Two-photon photoemission spectroscopy for silver nanoparticles on a hydrogen-terminated Si(1 1 1) surface: Metal nanoparticle-enhanced photoemission

Tsuneyuki Nakamura, Naoyuki Hirata, Shuhei Nagaoka, Atsushi Nakajima

研究成果: Article査読

5 被引用数 (Scopus)

抄録

Two-photon photoemission (2PPE) spectroscopy was employed for size-selected silver nanoparticles (Ag NPs) deposited on a hydrogen-terminated Si(1 1 1) [H-Si(1 1 1)] to reveal photoemission enhancement through local surface plasmon resonance (LSPR). At low coverage of Ag NPs around 0.005 monolayer equivalents (MLE), the photoemission from the H-Si(1 1 1) substrate was enhanced by ∼2 × 102 times. Above 0.10 MLE, in contrast, photoemission from the Ag NPs themselves was observed. From the experimental results of polarization and the photoemission angle dependence, the photoemission enhancement, depending on the coverage of Ag NPs, is attributed to near-fields from LSPR of Ag NPs.

本文言語English
ページ(範囲)69-74
ページ数6
ジャーナルChemical Physics Letters
489
1-3
DOI
出版ステータスPublished - 2010 4月 1

ASJC Scopus subject areas

  • 物理学および天文学(全般)
  • 物理化学および理論化学

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