Conversion efficiency of broad-band rectennas for solar energy harvesting applications

被引：54

作者：

Briones, Edgar ^{[1
]}

Alda, Javier ^{[2
]}

Javier Gonzalez, Francisco ^{[1
]}

机构：

[1] Univ Autonoma San Luis Potosi, Slp, Mexico

[2] Univ Complutense Madrid, Fac Opt & Optometry, Appl Opt Complutense Grp, Madrid 28037, Spain

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 09期

关键词：

NIO-NI DIODES; ANTENNA; PERFORMANCE; OXIDE; MICROWAVE; DIPOLE; CELLS;

D O I：

10.1364/OE.21.00A412

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Optical antennas have been proposed as an alternative option for solar energy harvesting. In this work the power conversion efficiency of broadband antennas, log-periodic, square-spiral, and archimedian-spiral antennas, coupled to Metal-Insulator-Metal and Esaki rectifying diodes has been obtained from both theoretical and numerical simulation perspectives. The results show efficiencies in the order of 10(-6) to 10(-9) for these rectifying mechanisms, which is very low for practical solar energy harvesting applications. This is mainly caused by the poor performance of diodes at the given frequencies and also due to the antenna-diode impedance mismatch. If only losses due to antenna-diode impedance mismatch are considered an efficiency of about 10(-3) would be obtained. In order to make optical antennas useful for solar energy harvesting new rectification devices or a different harvesting mechanism should be used. (C) 2013 Optical Society of America

引用

页码：A412 / A418

页数：7

共 43 条

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