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Volumn 113, Issue 28, 2009, Pages 12059-12066

Excitation energy dependence of fluorescence intermittency in cdse/zns core-shell nanocrystals

Author keywords

[No Author keywords available]

Indexed keywords

ABSORPTION RATES; BAND GAPS; CDSE/ZNS; CDSE/ZNS CORE/SHELL; CORE-SHELL NANOCRYSTALS; DIFFERENT SIZES; EMISSION DYNAMICS; EXCESS ENERGY; FLUORESCENCE INTERMITTENCY; POWER LAW; POWER LAW EXPONENT; SPECTRAL DIFFUSION; ULTRA VIOLET EXCITATION;

EID: 68149094508     PISSN: 19327447     EISSN: 19327455     Source Type: Journal    
DOI: 10.1021/jp8104216     Document Type: Article
Times cited : (26)

References (39)
  • 13
    • 84869571935 scopus 로고    scopus 로고
    • In the diffusion-controlled electron transfer theory of Tang andMarcus*there are two characteristic times*the truncation or saturation timeand the critical time The Truncation Time is Notated as 1/γ in Their Work, Todistinguish It from the Critical Time, Notated Tc; the Critical Time is muchshorter. (Recent Experiments Suggest That the Critical Time is on the Orderof a Few milliseconds.) We Will Notate the Truncation Time as τon.
    • In the diffusion-controlled electron transfer theory of Tang andMarcus, there are two characteristic times, the truncation or saturation timeand the critical time. The truncation time is notated as 1/γ in their work, todistinguish it from the critical time, notated tc; the critical time is muchshorter. (Recent experiments suggest that the critical time is on the orderof a few milliseconds.) We will notate the truncation time as τon.
  • 21
    • 68149175461 scopus 로고    scopus 로고
    • Two lots of these NCs were used; the first lot was used for themeasurements shown in Figure 4a-c had an absorption peak at 583nm an emission peak at 602 nm The Second Lot was Used for Themeasurements in Figure 4d-f and Had an Absorption Peak At 584 Nm Andan Emission Peak At 595 nm. the Absorption Spectrum from the First Lot Isshown in Figure 1.
    • Two lots of these NCs were used; the first lot was used for themeasurements shown in Figure 4a-c and had an absorption peak at 583nm and an emission peak at 602 nm. The second lot was used for themeasurements in Figure 4d-f and had an absorption peak at 584 nm andan emission peak at 595 nm. The absorption spectrum from the first lot isshown in Figure 1.
  • 28
    • 68149155111 scopus 로고    scopus 로고
    • Plenary lecture at 5th International Symposium on theTheory of Atomic and Molecular Clusters, Richmond, VA, May
    • Marcus, R. A. On the Theory of Intermittent Fluorescence ofQuantum Dots. Plenary lecture at 5th International Symposium on theTheory of Atomic and Molecular Clusters, Richmond, VA, May 2007.
    • (2007) On the Theory of Intermittent Fluorescence ofQuantum Dots.
    • Marcus, A.R.1
  • 39
    • 84869563796 scopus 로고    scopus 로고
    • note The highest energy excitation used by Knappenberger et al.6 in theirinitial study corresponded to 525 nm so they did not explore this higherenergy regime with spherical NCs In a Follow-up Study of Excitation Energydependence in Tetradecylphosphonic Acid-capped CdSe Nanorods, They Sawno Difference Between 400 Nm Excitation and 510 Nm excitation. However,the Truncation Times Observed with NRs Are So Much Shorter (of Order 1 s)that It is Possible That Whenever the New Dynamics Are Introduced by Thehigh-energy Excitation, They Only Operate on the Longer (∼10 s) Timescalewe observe.
    • The highest energy excitation used by Knappenberger et al.6 in theirinitial study corresponded to 525 nm, so they did not explore this higherenergy regime with spherical NCs. In a follow-up study of excitation energydependence in tetradecylphosphonic acid-capped CdSe nanorods, they sawno difference between 400 nm excitation and 510 nm excitation. However,the truncation times observed with NRs are so much shorter (of order 1 s)that it is possible that whenever the new dynamics are introduced by thehigh-energy excitation, they only operate on the longer (∼10 s) timescalewe observe.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.