论文信息 - Electroluminescence from thin film of a semiconducting oligothiophene deposited in ultrahigh vacuum

Electroluminescence from thin film of a semiconducting oligothiophene deposited in ultrahigh vacuum

Abstract The thin film of a semiconducting oligomer of dimethylsexithiophene (DMSxT) deposited in ultrahigh vacuum has a highly ordered layered structure. We have fabricated the organic light-emitting diodes (LEDs) using DMSxT and carried out electrical and optical measurements. A red-orange emission is clearly observed above 4 V forward bias. These LEDs have a configuration of Al/DMSxT/ITO and show a rectifying ratio of about 1500 at ± 10 V bias. This is the first report of an organic LED using a semiconducting oligomer as a light-emitting layer.

[1] D. Fichou,et al. An all‐organic "soft" thin film transistor with very high carrier mobility , 1990 .

[2] Hiroyuki Sakaki,et al. Field‐effect transistors using alkyl substituted oligothiophenes , 1991 .

[3] Takakazu Yamamoto,et al. Electrochemical and electric properties of vacuum-deposited poly(arylene)s: electrochemical activity, diode, and electroluminescence , 1992 .

[4] R. N. Marks,et al. Light-emitting diodes based on conjugated polymers , 1990, Nature.

[5] Tetsuo Tsutsui,et al. Organic electroluminescent device having a hole conductor as an emitting layer , 1989 .

[6] H. Sakaki,et al. FET characteristics of substituted oligothiophenes with a series of polymerization degrees , 1993 .

[7] C. Tang,et al. Organic Electroluminescent Diodes , 1987 .

[8] Tadashi Kusumoto,et al. Novel structure of organic electroluminescence cells with conjugated oligomers , 1993 .

[9] A. Heeger,et al. Visible light emission from semiconducting polymer diodes , 1991 .

[10] Gilles Horowitz,et al. A field-effect transistor based on conjugated alpha-sexithienyl , 1989 .

[11] S. Hotta,et al. Alkyl-substituted oligothiophenes: crystallographic and spectroscopic studies of neutral and doped forms , 1991 .

[12] Keiro Muro,et al. Visible-Light Electroluminescent Diodes Utilizing Poly(3-alkylthiophene) , 1991 .

[13] C. H. Chen,et al. Electroluminescence of doped organic thin films , 1989 .