Recent advances in perovskite-containing tandem structures

Metal halide perovskite solar cells (PSCs) possess remarkable optoelectronic properties to achieve a high output of photovoltaic systems due to their tunable bandgap, high mobility, low cost, and ease of fabrication. A significant advance in PSC technology is the introduction of multijunction solar cells to compete with dominant silicon (Si)-based solar cells but limited inherently by the Shockley–Queisser limit. A PSC is an ideal candidate to fabricate tandem solar cells due to bandgap tunability between 1.48 and 2.3eV, long-range charge transportation, and high radiative recombination rate to make them more viable for tandem application. This chapter summarizes recent advances in the tandem device landscape with key motivations and the challenges to fabricating such promising architectures. To summarize, the current status of the perovskite/perovskite, perovskite/copper indium gallium selenide, and perovskite/Si tandems, utilizing different device technologies with key challenges and related aspects, is presented.