Light emitting devices (LEDs) based on colloidal semiconductor nanocrystals represent a matter of technological interest
for the development of flat panel display and lighting systems. The appealing features of these materials are the high
fluorescence efficiency, narrow ban edge emission, potential chemical stability, and tunable light emission across the
visible spectrum. However the integration of these materials in the very promising PIN technology is still challenging
due to the lack of an appropriate QD deposition technique. So far only wet deposition methods such as spin-coating and
drop-casting have been exploited to realize QD thin film. Moreover QD thermal evaporation is not possible because of
their high molecular weight. In this scenario we developed a dry, simple, and inexpensive deposition technique to
transfer semiconductor QDs on organic semiconductor materials. We exploited this technique to fabricated an
organic/inorganic hybrid red emitting device whit a doped hole transport layer.
Light emitting devices (LEDs) based on colloidal semiconductor nanocrystals represent a matter of technological interest
for the development of flat panel display and lighting systems. The appealing features of these materials are the high
fluorescence efficiency, narrow ban edge emission, potential chemical stability, and tunable light emission across the
visible spectrum. These characteristics open the way to a new class of hybrid devices in which the flexible technology of
organic LEDs can be combined with the long operating lifetime of inorganic semiconductor devices.
In particular over the last few years several hybrid device structures based on colloidal semiconductor quantum dots
(QDs) and organic material have been reported. In this paper we report on recent development in the fabrication of QDLEDs
and in particular in white hybrid LEDs.
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