{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T08:17:12Z","timestamp":1789546632798,"version":"build-2803163510"},"reference-count":53,"publisher":"AIP Publishing","issue":"11","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2005,9,15]]},"abstract":"<jats:p>We used time-resolved two-photon photoemission (2PPE) spectroscopy to investigate the photochemical behavior, the interfacial electronic structure, and the fate of photogenerated hot electron for carbon tetrachloride adsorbed on Ag(111). The photodissociation cross section was determined over a wide range of photon energy from 1.62to5.69eV, which suggested a low-lying electron affinity level of adsorbed CCl4. A CCl4-derived unoccupied state located at 3.41eV above the Fermi level was attributed to an image potential (IP) state based on its binding energy and effective mass. Polarization dependence of the 2PPE signal revealed that the IP state was populated by an indirect excitation process involving scattering of photoexcited hot electrons rather than direct electronic transition from a bulk band. The lifetime of the IP state was much shorter on the CCl4-covered Ag(111) surface than on the clean one, implying that the electron in the IP state is scavenged effectively by CCl4, probably through dissociative attachment to it. These results are significant in the sense that they provide dynamical evidence for a new relaxation pathway of the IP state in addition to the more common pathway involving back transfer of electron to the substrate.<\/jats:p>","DOI":"10.1063\/1.2031107","type":"journal-article","created":{"date-parts":[[2005,9,20]],"date-time":"2005-09-20T22:00:52Z","timestamp":1127253652000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":13,"title":["Interfacial electron dynamics and hot-electron-driven surface photochemistry of carbon tetrachloride on Ag(111)"],"prefix":"10.1063","volume":"123","author":[{"given":"Sunmin","family":"Ryu","sequence":"first","affiliation":[{"name":"Seoul National University School of Chemistry, , Seoul 151-747, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jinyoung","family":"Chang","sequence":"additional","affiliation":[{"name":"Seoul National University School of Chemistry, , Seoul 151-747, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seong Keun","family":"Kim","sequence":"additional","affiliation":[{"name":"Seoul National University School of Chemistry, , Seoul 151-747, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"317","published-online":{"date-parts":[[2005,9,21]]},"reference":[{"key":"2023062602435928600_c1","doi-asserted-by":"publisher","first-page":"113","DOI":"10.1146\/annurev.physchem.45.1.113","volume":"45","year":"1994","journal-title":"Annu. 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