Design and Optimization of Multilayered Metal/Dielectric Film Structure for Solar Photothermal Conversion

Ying Wu; Ertao Hu; Jing Wang; Wei Wei

doi:10.3788/AOS202040.1431001

Acta Optica Sinica, Volume. 40, Issue 14, 1431001(2020)

Design and Optimization of Multilayered Metal/Dielectric Film Structure for Solar Photothermal Conversion

Ying Wu¹, Ertao Hu^1、*, Jing Wang², and Wei Wei¹

¹College of Electronic and Optical Engineering & College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu 210023, China;

²Department of Basic Education, Tongda College, Nanjing University of Posts and Telecommunications, Yangzhou, Jiangsu 225127, China

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Figures & Tables(6)

Fig. 1. Schematic of multilayered tungsten-alumina-based film structure (from top to bottom:Al₂O₃/W/Al₂O₃/W/Al₂O₃/Cu)

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Fig. 2. Solar photothermal conversion efficiency of ten-layered W/Al₂O₃ film structure

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Fig. 3. Reflectance spectrum of optimized film structure of Al₂O₃ (83.3 nm) /W (6.4 nm) /Al₂O₃(72.8 nm)/W (14.7 nm)/Al₂O₃ (86.1 nm)/Cu (>100.0 nm)

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Fig. 4. Influence of layer number on multilayered W/Al₂O₃film structure when C=1 or 100. (a) Solar absorptivity;(b) thermal emissivity ;(c) solar photothermal conversion efficiency

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Fig. 5. Influences of temperatures and solar concentration ratios on performances of six-layered W/Al₂O₃ film structure. (a) Influence of temperature when C=50; (b) influence of solar concentration ratio at 600 K

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Table 1. Optimized W/Al₂O₃ solar selective absorption films when T=600 K

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Table 1. Optimized W/Al₂O₃ solar selective absorption films when T=600 K

Number of layers	Solar concentration ratio	Film structure
4	C=1	Al₂O₃(68.9 nm)/W(10.2 nm)/Al₂O₃(37.7 nm)/Cu(>100.0 nm)
	C=100	Al₂O₃(82.9 nm)/W(10.6 nm)/Al₂O₃(63.4 nm)/Cu(>100.0 nm)
6	C=1	Al₂O₃(64.2 nm)/W(5.8 nm)/Al₂O₃(31.4 nm)/W(13.1 nm)/Al₂O₃(5.7 nm)/Cu(>100.0 nm)
	C=100	Al₂O₃(85.3 nm)/W(6.0 nm)/Al₂O₃(73.6 nm)/W(14.3 nm)/Al₂O₃(84.5 nm)/Cu(>100.0 nm)
8	C=1	Al₂O₃(69.7 nm)/W(6.8 nm)/Al₂O₃(31.4 nm)/W(5.8 nm)/Al₂O₃(1.0 nm)/W(7.7 nm)/Al₂O₃(4.1 nm)/Cu(>100.0 nm)
	C=100	Al₂O₃(81.4 nm)/W(5.0 nm)/Al₂O₃(70.5 nm)/W(10.6 nm)/Al₂O₃(100.9 nm)/W(15.0 nm)/Al₂O₃(133.7 nm)/Cu(>100.0 nm)
10	C=1	Al₂O₃(73.6 nm)/W(7.1 nm)/Al₂O₃(40.8 nm)/W(48.5 nm)/Al₂O₃(1.0 nm)/W(44.0 nm)/Al₂O₃(2.6 nm)/W(38.9 nm)/Al₂O₃(133.7 nm)/Cu(>100.0 nm)
	C=100	Al₂O₃(86.8 nm)/W(5.2 nm)/Al₂O₃(72.8 nm)/W(8.9 nm)/Al₂O₃(74.4 nm)/W(7.3 nm)/Al₂O₃(97.8 nm)/W(34.1 nm)/Al₂O₃(47.8 nm)/Cu(>100.0 nm)

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Ying Wu, Ertao Hu, Jing Wang, Wei Wei. Design and Optimization of Multilayered Metal/Dielectric Film Structure for Solar Photothermal Conversion[J]. Acta Optica Sinica, 2020, 40(14): 1431001

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