메뉴 건너뛰기




Volumn 107, Issue 6, 2003, Pages 1370-1375

Particle size and crystallinity dependent electron injection in fluorescein 27-sensitized TiO2 films

Author keywords

[No Author keywords available]

Indexed keywords

CRYSTALLINE MATERIALS; ELECTROCHEMISTRY; ELECTRON ENERGY LEVELS; FILM PREPARATION; INTERFACES (MATERIALS); NANOSTRUCTURED MATERIALS; OPTICAL PROPERTIES; PARTICLE SIZE ANALYSIS; THERMAL EFFECTS; TRANSMISSION ELECTRON MICROSCOPY;

EID: 0037434729     PISSN: 10895647     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp026442+     Document Type: Article
Times cited : (105)

References (35)
  • 4
    • 0035891138 scopus 로고    scopus 로고
    • Grätzel, M. Nature 2001, 414, 338-344.
    • (2001) Nature , vol.414 , pp. 338-344
    • Grätzel, M.1
  • 5
    • 84955347260 scopus 로고    scopus 로고
    • Solar energy conversion
    • Balzani, V., Gould, I., Eds.; Wiley-VCH: Weinheim
    • Grätzel, M.; Moser, J.-E. Solar Energy Conversion. In Electron Transfer in Chemistry; Balzani, V., Gould, I., Eds.; Wiley-VCH: Weinheim, 2001; Vol. V, pp 589-644.
    • (2001) Electron Transfer in Chemistry , vol.5 , pp. 589-644
    • Grätzel, M.1    Moser, J.-E.2
  • 13
    • 0013405968 scopus 로고    scopus 로고
    • note
    • Two xanthene dyes, fluorescein 27 and Disodium fluorescein (Uranin), were investigated in our laboratory.
  • 16
    • 0013358580 scopus 로고    scopus 로고
    • note
    • 2 colloidal solutions was chosen to be 2.8. At this pH the dye is in predominantly neutral form; see ref 12 and references therein. In lack of optimum pH for chemisorption the concentration of the nonadsorbed dye is significant. The absorption of the different ionic forms of the dye contribute to the steady-state absorption spectrum rather than a charge-transfer absorption band did appear.
  • 18
    • 0013358282 scopus 로고    scopus 로고
    • note
    • 2 is not instantaneous and proceeds on the femtosecond and picosecond time scales. The authors of ref 15 do not have the time resolution to observe direct injection in the investigated systems; neither do they have any other proof to claim that this process occurs. The observed positive feature (above 550 nm) is most likely originating not only from the absorption of the electrons injected in the conduction band. Their absorption yields a much smaller transient signal in the spectral region in question; the authors of ref 15 do not compare the extinction coefficient of the absorbing species with the values given in the literature.
  • 23
    • 0013355922 scopus 로고    scopus 로고
    • note
    • 2 system is ∼80 fs.
  • 30
    • 0013357679 scopus 로고    scopus 로고
    • note
    • No part of the curves in Figure 3, and not the difference between the two spectra, can be fitted to the scattering law.
  • 31
    • 0013457889 scopus 로고    scopus 로고
    • note
    • 2 particles.
  • 34
    • 0013410160 scopus 로고    scopus 로고
    • note
    • 2 particle films with higher concentration of defects is slower: Benkö et al. Unpublished result.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.