Solar thermophotovoltaic using Al/sub 2/O/sub 3//Er/sub 3/Al/sub 5/O/sub 12/ eutectic composite selective emitter
Solar thermophotovoltaic using Al/sub 2/O/sub 3//Er/sub 3/Al/sub 5/O/sub 12/ eutectic composite selective emitter
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太阳能热光伏采用Al/sub 2/O/sub 3//Er/sub 3/Al/sub 5/O/sub 12/共晶复合选择性发射极
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
H. Ohtsubo
中科院分区：
文献类型：
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作者：
H. Yugami;H. Sai;K. Nakamura;N. Nakagawa;H. Ohtsubo
研究了Al/sub 2/O/sub 3//Er/sub 3/Al/sub 5/O/sub 12/共晶复合材料的热发射特性，并将其应用于热光伏（TPV）发电机的选择性发射极。由于这种材料具有独特的结构，因此预期具有高机械性能。观察到Er/sup ~（3+）/离子在波长1.5 /spl μ/m处的选择性发射带。Al/sub 2/O/sub 3//Er/sub 3/Al/sub 5/O/sub 12/共晶复合材料是一种适合于TPV系统的发射极材料。采用该选择性发射体材料制作了一个直径为1.56 m的碟形太阳能聚光器，并进行了测试。研究了宽带SiC和Al/sub 2/O/sub 3//Er/sub 3/Al/sub 5/O/sub 12/共晶复合选择性发射极系统的性能和元件温度。TPV光学元件的低热负荷被确认为选择性发射极系统。选择性发射极系统也能提高GaSb光伏电池的填充因子。
Thermal emission properties of Al/sub 2/O/sub 3//Er/sub 3/Al/sub 5/O/sub 12/ eutectic composite are studied for the application of selective emitter of thermophotovoltaic (TPV) power generator. Since this material has a unique structure, high mechanical performance would be expected. Selective emission bands at wavelength 1.5 /spl mu/m due to Er/sup 3+/ ions are observed. Since these emission bands match up the sensitive region of GaSb PV cell, Al/sub 2/O/sub 3//Er/sub 3/Al/sub 5/O/sub 12/ eutectic composite is a suitable emitter material for TPV systems. Solar TPV system with a dish-type solar concentrator (diameter=1.56 m) has been made and tested using the selective emitter material. The performance and component temperature are studied for the system equipped with broad band SiC and Al/sub 2/O/sub 3//Er/sub 3/Al/sub 5/O/sub 12/ eutectic composite selective emitters. Low thermal load for TPV optical components is confirmed for the selective emitter system. The improvement of fill factor of GaSb PV cells is also observed for selective emitter system.