Semiconductor luminescent device having organic/inorganic juncti

Details Semiconductor luminescent device having organic/inorganic juncti Semiconductor luminescent device having organic/inorganic juncti

1991-03-13

1992-04-14

Mintel, William

357 8, 357 16, 357 12, H01L 3300

Patent

active

051052334

ABSTRACT:
A semiconductor luminescent device having a structure in which an organic layer is sandwiched between first and second electrodes and having an organic/inorganic junction in which at least the first electrode of the first and second electrodes consists of an n-type inorganic semiconductor. A junction between the first electrode and the organic layer forms a blocking contact against electron injection from the first electrode into the organic layer and hole injection from the organic layer into the first electrode. A junction between the second electrode and the organic layer facilitates injection of holes from the second electrode into the organic layer. An electric double layer is formed in the junction portion between the organic layer and the first electrode when a voltage positive with respect to the first electrode is applied to the second electrode, thereby causing tunnel injection of carriers between the first electrode and the organic layer to obtain recombination luminescence in at least one of the first electrode and the organic layer.

REFERENCES:
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patent: 4907043 (1990-03-01), Uekita et al.
patent: 5006915 (1991-04-01), Yoshikawa et al.
Hayashi et al., "Electroluminescence of Perylene Films with a Conducting Polymer as an Anode", Japanese Journal of Applied Physics, vol. 25, No. 9, Sep. 1986, pp. L773-L775.
"Electroluminescence in Organic Films with Three-Layer Structure", Japanese Journal of Applied Physics, vol. 27, No. 2, Feb. 1988, pp. L269-L271, Adachi et al.
Tang et al., "Organic Electroluminescent Diodes," Appl. Phys. Lett. 51 (12), Sep. 21, 1987, pp. 913-915.
Forrest et al., "Organic-on-Inorganic Semiconductor Contact Barrier Diodes, I, Theory with Applications to Organic Thin Films and Prototype Devices," J. Appl. Physics 55 (6), 15 Mar. 1984, pp. 1492-1507.

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