基于电子实验室平台下的LED发光优化
发布时间：2019-03-16 17:12
【摘要】：结合表面等离子(SP)的特性,研制了砷化镓材料沉积金膜以及Ga N发光层模型,通过金膜-介质间产生的SP增强作用来显著提高LED的出光效率。理论上采用SP的周期光栅传播与耦合强度模型,分析得出SP对发光效率放大倍数都能满足耦合辐射与发射源自身辐射效率的比。发光实验结果得出:通过金属膜结构的沉积实现了反射率显著下降,结果能够将一部分损耗能量变化为光发射,改进模型能够显著提高发光效率。参数分析得出:模型设计为占空比0.81左右光栅周期能够实现吸收率最大,此时能够较好地实现SP增强LED出光效果;SP的增强作用实现了用于显著改善弱光致发光的发光效率和非线性过程,且非线性过程能够用来检测不同衬底介质少量辐射。
[Abstract]:According to the characteristics of surface plasma (SP), the gold film deposition and Ga N luminous layer model of GaAs were developed. The efficiency of LED was significantly improved by the enhancement of SP produced between gold film and medium. In theory, the propagation and coupling intensity model of periodic grating of SP is adopted. It is concluded that the magnification of SP to luminescence efficiency can satisfy the ratio of coupling radiation to self-radiation efficiency of emission source. The results of luminescence experiment show that the reflectivity of the metal film can be reduced significantly by the deposition of the metal film structure, and the energy loss can be changed into light emission. The improved model can significantly improve the luminous efficiency. The results of parameter analysis show that the maximum absorptivity can be achieved when the duty cycle of the grating is about 0.81, and the SP enhanced LED light output can be achieved well at this time. The enhancement of SP can significantly improve the luminescence efficiency and nonlinear process of weak photoluminescence, and the nonlinear process can be used to detect a small amount of radiation from different substrate media.
【作者单位】： 丽水学院工学院;
【基金】：浙江省教育厅科研项目(Y201636941) 浙江省高校实验室工作研究项目(ZD201604) 龙泉青瓷协同创新中心研究项目(LQQC2016023)
【分类号】：TN312.8
本文编号：2441803
[Abstract]:According to the characteristics of surface plasma (SP), the gold film deposition and Ga N luminous layer model of GaAs were developed. The efficiency of LED was significantly improved by the enhancement of SP produced between gold film and medium. In theory, the propagation and coupling intensity model of periodic grating of SP is adopted. It is concluded that the magnification of SP to luminescence efficiency can satisfy the ratio of coupling radiation to self-radiation efficiency of emission source. The results of luminescence experiment show that the reflectivity of the metal film can be reduced significantly by the deposition of the metal film structure, and the energy loss can be changed into light emission. The improved model can significantly improve the luminous efficiency. The results of parameter analysis show that the maximum absorptivity can be achieved when the duty cycle of the grating is about 0.81, and the SP enhanced LED light output can be achieved well at this time. The enhancement of SP can significantly improve the luminescence efficiency and nonlinear process of weak photoluminescence, and the nonlinear process can be used to detect a small amount of radiation from different substrate media.
【作者单位】： 丽水学院工学院;
【基金】：浙江省教育厅科研项目(Y201636941) 浙江省高校实验室工作研究项目(ZD201604) 龙泉青瓷协同创新中心研究项目(LQQC2016023)
【分类号】：TN312.8
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