun.Proof of Solid State Cathodoluminescence by Using Brightness Waveform[J].Spectroscopy and Spectral Analysis,2005,25(10):1556-1559. | |
| Authors: | LIU Ming CHEN Xiao-hong XU Zheng TENG Feng YI Li-xin GAO De-wen GUO Li-qun |
| Institution: | 1. Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China; 2. Beijing Institute of Petro-Chemical Technology, Beijing 102617, China; 3. Institute of Semiconductors, CAS, Beijing 100083, China; 4. Tianjin University Postdoctoral Working Station, Economy and Technological Development Area Postdoctoral Working Station, Tianjin Zhong-Huan San-Jin Ltd, Tianjin 300457, China |
| Abstract: | Three different inorganic-organic hetero-junctions(A: ITO/SiO_2/Alq_3/Al,B: ITO/Alq_3/SiO_2/Al and C: ITO/SiO_2/Alq_3/SiO_2/Al) were fabricated.The emission can be observed only under positive bias in devices A and B,but under both biases in device C according to their brightness waveforms.With increasing voltage,the increase in blue emission in devices B and C is faster than that in green emission.This is because that the recombination of hot(electrons) and holes,i.e.,electron-hole pairs,produced blue emission in devices B and C,and the recombination of electrons injected from Al with the accumulated holes,which are excited by hot(electrons),produced green emission in device A.Hence,the emissions of the devices are attributed to not only the recombination of electrons and accumulated holes,but also the cathodoluminescence-like(CL-like) emission. |
| Keywords: | CL-like emission Hot electrons Electron-hole pairs Inorganic-organic hetero-junction Tris-(8-hydroxyquinoline)(aluminum) |
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