Hydrogen activity tuning of Pt-doped WO3 photonic crystal |
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| Authors: | Zhuoying XieHua Xu Fei RongLiguo Sun Shengzi ZhangZhong-Ze Gu |
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| Affiliation: | a State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, Chinab Laboratory of Environment and Biosafety, Research Institute of Southeast University in Suzhou, Dushu Lake Higher Education Town, Suzhou 215123, China |
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| Abstract: | A photonic crystal responsive to H2 has been fabricated by replicating polystyrene colloidal crystal template with WO3 sol-gel, followed with subsequent Pt sputter-deposition. Under H2 stimulation, the reflection peak of the photonic crystal rapidly shifted to short wavelength and its intensity declined accordingly. The reflection peak returned to its original location after exposure to oxygen atmosphere. The Pt-WO3 photonic crystal also exhibited excellent, tunable optical performance with high sensitivity to hydrogen in the range of 100% to 0.1%. |
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| Keywords: | Hydrogen gas sensor Tungsten trioxide Inverse opal Photonic crystal |
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