AlGaAs Photovoltaics for Indoor Energy Harvesting in mm-Scale Wireless Sensor Nodes

被引：87

作者：

Teran, Alan S. ^{[1
]}

Wong, Joeson ^{[1
]}

Lim, Wootaek ^{[1
]}

Kim, Gyouho ^{[1
]}

Lee, Yoonmyoung ^{[2
]}

Blaauw, David ^{[1
]}

Phillips, Jamie D. ^{[1
]}

机构：

[1] Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA

[2] Sungkyunkwan Univ, Dept Semicond Syst Engn, Suwon 440746, South Korea

来源：

IEEE TRANSACTIONS ON ELECTRON DEVICES | 2015年 / 62卷 / 07期

基金：

美国国家科学基金会;

关键词：

Aluminum gallium arsenide (AlGaAs); energy harvesting; gallium arsenide (GaAs); photovoltaics; PERIMETER RECOMBINATION; VOLTAGE; EFFICIENCY;

D O I：

10.1109/TED.2015.2434336

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Indoor photovoltaic energy harvesting is a promising candidate to power millimeter (mm)-scale systems. The theoretical efficiency and electrical performance of photo-voltaics under typical indoor lighting conditions are analyzed. Commercial crystalline Si and fabricated GaAs and Al0.2Ga0.8As photovoltaic cells were experimentally measured under simulated AM 1.5 solar irradiation and indoor illumination conditions using a white phosphor light-emitting diode to study the effects of input spectra and illuminance on performance. The Al0.2Ga0.8As cells demonstrated the highest performance with a power conversion efficiency of 21%, with open-circuit voltages >0.65 V under low lighting conditions. The GaAs and Al0.2Ga0.8As cells each provide a power density of similar to 100 nW/mm(2) or more at 250 lx, sufficient for the perpetual operation of present-day low-power mm-scale wireless sensor nodes.

引用

页码：2170 / 2175

页数：6

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