In this work we report on the morphological and optical properties of low-density self-assembled InGaAs quantum dots (QDs), suitable for quantum communication applications. The QDs are grown directly into a GaAs matrix by Stranski-Krastanov metal organic chemical vapour deposition, and emit at 1300 nm at room-temperature. We have studied the influence of the deposition rate on the morphological properties of the dots in order to obtain reproducible low-density samples. After the optimization of the growth conditions, we have fabricated, processed and preliminarily characterized a QD light-emitting diode, operating at 1300 nm, based on QDs with a density as low as 10<sup>9</sup> cm<sup>-2</sup>.
Low density self-assembled InGaAs QDs grown directly in a GaAs matrix for quantum-communication applications at 1300 nm wavelength
MT Todaro;V Tasco;M De Giorgi;M De Vittorio;A Passaseo;F Romanato;E di Fabrizio
2003
Abstract
In this work we report on the morphological and optical properties of low-density self-assembled InGaAs quantum dots (QDs), suitable for quantum communication applications. The QDs are grown directly into a GaAs matrix by Stranski-Krastanov metal organic chemical vapour deposition, and emit at 1300 nm at room-temperature. We have studied the influence of the deposition rate on the morphological properties of the dots in order to obtain reproducible low-density samples. After the optimization of the growth conditions, we have fabricated, processed and preliminarily characterized a QD light-emitting diode, operating at 1300 nm, based on QDs with a density as low as 109 cm-2.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.