TY - JOUR
T1 - Two-photon photoemission spectroscopy for silver nanoparticles on a hydrogen-terminated Si(1 1 1) surface
T2 - Metal nanoparticle-enhanced photoemission
AU - Nakamura, Tsuneyuki
AU - Hirata, Naoyuki
AU - Nagaoka, Shuhei
AU - Nakajima, Atsushi
N1 - Funding Information:
This work is partly supported by a Grant-in-aid for Scientific Research (A) (No. 19205004 ) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) . T.N. expresses his gratitude to the research fellowship from Japan Society for the Promotion of Science for Young Scientists.
PY - 2010/4/1
Y1 - 2010/4/1
N2 - 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.
AB - 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.
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U2 - 10.1016/j.cplett.2010.02.010
DO - 10.1016/j.cplett.2010.02.010
M3 - Article
AN - SCOPUS:77949487369
SN - 0009-2614
VL - 489
SP - 69
EP - 74
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-3
ER -