Nolwenn Le Biavan, from CHREA-CNRS, and co-workers have just published a paper on Applied Physics Letters entitled "Homoepitaxy of non-polar ZnO/(Zn,Mg)O multi-quantum wells: From a precise growth control to the observation of intersubband transitions". In this work, a method to grow and characterize the state of the art non-polar ZnO/(Zn,Mg)O multi-quantum wells on m-plane ZnO substrates for intersubband action is described. You can find the full text of the article by clicking here.
Top: ISBT absorption spectra from the ZnO/(Zn,Mg)O MQWs with different QW thicknesses. Bottom: Energy of the e2-e1 ISBT as a function of the QW thickness as measured by absorption (red full circles). The Mg and the doping in the QW are kept constant (30% and 1e19 cm3, respectively). The open circles indicate results from the Schrödinger-Poisson model, including exchange correlation effects. The open squares mark the results obtained when the depolarization shift is considered. From Le Biavan et al. Applid Physics Letters vol. 111 article no. 231903 (2017)
