Light-emitting Device Based on Nanocrystals with Integrated High-speed Modulation

The invention relates to a method and a device which can be used to modulate an electrically excited light source according to an electric signal and which can be used for silicon photonics. The device includes a field-effect transistor having a dielectric gate means with embedded dopants and nanocrystals. The device is provided with first means for injecting charges and exciting the nanocrystals producing excitons and second means for injecting charges into the dielectric responding to a second electric signal, said means operating such that the second means can modulate the light emission according to the electric signal applied. The device is particularly useful in that it includes the light source and the modulator and operates at very high frequencies.

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WO 2009080855.jpg

WO 2,009,080,855


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