discovered that the output current of their new multijunction solar cell
decreased slightly on the designed focal plane of the lens.
Johlin et al., "A 2-terminal perovskite/silicon multijunction solar cell
enabled by a silicon tunnel junction," Applied Physics Letters, vol.
Introduction of tunnel junctions between subcells is the way of monolithically building a multijunction solar cell
. These tunnel junctions must cause minimum losses of the conversion efficiency.
Considering the multijunction solar cell
response, we are only interested in wavelength range of 350-1750 nm .
Hinzer, "Tunnel-junction-limited multijunction solar cell
performance over concentration," IEEE Journal of Selected Topics in Quantum Electronics, vol.
 and Cotal and Frost  who developed a theoretical thermal model for predicting the temperature of a multijunction solar cell
based on passive cooling systems.
Enhancement of the device performance in multijunction solar cell
compared the single junction one, the materials are selected in such a way to utilize the solar spectrum as well as to avoid the energy loss in a solar cell.
The interface phenomena may affect the charge carrier transport in the Ge subcell as well as in the whole multijunction solar cell
High conversion efficiency is very important for solar cells, and the multijunction solar cell
is a very promising approach from the point of view of high performance.
Hinzer, "The effects of absorption and recombination on quantum dot multijunction solar cell
efficiency," IEEE Journal of Photovoltaics, vol.
However, a single step wet-etch for MJSC has not been reported yet since the different etch selectivities of the various III-V layers building up the multijunction solar cell
structure add complexity to this process.
The goal of the project is to bring to fruition at the industrial scale a validated high efficiency module-level innovation, based on a disruptive planar optical micro-tracking technology, which concentrates sunlight on multijunction solar cells
, mounted on top of a conventional silicon backplate.