可见光通信系统中硅光电池响应特性研究  

Response properties of Si photovoltaic cell in VLC system

作　　者：郭俊清[1] 陈雄斌[1] 李洪磊[1] 黄涌[1] 陈弘达[1] 

机构地区：[1]中国科学院半导体研究所,北京100083

出　　处：《光电子．激光》2015年第3期474-479,共6页Journal of Optoelectronics·Laser

基　　金：国家"973"计划(2013CB329205);国家"863"计划(2013AA013602;2013AA013603;2013AA03A104);北京市科技计划(Z141100001414004)资助项目

摘　　要：提出了一种普通室内照明条件下光能量和光信号无线复用传输的可见光通信(VLC)方式。与传统的VLC不同,采用Si光电池阵列替代Si光电二极管(PIN)和雪崩二极管(APD)做VLC接收机探测器,在进行可见光数据通信的同时,接收的光能量转换为电能给锂电池充电。基于载流子输运模型分析了环境光照度与Si光电池阵列光电响应速度的关系,通过实验测试验证了普通室内照明条件下Si光电池的响应特性和输出电压特性。研究结果表明,随着光照度的增加,Si光电池阵列输出电压和响应速度均增加,当探测器距离LED光源1.8m、照度为380lx时,通过优化设计放大电路,探测器响应速度可达300kHz,输出电压可达2.8V,满足信号探测和升压型电池充电电路的要求。A visible light communication（VLC）method for both energy and signal wireless transmitting is introduced with ordinary indoor lighting conditions.Different from traditional VLC,silicon photovoltaic cell array is used to replace silicon photodiode（PIN）and avalanche diode（APD）as detector,which can gain energy for charging the lithium battery and transmit data through visible light simultaneously.In this paper,based on carrier transport model,the response properties of silicon photovoltaic cell array related to environmental illumination are analyzed.The response properties and output voltage of silicon photovoltaic cell are tested and verified in ordinary indoor illumination.Results have shown that the response properties and output voltage are both increased with raised illumination level.When the distance between detector and LED is 1.8mand the illumination is 380 lx,by amplifying circuit designing,300 kHz transmitting rate is achieved and the output voltage is 2.8V,which can meet the need of signal detection and boost battery charging circuit.

关 键 词：可见光通信(VLC) 能量自给 Si光电池阵列 光电响应特性 载流子输运模型 

分 类 号：TN919.12[电子电信—通信与信息系统]