Spectral Response of a monolithic triple junction space solar cell at low and high temperatures

In this paper spectral response measurements at low intensity and low - high cell temperature ranging from -160°C (113 K) and +197°C (470 K) on a monolithic lattice-matched triple junction GaAs solar cell are presented. Apart from the present SR measurement set-up utilized at SPASOLAB for ambient cell temperature, a cryostat chamber has been built up to set the temperature of the testing cell device to this low-high temperature range. Results in units of external quantum efficiency of each subcell of this triple junction cell are given and compared with available information of previous studies. This system up-grading forms part of the Aurora-ExoMars program by the European Space Agency (ESA).