博客来棋牌

LED灯珠的基本发光原理

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LED灯珠的基本发光原理

 LED灯珠的基本发光原理   

虽然目前主流的常见的LED灯具包含:led球泡灯LED筒灯,LED灯带,LED隧道灯led灯管led日光灯led工矿灯led路灯等,但所有的这些LED灯具都离不开基本的发光单元部件——LED灯珠。下面我们来讲讲LED灯珠的基本发光原理。    

博客来棋牌LEDSHIYOUⅢYIⅣZUHUAHEWU,RUGaAs(SHENHUAJIA)、GaP(LINHUAJIA)HEGaAsP(LINSHENHUAJIA)DENGBANDAOTIZHICHENGDE,ZHEIXIEBANDAOTICAILIAOHUIYUXIANTOUGUOZHURUHUOCHANZADENGGONGYIYICHANSHENGPHENJIAGOU。YINCITAJUYOUYIBANPYINJIEDElYINTEXING,JIZHENGXIANGDAOTONG,YIJIFANXIANGJIEZHIHEJICHUANTEXING:CIWAI,ZAIYIDINGTIAOJIANXIA,TAHAIJUYOUFAGUANGTEXING。LIANGZHONGBUTONGDEZAILIUZIKONGXUEHEDIANZIZAIBUTONGDEDIANJIDIANYAZUOYONGXIA

博客来棋牌CONGDIANJILIUXIANGPHENJIAGOU。DANGKONGXUEHEDIANZIXIANGYUERCHANSHENGFUHE,DIANZIHUIDIELUODAOJIAODIDENENGJIE;TONGSHIYIGUANGZIDEMOSHISHIFANGCHUNENGLIANG。

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FUHESHIZAISHAOZIKUOSANQUNEIFAGUANGDE,SUOYIGUANGJINZAIKAOJINPNJIEMIANSHUumYINEICHANSHENG。

理论和实践证明,光的峰值波长义与发光区域的半导体材料禁带宽度Eg有关,即image式中Eg的单位为电子伏特(eV)。若能产生可见光(波长在380 nm紫光一780 nm红光),半导体材料的E,应在3.26-1.63 eV。比红光波长长的光为红外光。现在已有红外、红、黄、绿及蓝光发光二极管,其中蓝光二极管的成本和价格很高,使用不普遍。

    TASUOFACHUGUANGDEBOZHANG(JUEDINGYANSE)YOUZUCHENGPHENJIAGOUDEBANDAOTIWULIAODEJINDAINENGLIANGJUEDING。YOUYUGUIHEZHESHIJIANJIEDAIXICAILIAO,ZAIZHEIXIECAILIAOZAICHANGWENXIADIANZIYUKONGXUEDEFUHESHIFEIFUSHEYUEQIAN,CILEIYUEQIANMEIYOUSHICHUGUANGZI,SUOYIGUIHEZHEERJIGUANBUNENGFAGUANG。DANZAIJIDIWENDETEDINGWENDUXIAZEHUIFAGUANG,BIXUZAITESHUJIAODUBUCAIKEFAXIAN,ERFAGUANGDELIANGDUBUMINGXIAN。FAGUANGERJIGUANSUOYONGDECAILIAODOUSHIZHIJIEDAI

XIXINGDE,ZHEIXIEJINDAINENGLIANGDUIYINGJINHONGWAIXIAN、KEJIANGUANGHUOJINZIWAIXIANBODUANDEGUANGNENGLIANG。

   FAZHANCHUQI,CAIYONGSHENHUAJIA(GaAs)DEFAGUANGERJIGUANZHINENGFACHUHONGWAIXIANHUOHONGGUANG。SUIZHECAILIAOKEXUEDEJINBU,GEZHONGYANSEDEFAGUANGERJIGUANXIANJINJIEKEZHIZAO。DIANLIUCONGLEDYANGJILIUXIANGYINJISHIDIAOJIEDIANLIUBIANKEDIAOJIEGUANGDEQIANGDU,RUTU1YI1SUOSHI。

图1-1   LED发光原理

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