Plasmon-Enhanced Solar-Driven Hydrogen Evolution Using Titanium Nitride Metasurface Broadband Absorbers

• DOI: 10.1021/acsphotonics.1c00927
• Publication Date: 2021-10-15T22:27:45Z
• Authors: Meng-Ju Yu; Chih-Li Chang; Hao-Yu Lan; Zong-Yi Chiao; Yu-Chia Chen; Ho Wai Howard Lee; Yia-Chung Chang; Shu-Wei Chang; Takuo Tanaka; Vincent Tung; Ho-Hsiu Chou; Yu-Jung Lu
• Keywords: Plasmonic solar cell; Thermophotovoltaic

Broadband perfect absorbers in the visible region have attracted considerable attention many fields, especially solar thermophotovoltaic and energy harvesting systems. However, developing light with high absorptivity, thermal stability, a broad bandwidth remains great challenge. Here, we theoretically experimentally demonstrate that titanium nitride metasurface absorber exhibits broadband absorption an average of more than 92% over wavelength range 400 to 750 nm. The increase is attributed localized surface plasmon resonance (LSPR). We plasmon-enhanced visible-light-driven hydrogen production from water using polymer photocatalyst integrated TiN absorber. A 300% evolution rate was observed due LSPR enhances rates absorption, carrier separation, hot-carrier transfer photocatalyst. These results enable new approach prepare high-efficiency