We report on the observation of room temperature direct band gap photoluminescence in compressively strained-Ge multiple quantum wells with Ge-rich SiGe barriers. A detailed experimental study of the temperature dependence of the photoluminescence is carried out from 5 K up to room temperature. We find that the direct gap photoluminescence at room temperature is due to the thermal excitation of carriers from L-type to Gamma-type confined states. Room temperature photoluminescence shows that Ge/SiGe multiple quantum wells are promising candidates for efficient light emitting devices monolithically integrated on Si.

Giorgioni, A., Gatti, E., Grilli, E., Chernikov, A., Chatterjee, S., Chrastina, D., et al. (2012). Photoluminescence decay of direct and indirect transitions in Ge/SiGe multiple quantum wells. JOURNAL OF APPLIED PHYSICS, 111, 013501 [10.1063/1.3673271].

Photoluminescence decay of direct and indirect transitions in Ge/SiGe multiple quantum wells

GIORGIONI, ANNA;GATTI, ELEONORA;GRILLI, EMANUELE ENRICO;GUZZI, MARIO
2012

Abstract

We report on the observation of room temperature direct band gap photoluminescence in compressively strained-Ge multiple quantum wells with Ge-rich SiGe barriers. A detailed experimental study of the temperature dependence of the photoluminescence is carried out from 5 K up to room temperature. We find that the direct gap photoluminescence at room temperature is due to the thermal excitation of carriers from L-type to Gamma-type confined states. Room temperature photoluminescence shows that Ge/SiGe multiple quantum wells are promising candidates for efficient light emitting devices monolithically integrated on Si.
Articolo in rivista - Articolo scientifico
Photoluminescence; quantum wells; Ge
English
2012
111
013501
none
Giorgioni, A., Gatti, E., Grilli, E., Chernikov, A., Chatterjee, S., Chrastina, D., et al. (2012). Photoluminescence decay of direct and indirect transitions in Ge/SiGe multiple quantum wells. JOURNAL OF APPLIED PHYSICS, 111, 013501 [10.1063/1.3673271].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/31534
Citazioni
  • Scopus 26
  • ???jsp.display-item.citation.isi??? 25
Social impact