TITLE

Switchable organic electroluminescence

AUTHOR(S)
Gao, Xi-Cun; Zou, De-Chun; Fujita, Katsuhiko; Tsutsui, Tetsuo
PUB. DATE
December 2002
SOURCE
Applied Physics Letters;12/9/2002, Vol. 81 Issue 24, p4508
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The vacuum deposited amorphous organic thin film melamine cyanurate (MC) is found to possess an electrical switching property. The as-fabricated fresh thin film is at a semiconductor state and shows a rectification property in a range of several voltages. Under a higher applied voltage, the resistance of the film changes to a lower value, and shows linearity in its current-voltage relationship. After the application of a negative driving voltage for no more than 100 s, the MC film returns from the resistor state to the semiconductor state with a higher impedance. Based on this reproducible switching phenomenon, a type of voltage-controlled switchable organic electroluminescence device was fabricated by inserting the MC layer between the anode indium tin oxide (ITO) and the hole transport layer N,N'-bis (3-methylphenyl)-N,N'-diphenyl-benzidine (TPD). In the forward driving voltage scan (for example, increasing the driving voltage from 0 to 16 V), the impedance is higher and the current density is lower; then the scan is backward (decreasing the driving voltage from 16 to 0 V), the impedance becomes lower and the current density becomes higher. Corresponding to the two different current density states at the same driving voltage, the device luminance also reaches two different states, one is lower and another is higher. This transition from a high (ON) to low luminance (OFF) renders a prototype to realize a switchable organic electroluminescence.
ACCESSION #
8633306

 

Related Articles

  • Effect of Doping with Nitrogen on Electrical Properties and Erbium Electroluminescence of a-Si:H(Er) Films. Kon�kov, O. I.; Terukov, E. I.; Granitsyna, L. S. // Semiconductors;Oct2001, Vol. 35 Issue 10, p1197 

    The effect of nitrogen doping on the electrical and electroluminescence properties of amorphous hydrogenated silicon films doped with erbium has been studied. The parameters of the material, the characteristics of structures on its base, and the efficiency of Er electroluminescence (? = 1.54...

  • Switch-off relaxation of the parameters of ZnS:Mn thin-film electroluminescent emitters. Gurin, N.; Sabitov, O. // Technical Physics Letters;Apr2008, Vol. 34 Issue 4, p278 

    We have experimentally studied the decay of a current transferred via a phosphor layer in ZnS:Mn thin-film electroluminescent emitters. It is established that this decay is controlled by a bimolecular process of electron trapping on the surface states at the anode phosphor-insulator interface....

  • Optoelectronic logical gates "AND", "OR" and "NOT". Porada, Zbigniew; Schabowska-Osiowska, Elzbieta // Active & Passive Electronic Components;Jun2004, Vol. 27 Issue 2, p95 

    Optoelectronic AND, OR and NOT logical gates were composed of thin film photoconducting and electroluminescent elements, made of cadmium sulphide and zinc sulphide, respectively, doped with copper, chlorine and manganese. The gates consisted of several photoconducting elements and one...

  • Modulation-doped ZnSe:Mn dc thin-film electroluminescent devices. Kobayashi, Masakazu; Mino, Naoki; Inuzuka, Hajime; Konagai, Makoto; Takahashi, Kiyoshi // Journal of Applied Physics;5/15/1985, Vol. 57 Issue 10, p4706 

    Examines the active region in the ZnSe:Mn layer by modulation doping of ZnSe:Mn dc thin-film electroluminescent devices. Information on the modulation-doped ZnSe:Mn electroluminescent cells; Discussion of findings; Conclusion.

  • Tentative anatomy of ZnS-type electroluminescence. Bringuier, E. // Journal of Applied Physics;5/1/1994, Vol. 75 Issue 9, p4291 

    Reviews the electrical and optical mechanisms at work in sulfide-based thin-film electroluminescence display devices within the framework of general semiconductor physics. Direct-current conduction properties of zinc sulfide films; Comparison of direct current- and alternating current-coupled...

  • Optimization of Thin Polyvinylcarbazole Spin Coated Films Applicable in Organic Based Devices. Mladenova, Daniela Lyubenova; Kazacov, Roumen Hristov; Karashanova, Daniela Bogdanova; Milenkov, Viktor Stoychev; Dobreva, Tatyana Stamova; Budurova, Desislava Stojanova; Sinigersky, Vesselin Angelov; Zhivkov, Ivaylo Tzankov // Annual Journal of Electronics;2010, Vol. 4 Issue 1, p104 

    Polyvinylcarbazole (PVK) is organic semiconductor with remarkable photoconductivity and electroluminescence in the visible and UV region. It is apt to crystallize even at low solution concentration. The aim of this study was to establish optimized conditions for spin coating deposition of PVC...

  • Three-color integration on rare-earth-doped GaN electroluminescent thin films. Wang, Y. Q.; Steckl, A. J. // Applied Physics Letters;1/27/2003, Vol. 82 Issue 4, p502 

    We have realized full color integration on rare-earth-doped thin-film electroluminescent (EL) GaN using lateral integration. Tm, Er, and Eu dopants were in situ doped into GaN thin films during growth in order to obtain blue, green, and red emission, respectively. Three color pixel arrays have...

  • Voltage-controlled electroluminescence from SiO[sub 2] films containing Ge nanocrystals and its mechanism. Zhang, J.-Y.; Ye, Y.-H.; Tan, X.-L.; Bao, X.-M. // Applied Physics A: Materials Science & Processing;2000, Vol. 71 Issue 3, p299 

    Abstract. Luminescent SiO[sub 2] films containing Ge nanocrystals are fabricated by using Ge ion implantation, and metaloxide-semiconductor structures employing these films as the active layers show yellow electroluminescence (EL) under both forward and reverse biases. The EL spectra are...

  • Study of field driven electroluminescence in colloidal quantum dot solids. Bozyigit, Deniz; Wood, Vanessa; Shirasaki, Yasuhiro; Bulovic, Vladimir // Journal of Applied Physics;Jun2012, Vol. 111 Issue 11, p113701 

    Semiconductor nanocrystals, or quantum dots (QDs), promise to drive advances in electronic light generation. It was recently shown that long range transport of charge, which is typically required for electric excitation and which is inherently limited in nanosized materials, can be avoided by...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics