Temperature-, gate-, and photoinduced conductance of close-packed CdTe nanocrystal films

被引:41
|
作者
Porter, VJ
Mentzel, T
Charpentier, S
Kastner, MA
Bawendi, MG
机构
[1] MIT, Ctr Mat Sci & Engn, Cambridge, MA 02139 USA
[2] MIT, Dept Chem, Cambridge, MA 02139 USA
[3] MIT, Dept Phys, Cambridge, MA 02139 USA
关键词
D O I
10.1103/PhysRevB.73.155303
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We measure the conductance of close-packed films of CdTe nanocrystals in field-effect structures in the dark and in the presence of light. We find that the majority carriers are holes, that they are injected from gold electrodes into the CdTe nanocrystal films, and that the hole density can be modulated with gate voltage. Secondary photocurrents have a photoconductive gain of similar to 10 at 10(6) V/cm showing that the hole mobility is higher than the electron mobility. A single phenomenological description of the field dependence of the hole mobility can explain the dependence of current on source-drain voltage for both dark and light currents.
引用
收藏
页数:9
相关论文
共 50 条
  • [1] Energy transfer in close-packed PbS nanocrystal films
    Rinnerbauer, V.
    Egelhaaf, H. -J.
    Hingerl, K.
    Zimmer, P.
    Werner, S.
    Warming, T.
    Hoffmann, A.
    Kovalenko, M.
    Heiss, W.
    Hesser, G.
    Schaffler, F.
    PHYSICAL REVIEW B, 2008, 77 (08):
  • [2] Synthesis and characterization of monodisperse nanocrystals and close-packed nanocrystal assemblies
    Murray, CB
    Kagan, CR
    Bawendi, MG
    ANNUAL REVIEW OF MATERIALS SCIENCE, 2000, 30 : 545 - 610
  • [3] Impact of surface ligands on the photocurrent enhancement due to multiple exciton generation in close-packed nanocrystal thin films
    Ono, Masashi
    Nishihara, Taishi
    Ihara, Toshiyuki
    Kikuchi, Makoto
    Tanaka, Atsushi
    Suzuki, Masayuki
    Kanemitsu, Yoshihiko
    CHEMICAL SCIENCE, 2014, 5 (07) : 2696 - 2701
  • [4] UV-blue photoluminescence from close-packed SiC nanocrystal film
    Fan, J. Y.
    Li, H. X.
    Wang, Q. J.
    Dai, D. J.
    Chu, P. K.
    APPLIED PHYSICS LETTERS, 2011, 98 (08)
  • [5] COHESIVE ENERGY AND DEBYE TEMPERATURE OF CLOSE-PACKED METALS
    MULIMANI, BG
    PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1972, 52 (01): : K49 - &
  • [6] TEMPERATURE DEPENDENT VISCOUS DRAG IN CLOSE-PACKED METALS
    VREELAND, T
    JASSBY, KM
    MATERIALS SCIENCE AND ENGINEERING, 1971, 7 (02): : 95 - &
  • [7] Femtosecond transient absorption dynamics of close-packed gold nanocrystal monolayer arrays
    Eah, SK
    Jaeger, HM
    Scherer, NF
    Lin, XM
    Wiederrecht, GP
    CHEMICAL PHYSICS LETTERS, 2004, 386 (4-6) : 390 - 395
  • [8] Close-Packed Gold-Nanocrystal Assemblies Deposited with Complete Selectivity into Lithographic Trenches
    Ahmed, S.
    Ryan, Kevin M.
    ADVANCED MATERIALS, 2008, 20 (24) : 4745 - +
  • [9] Close-packed block copolymer micelles induced by temperature quenching
    Chen, Liwen
    Lee, Han Seung
    Lee, Sangwoo
    PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2018, 115 (28) : 7218 - 7223
  • [10] MONOVACANCY FORMATION ENERGY AND DEBYE TEMPERATURE OF CLOSE-PACKED METALS
    MUKHERJEE, K
    PHILOSOPHICAL MAGAZINE, 1965, 12 (119) : 915 - +