基于電子實(shí)驗(yàn)室平臺(tái)下的LED發(fā)光優(yōu)化
發(fā)布時(shí)間：2019-03-16 17:12
【摘要】：結(jié)合表面等離子(SP)的特性,研制了砷化鎵材料沉積金膜以及Ga N發(fā)光層模型,通過(guò)金膜-介質(zhì)間產(chǎn)生的SP增強(qiáng)作用來(lái)顯著提高LED的出光效率。理論上采用SP的周期光柵傳播與耦合強(qiáng)度模型,分析得出SP對(duì)發(fā)光效率放大倍數(shù)都能滿(mǎn)足耦合輻射與發(fā)射源自身輻射效率的比。發(fā)光實(shí)驗(yàn)結(jié)果得出:通過(guò)金屬膜結(jié)構(gòu)的沉積實(shí)現(xiàn)了反射率顯著下降,結(jié)果能夠?qū)⒁徊糠謸p耗能量變化為光發(fā)射,改進(jìn)模型能夠顯著提高發(fā)光效率。參數(shù)分析得出:模型設(shè)計(jì)為占空比0.81左右光柵周期能夠?qū)崿F(xiàn)吸收率最大,此時(shí)能夠較好地實(shí)現(xiàn)SP增強(qiáng)LED出光效果;SP的增強(qiáng)作用實(shí)現(xiàn)了用于顯著改善弱光致發(fā)光的發(fā)光效率和非線性過(guò)程,且非線性過(guò)程能夠用來(lái)檢測(cè)不同襯底介質(zhì)少量輻射。
[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.
【作者單位】： 麗水學(xué)院工學(xué)院;
【基金】：浙江省教育廳科研項(xiàng)目(Y201636941) 浙江省高校實(shí)驗(yàn)室工作研究項(xiàng)目(ZD201604) 龍泉青瓷協(xié)同創(chuàng)新中心研究項(xiàng)目(LQQC2016023)
【分類(lèi)號(hào)】：TN312.8
本文編號(hào)：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.
【作者單位】： 麗水學(xué)院工學(xué)院;
【基金】：浙江省教育廳科研項(xiàng)目(Y201636941) 浙江省高校實(shí)驗(yàn)室工作研究項(xiàng)目(ZD201604) 龍泉青瓷協(xié)同創(chuàng)新中心研究項(xiàng)目(LQQC2016023)
【分類(lèi)號(hào)】：TN312.8
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