Presentation Information

5:00 PM - 5:15 PM JST(8:00 AM - 8:15 AM UTC)English Presentation

[7p-N203-10]Broadband Solar Absorber Design Using Optimization-Driven Nanostructures for Efficient Solar–Thermal Conversion

〇(DC)Chih-Chung Wang^1,3, Jia-Han Li^1,3,4, Tadaaki Nagao^1,2 (1.NIMS, 2.Hokkaido Univ., 3.Dept. of ESOE, National Taiwan Univ., 4.RTRC, National Taiwan Univ.)

Keywords:

solar absorber,finite-difference time-domain (FDTD),metal-insulator-metal (MIM)

We present an optimized tungsten-based MIM absorber with nanoscale feature variation. Compared to conventional multilayer or random designs, the proposed structure achieves high solar absorptance and low mid-infrared emission. FDTD simulations and particle swarm optimization (PSO) confirm over 92% solar absorptance and less than 5% IR emittance, showing promise for next-generation broadband solar–thermal energy harvesting.

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