FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2016376718> ?p ?o ?g. }

• W2016376718 endingPage "12292" @default.
• W2016376718 startingPage "12286" @default.
• W2016376718 abstract "The relaxation dynamics of photoexcited CdSe nanoparticles (NPs) were studied with femtosecond pump−probe spectroscopy in the spectral range from 450 nm to 5 μm. Thus, the intraband relaxation of the electron and the hole were monitored with femtosecond time resolution. The transition from delocalized electronic to localized defect states and the slower relaxation through the trapping sites (trap hopping mechanism) were followed by time-resolved emission on time scales from picoseconds to milliseconds in the spectral range from the visible into the mid-infrared. The spectral dynamics in the visible, near-infrared (NIR), and infrared (IR) range give a mechanistic picture about the relaxation pathway of the excited charge carriers in CdSe NPs. In addition, by using electron and hole quenchers to the photoexcited nanoparticles, we could assign the observed dynamics to the electron or the hole. In the visible range, bleach features (negative signals in the differential transient absorption measurements) were observed at early delay times with time components of 2 ps, 30 ps, and a long-lived component of ∼200 ps. Based on the quenching experiments, the bleach could be assigned to contributions from the electron and the hole. In the NIR and IR spectral range, the transient signal for short delay times (<1 ns) were positive (transient absorption). A decay time of 1.2 ps was found for the transient absorption observed in the NIR. With the carrier removal technique, it could be shown that the NIR signal is mainly due to hole transitions. The IR signal with lifetimes of 2 ps, 30 ps, and a long component of ∼200 ps compares directly to the decay times observed in the visible spectral range. It therefore is also composed of contributions from electron and hole. Photoluminescence is observed in the visible range at 570 nm (near band edge recombination), in the NIR at 1000 nm (deep-trap emission), and in the IR region at 4.8 μm (deeper-trap emission) with lifetimes of 43 ns, 250 ns, and 1 μs, respectively. The lifetimes of the emission increased for longer monitoring wavelengths, suggesting that for the investigated sample, the carriers relax from the band edge into shallow traps and from there continue stepwise relaxation into lower energy sites (trap hopping mechanism)." @default.
• W2016376718 created "2016-06-24" @default.
• W2016376718 creator A5021728178 @default.
• W2016376718 creator A5024800825 @default.
• W2016376718 creator A5025158613 @default.
• W2016376718 creator A5071617484 @default.
• W2016376718 date "2001-11-08" @default.
• W2016376718 modified "2023-10-16" @default.
• W2016376718 title "The Relaxation Pathways of CdSe Nanoparticles Monitored with Femtosecond Time-Resolution from the Visible to the IR: Assignment of the Transient Features by Carrier Quenching" @default.
• W2016376718 cites W1539216443 @default.
• W2016376718 cites W1967868829 @default.
• W2016376718 cites W1971657948 @default.
• W2016376718 cites W1971962081 @default.
• W2016376718 cites W1974641276 @default.
• W2016376718 cites W1977101368 @default.
• W2016376718 cites W1980458271 @default.
• W2016376718 cites W1982221440 @default.
• W2016376718 cites W1982564571 @default.
• W2016376718 cites W1990796785 @default.
• W2016376718 cites W1993846879 @default.
• W2016376718 cites W1998682694 @default.
• W2016376718 cites W2000372728 @default.
• W2016376718 cites W2002177430 @default.
• W2016376718 cites W2003028703 @default.
• W2016376718 cites W2004567430 @default.
• W2016376718 cites W2005476364 @default.
• W2016376718 cites W2007322599 @default.
• W2016376718 cites W2008522280 @default.
• W2016376718 cites W2014085278 @default.
• W2016376718 cites W2014099975 @default.
• W2016376718 cites W2015160114 @default.
• W2016376718 cites W2016871163 @default.
• W2016376718 cites W2017826880 @default.
• W2016376718 cites W2020432059 @default.
• W2016376718 cites W2022258759 @default.
• W2016376718 cites W2022937972 @default.
• W2016376718 cites W2023188395 @default.
• W2016376718 cites W2025669689 @default.
• W2016376718 cites W2026273139 @default.
• W2016376718 cites W2028402842 @default.
• W2016376718 cites W2033250776 @default.
• W2016376718 cites W2035120760 @default.
• W2016376718 cites W2045573180 @default.
• W2016376718 cites W2048992802 @default.
• W2016376718 cites W2050275711 @default.
• W2016376718 cites W2053867938 @default.
• W2016376718 cites W2055257764 @default.
• W2016376718 cites W2057039022 @default.
• W2016376718 cites W2057227523 @default.
• W2016376718 cites W2057914760 @default.
• W2016376718 cites W2060565103 @default.
• W2016376718 cites W2063672659 @default.
• W2016376718 cites W2066091879 @default.
• W2016376718 cites W2068824751 @default.
• W2016376718 cites W2075539838 @default.
• W2016376718 cites W2079225748 @default.
• W2016376718 cites W2085313826 @default.
• W2016376718 cites W2086575241 @default.
• W2016376718 cites W2087098122 @default.
• W2016376718 cites W2089637698 @default.
• W2016376718 cites W2091975799 @default.
• W2016376718 cites W2092790214 @default.
• W2016376718 cites W2094338536 @default.
• W2016376718 cites W2127569471 @default.
• W2016376718 cites W2150512041 @default.
• W2016376718 cites W2163119405 @default.
• W2016376718 cites W2199966902 @default.
• W2016376718 cites W225669340 @default.
• W2016376718 cites W2952919707 @default.
• W2016376718 cites W3022103717 @default.
• W2016376718 doi "https://doi.org/10.1021/jp0124589" @default.
• W2016376718 hasPublicationYear "2001" @default.
• W2016376718 type Work @default.
• W2016376718 sameAs 2016376718 @default.
• W2016376718 citedByCount "217" @default.
• W2016376718 countsByYear W20163767182012 @default.
• W2016376718 countsByYear W20163767182013 @default.
• W2016376718 countsByYear W20163767182014 @default.
• W2016376718 countsByYear W20163767182015 @default.
• W2016376718 countsByYear W20163767182016 @default.
• W2016376718 countsByYear W20163767182017 @default.
• W2016376718 countsByYear W20163767182018 @default.
• W2016376718 countsByYear W20163767182019 @default.
• W2016376718 countsByYear W20163767182020 @default.
• W2016376718 countsByYear W20163767182021 @default.
• W2016376718 countsByYear W20163767182022 @default.
• W2016376718 countsByYear W20163767182023 @default.
• W2016376718 crossrefType "journal-article" @default.
• W2016376718 hasAuthorship W2016376718A5021728178 @default.
• W2016376718 hasAuthorship W2016376718A5024800825 @default.
• W2016376718 hasAuthorship W2016376718A5025158613 @default.
• W2016376718 hasAuthorship W2016376718A5071617484 @default.
• W2016376718 hasConcept C104232198 @default.
• W2016376718 hasConcept C113196181 @default.
• W2016376718 hasConcept C120665830 @default.
• W2016376718 hasConcept C121332964 @default.
• W2016376718 hasConcept C121745418 @default.
• W2016376718 hasConcept C125287762 @default.

• next