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Volumn 66, Issue 7, 2002, Pages 753391-753399

Electronic transport in films of colloidal CdSe nanocrystals

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; COLLOID; CRYSTAL STRUCTURE; ELECTRIC CURRENT; ELECTRIC FIELD; ELECTRIC POTENTIAL; ELECTRICITY; ELECTRONICS; FILM; MEASUREMENT; NANOPARTICLE; STEADY STATE; TEMPERATURE DEPENDENCE;

EID: 0037104379     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevB.66.075339     Document Type: Article
Times cited : (145)

References (26)
  • 12
    • 33744603142 scopus 로고    scopus 로고
    • cond-mat/0204614 (unpublished)
    • M. Drndic et al., cond-mat/0204614 (unpublished).
    • Drndic, M.1
  • 13
    • 33744593003 scopus 로고    scopus 로고
    • note
    • Other measurements, made on substrates with circular electrodes, are consistent with those shown here; for these devices, the active area of the film lies inside the outer electrode, and so the similarity of the results confirms this picture.
  • 14
    • 33744612114 scopus 로고    scopus 로고
    • note
    • A stretched exponential decay will always be concave downward on a log-log plot, although with τ, β → 0 the form approaches a straight line. Here we choose a characteristic time of τ = 1 ms, an order of magnitude shorter than our earliest measurement time; longer values of τ would show still more curvature. In the data from the sandwich structures of Ref. 8, typical values of τ were 10-500 s.
  • 15
    • 33744651700 scopus 로고    scopus 로고
    • note
    • sd, this measurement would be sensitive only to charge around the perimeter of the electrode, leading to a correction of less than a factor of 10.
  • 16
    • 33744618553 scopus 로고    scopus 로고
    • note
    • In photoconductivity measurements on similar samples (Ref. 11), photocurrent several orders of magnitude larger than the dark current is observed. The spectral dependence of the photocurrent is the same as the optical absorption of the nanocrystals. In the measurements discussed here, the creation of electron-hole pairs in the nanocrystals apparently makes the CAS sufficiently conducting for the charge to return to ground.
  • 17
    • 0037025709 scopus 로고    scopus 로고
    • W. Woo et al., Adv. Mater. 14, 1068 (2002).
    • (2002) Adv. Mater. , vol.14 , pp. 1068
    • Woo, W.1
  • 18
    • 33744696954 scopus 로고    scopus 로고
    • note
    • sd/L, where L is the sample length, rather than I(t) ∝ E.
  • 19
  • 20
    • 33744589051 scopus 로고    scopus 로고
    • note
    • The exponential dependence of the amplitude of the current transients can be seen for low voltages on the gated substrates in Fig. 6, and is observed for all voltages for measurements on the quartz substrates (Ref. 12).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.