Cyrium Technologies Incorporated

Bruno J Riel

Simon Fafard

Norbert Puetz

A solar cell with spaced apart groupings of self-assembled quantum dot layers interposed with barrier layers. Such groupings allow improved control over the growth front quality of the solar cell, the crystalline structure of the solar cell, and on the performance metrics of the solar cell.

Solar cell with epitaxially grown quantum dot material

A multi junction solar cell having epitaxially-deposited III/V compounds on vicinal group IV substrates and method for making same. The solar cell includes an AlAs nucleating layer on a Ge substrate. The group IV substrate contains a p-n junction whose change of characteristics during epitaxial growth of As-containing layers is minimized by the AlAs nucleating layer. The AlAs nucleating layer provides improved morphology of the solar cell and a means to control the position of a p-n junction near the surface of the group IV substrate through diffusion of As and/or P and near the bottom of the III/V structure through minimized diffusion of the group IV element.

Method of fabricating semiconductor devices on a group IV substrate with controlled interface properties and diffusion tails

Electronic and opto-electronic devices having epitaxially-deposited III/V compounds on vicinal group IV substrates and method for making same. The devices include an AlAs nucleating layer on a Ge substrate. The group IV substrate contains a p-n junction whose change of characteristics during epitaxial growth of As-containing layers is minimized by the AlAs nucleating layer. The AlAs nucleating layer provides improved morphology of the devices and a means to control the position of a p-n junction near the surface of the group IV substrate through diffusion of As and/or P and near the bottom of the III/V structure through minimized diffusion of the group IV element.

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Ottawa, Canada

Bruno J Riel