ABSTRACT: In this contribution we present the latest results of our experiments regarding the use of aluminum foil as rear side metallization for solar cells with dielectric passivation and laser fired contacts (LFC). In this approach the foil is fixed during the contacting process onto the wafer by local alloying of an IR laser.
Here in this work, a kitchen-grade aluminium foil providing a lightweight, low-cost, mechanically flexible substrate-cum-electrode has been utilized for the very first time in the fabrication of perovskite solar cells.
Conclusion In conclusion, this work highlights the utilization of kitchen-grade aluminium foil as a lightweight and cost-effective substrate-cum-electrode for the fabrication of flexible photovoltaic devices.
The device possesses a high J SC value of 20.18 mA/cm 2 along with a V OC of 0.821 V and FF of 64.19%. The photovoltaic performance of the fabricated devices on Al foil with and without integration of MgF 2 ARC have been studied and are shown in Fig. 6 (a) and the corresponding electrical parameters are given in Table 1.
While effective, the technical implementation of this setup is challenging. Using a black plastic foil as a solar cell mounting chuck shows the lowest contribution to the Isc (<0.05%) of the bifacial Si-based solar cell under STC in the most sensitive spectral range (900–1200 nm) due to the transmission of silicon wafers .
The Mo foil whole substrate as a good conductor directly connects the front and back cells, providing a parallel condition for double sides. Parallel bifacial solar cells are beneficial to improve the utilization of device area by absorbing illuminations in different directions.