Field effect transistors with organic semiconductor layers assembled from aqueous colloidal nanocomposites

被引:13
作者
Dionigi, Chiara
Stoliar, Pablo
Porzio, William
Destri, Silvia
Cavallini, Massimiliano
Bilotti, Ivano
Brillante, Aldo
Biscarini, Fabio
机构
[1] CNR, Ist Studio Mat Nanostrutt, I-40129 Bologna, Italy
[2] CNR, Ist Studio Macromol, I-20133 Milan, Italy
[3] Univ Bologna, Dipartimento Chim Fis & Inorgan, I-40136 Bologna, Italy
[4] Univ Bologna, INSTM, I-40136 Bologna, Italy
关键词
D O I
10.1021/la062371k
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We demonstrate field effect transistors based on organic semiconductor molecules dispersed in a self-organized polystyrene (PS) latex bead matrix. An aqueous colloidal composite made of PS and tetrahexylsexithiophene (H4T6) is deposited with a micropipet into the channel of a bottom-contact field effect transistor. The beads self-organize into a network whose characteristic distances are governed by their packing. The semiconductor molecules crystallize in the interstitial voids, leading to the growth of large interconnected domains. Depending on the bead size and the ratio between H4T6 and PS, the fraction of the different phases in the polymorph can be controlled. In the transistors where the H4T6 metastable "red phase" is the largest, the device response and the charge mobility are comparable to those of sexithienyl thin films grown by high-vacuum sublimation.
引用
收藏
页码:2030 / 2036
页数:7
相关论文
共 40 条
  • [1] ALIK M, 2003, ADV MATER, V15, P917
  • [2] Borghesi A, 1998, ADV MATER, V10, P931, DOI 10.1002/(SICI)1521-4095(199808)10:12<931::AID-ADMA931>3.0.CO
  • [3] 2-#
  • [4] Structural characterization of tetrahexyl sexithiophene ordered films grown by organic molecular beam deposition
    Botta, C
    Destri, S
    Porzio, W
    Sassella, A
    Borghesi, A
    Tubino, R
    [J]. OPTICAL MATERIALS, 1999, 12 (2-3) : 301 - 305
  • [5] Optical properties and photoluminescence of tetrahexyl-sexithiophene allotropes
    Botta, C
    Destri, S
    Porzio, W
    Bongiovanni, G
    Loi, MA
    Mura, A
    Tubino, R
    [J]. SYNTHETIC METALS, 2001, 122 (02) : 395 - 399
  • [6] Characterization of phase purity in organic semiconductors by lattice-phonon confocal Raman mapping: Application to pentacene
    Brillante, A
    Bilotti, I
    Della Valle, RG
    Venuti, E
    Masino, M
    Girlando, A
    [J]. ADVANCED MATERIALS, 2005, 17 (21) : 2549 - +
  • [7] Field-effect transistors made from solution-processed organic semiconductors
    Brown, AR
    Jarrett, CP
    deLeeuw, DM
    Matters, M
    [J]. SYNTHETIC METALS, 1997, 88 (01) : 37 - 55
  • [8] Caruso F, 2001, ADV MATER, V13, P11, DOI 10.1002/1521-4095(200101)13:1<11::AID-ADMA11>3.0.CO
  • [9] 2-N
  • [10] Electrostatic self-assembly of silica nanoparticle -: Polyelectrolyte multilayers on polystyrene latex particles
    Caruso, F
    Lichtenfeld, H
    Giersig, M
    Möhwald, H
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (33) : 8523 - 8524