TITLE

Organic bistable light-emitting devices

AUTHOR(S)
Ma, Liping; Liu, Jie; Pyo, Seungmoon; Yang, Yang
PUB. DATE
January 2002
SOURCE
Applied Physics Letters;1/21/2002, Vol. 80 Issue 3, p362
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
An organic bistable device, with a unique trilayer structure consisting of organic/metal/organic sandwiched between two outmost metal electrodes, has been invented. [Y. Yang, L. P. Ma, and J. Liu, U.S. Patent Pending, U.S. 01/17206 (2001)]. When the device is biased with voltages beyond a critical value (for example 3 V), the device suddenly switches from a high-impedance state to a low-impedance state, with a difference in injection current of more than 6 orders of magnitude. When the device is switched to the low-impedance state, it remains in that state even when the power is off. (This is called “nonvolatile” phenomenon in memory devices.) The high-impedance state can be recovered by applying a reverse bias; therefore, this bistable device is ideal for memory applications. In order to increase the data read-out rate of this type of memory device, a regular polymer light-emitting diode has been integrated with the organic bistable device, such that it can be read out optically. These features make the organic bistable light-emitting device a promising candidate for several applications, such as digital memories, opto-electronic books, and recordable papers. © 2002 American Institute of Physics.
ACCESSION #
5884266

 

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