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Ultra-broadband absorber and perfect thermal emitter for high-efficiency solar energy absorption and conversion

Author

Listed:
  • Yuan, Haining
  • Yi, Yingting
  • Song, Qianju
  • Yi, Zao
  • Sun, Tangyou
  • Tang, Chaojun
  • Zeng, Qingdong
  • Cheng, Shubo
  • Wu, Pinghui

Abstract

This study proposes a pyramid-shaped solar absorber designed with multi-layered Ti-SiO2 ring stacked. The structure achieves an average absorption efficiency of 98.03 % over the range of 280–4000 nm, and under AM1.5 spectral conditions, the weighted average absorption efficiency reaches 97.66 %, the bandwidth with an absorption efficiency greater than 90 % reaches 3750 nm. To explore the reason for achieving ultra-broadband absorption with this structure, the electromagnetic field distribution at three absorption peaks was calculated. The results revealed that the resonance between the polarization direction of the three-layer circular ring stacked structure and the plasmon resonance at the junction of Ti and SiO2 contribute to the model's capability for ultra-broadband high-efficiency absorption. At the same time, the thermal emissivity of the structure was calculated at high temperatures of 1000 K and 2000 K, both exceeding 97 %. Furthermore, due to the fully symmetrical design, the absorber is polarization-independent. It was found through calculations that whether in TM mode or TE mode, as the incident angle varies from 0° to 60°, the average absorption efficiency of the absorber changes only by 11.16 %, thereby verifying the structure's excellent insensitivity to incident light angles. In summary, all these characteristics indicate that the model has excellent application prospects in fields such as solar energy collection and photothermal conversion.

Suggested Citation

  • Yuan, Haining & Yi, Yingting & Song, Qianju & Yi, Zao & Sun, Tangyou & Tang, Chaojun & Zeng, Qingdong & Cheng, Shubo & Wu, Pinghui, 2024. "Ultra-broadband absorber and perfect thermal emitter for high-efficiency solar energy absorption and conversion," Renewable Energy, Elsevier, vol. 237(PC).
    • Handle: RePEc:eee:renene:v:237:y:2024:i:pc:s096014812401886x
    DOI: 10.1016/j.renene.2024.121818
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    References listed on IDEAS

    as
    1. Yang Li & Xiaoning Ru & Miao Yang & Yuhe Zheng & Shi Yin & Chengjian Hong & Fuguo Peng & Minghao Qu & Chaowei Xue & Junxiong Lu & Liang Fang & Chao Su & Daifen Chen & Junhua Xu & Chao Yan & Zhenguo Li, 2024. "Flexible silicon solar cells with high power-to-weight ratios," Nature, Nature, vol. 626(7997), pages 105-110, February.
    2. Ren, Yang & Cui, Wei & Li, Zhenxiong & Zhang, Lei & Yang, Zhimin & Lu, Shaojun & Huo, Yashan & Wu, Xiongxiong & Li, Gang & Bai, Lang & Zhao, Ye & He, Zhihui, 2024. "Tunable broadband absorbers with ultra-high thermal emissivity for the mxene/ti-based metamaterial," Renewable Energy, Elsevier, vol. 231(C).
    3. Guo, Ling & Shi, Minfang & Liu, Yajie & Ma, Jun & Yang, Hongyan, 2023. "High efficient ultra-broadband nanoscale solar energy absorber based on stacked bilayer nano-arrays structure," Renewable Energy, Elsevier, vol. 215(C).
    4. Zhao, Bin & Liu, Jie & Hu, Mingke & Ao, Xianze & Li, Lanxin & Xuan, Qingdong & Pei, Gang, 2023. "Performance analysis of a broadband selective absorber/emitter for hybrid utilization of solar thermal and radiative cooling," Renewable Energy, Elsevier, vol. 205(C), pages 763-771.
    5. Vaithinathan Karthikeyan & James Utama Surjadi & Xiaocui Li & Rong Fan & Vaskuri C. S. Theja & Wen Jung Li & Yang Lu & Vellaisamy A. L. Roy, 2023. "Three dimensional architected thermoelectric devices with high toughness and power conversion efficiency," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    6. Yu, Peiqi & Yang, Hua & Chen, Xifang & Yi, Zao & Yao, Weitang & Chen, Jiafu & Yi, Yougen & Wu, Pinghui, 2020. "Ultra-wideband solar absorber based on refractory titanium metal," Renewable Energy, Elsevier, vol. 158(C), pages 227-235.
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