Abstract
The development of perovskite photovoltaics has matured to a point of industry-scale production; however, their operational long-term stability still remains the main obstacle impeding their commercialization. The utilization of solution processable graphene and related two-dimensional materials (GRMs), at different sections of perovskite solar cells represents an effective approach to enhance both the power conversion efficiency and the lifetime stability of such photovoltaic technology. On top of that, their compatibility with large-scale, solution-processable methods such as sheet-to-sheet and roll-to-roll lay the ground for their direct integration in pilot manufacturing lines, significantly improves the capital expenditure of this technology. In this context, a wide range of GRMs have been used as replacements for conventional charge transport layers and interlayers not only to improve the charge dynamics of the devices but also to protect the perovskite layer against diffusion of external agents, such as oxygen and moisture and the metal ion migration.
In this talk, I will give an overview of our recent activities on the realization of highly efficient and stable perovskite solar cells and modules. I will give a holistic insight on how the hierarchical placement of GRMs in all the perovskite device can tune the transport layers work-function, passivate the interface/surface traps and most importantly protect the interfaces, resulting in a simultaneously improvement of the triangle of performance, stability and scalability of the perovskite PVs. Furthermore, I will discuss the implementation of a Solar Farm consisting of GRM enabled perovskite 0.5 sqm panels at the Hellenic Mediterranean University campus at Crete, in which outdoor field tests are currently performed. The latter is a pivotal information on the commercialization potential of this technology. I will also directly correlate the electrical measurements of the solar farm with environmental parameters, while at the same time, benchmark their outdoor performance against commercial PV panels installed at the same site.