MULTIJUNCTION SOLAR CELLS
Commercially manufactured single junction silicon solar cells are quickly approaching the maximum PCE reached in laboratories. By stacking absorber layers of decreasing band gap on top of a silicon substrate to form a multijunction cell, a new theoretical PCE limit can be attained. Our team is looking to leverage UNSW's long standing expertise with silicon to integrate III-V semi-conductor compounds and other materials into these multijunction cells. This is an exciting area of research with multiple avenues to innovate and push the design of silicon based solar cells to bigger heights. These range from attempting to lower the amount of silicon needed as a substrate, to searching for novel materials to insolate the cell at the back contact.
The main multijunction topics currently covered are:
Perovskite - Silicon Cells
Chalcogenide - Silicon Cells
III - V Compound - Silicon Cells
RESEARCH GALLERY
 XRD 2θ-Ω diffraction profiles of Ge/Al/Si samples |  Raman spectra of Ge/Al/Si samples treated by laser |  Characterization of the cross-sectional structure 400 J/cm2 laser treated sample |
|---|---|---|
 Characterization of the cross-sectional structures of 100 nm Ge on 4 nm SOI sample |  Raman spectra and bright-field cross-sectional TEM images of 100 and 150 nm Ge on SOI after laser tr |  Continuous-wave (CW) diode laser and magnetron sputtering for fabricating low-defect single-crystall |
 Cross-sectional TEM images and (d) Raman spectra of Ge samples with different thicknesses |