Room temperature hydrogen sensing performances of multiple networked Ga N nanowire sensors codecorat

• 作 者: PARK Sunghoon KIM Soohyun PARK Suyoung LEE Sangmin LEE Chongmu
• 机 构: Department of Materials Science and Engineering, Inha University, 253 Yonghyun-dong Nam-gu, Incheon,
• 出 处: Journal of Central South University
• 发表日期: 2015年05期
• 关键词: counterpart stronger Room annealing gases underlying irradiation parent explaine

The sensing performances of multiple networked Ga N nanowire(NW) sensor codecorated with Au and Pt nanoparticles were examined. The pristine Ga N nanowires show responses of approximately 108%-173% to 0.05%-0.25% H2 at room temperature. On the other hand, the Ga N nanowires decorated with Au and those decorated with Pt lead to 1.1-1.3 and 1.2-1.6 times,respectively, stronger responses to 0.05%-0.25% H2. In contrast, the Au Pt-codecorated Ga N nanowires show 1.3-2.0 times stronger responses to 0.05%-0.25% H2. In other words, the Ga N nanorods codecorated with Au and Pt nanoparticles show much stronger response to H2 gas than the Au or Pt monometal-decorated counterpart. The underlying mechanism for the enhanced response of the Au Pt-codecorated Ga N nanowire was discussed.

The sensing performances of multiple networked Ga N nanowire (NW) sensor codecorated with Au and Pt nanoparticles were examined. The pristine Ga N nanowires show responses of approximately 108% -173% to 0.05% -0.25% H2 at room temperature. On the other hand, the Ga N nanowires decorated with Au and those decorated with Pt lead to 1.1-1.3 and 1.2-1.6 times, respectively, stronger responses to 0.05% -0.25% H2. In contrast, the Au Pt-codecorated Ga N nanowires show 1.3 -2.0 times stronger responses to 0.05% -0.25% H2. In other words, the Ga N nanorods codecorated with Au and Pt nanoparticles show much stronger response to H2 gas than the Au or Pt monometal-decorated counterpart. The underlying mechanism for the enhanced response of the Au Pt-codecorated Ga N nanowire was discussed.