Sunlight is one of the Earth's clean and sustainable natural energy resources, and extensive studies are conducted on the conversion of solar energy into electricity using photovoltaic (PV) devices. However, single-junction PV devices cannot break the theoretical efficiency limit known as the Shockley–Queisser limit that is caused by the sub-bandgap transmission and heat dissipation losses in semiconductors. Solar thermal conversion approaches may provide an alternative way to exceed this limit and enable more efficient use of solar light than that in PV devices. Recently, spectrally or thermally engineered metamaterials have attracted considerable attention for solar energy applications because of their excellent physical properties. The recent research progress in the development of these photothermal and thermoplasmonic metamaterials, along with their promising applications in solar thermophotovoltaics, radiative cooling, and solar desalination, is discussed.
Bibliographical noteFunding Information:
D.S. and G.K. contributed equally to this work. This research was supported by the Global Research Lab. (GRL) Program, the Pioneer Research Centre Program of Korea funded by the Ministry of Science, ICT & Future Planning (NRF-2016K1A1A2912758, NRF-2013M3C1A3065045), the Centre for Advanced Meta-Materials (CAMM-2014M3A6B3063712) funded by the Ministry of Science, ICT and Future Planning as Global Frontier Project, the Asian Office of Aerospace R&D grant, FA2386-15-1-4024 (15IOA024), the MRSEC: Soft Materials Research Centre funded by the National Science Foundation (DMR-1420736), the Yonsei University Research Fund (Yonsei Frontier Lab. Young Researcher Supporting Program) of 2017, and the KIST Institutional Program (2E28070).
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics