(a) Photovoltaic (PV) materials
The conversion of solar energy to electrical current using thin film third generation photovoltaics (PV) is being widely explored for the last two decades. Perovskite solar cell technology is a revolutionary third generation photovoltaic system that is taking the renewable energy world on a dizzying ride of new prospects.
Schematic Perovskite solar cell (See Full Size Image)
In recent years, perovskite-based solar cells (PSCs) become the hottest topic in the photovoltaics due to three significant advantages: inexpensive precursors, simple fabrication methods, and remarkably high power conversion efficiency (PCE) values. Typical PSC configuration is composed of an electron transporting material (ETM, anode), infiltrated with the perovskite absorbing material (organic/inorganic light harvester) and coated with a hole transporting material (HTM), which plays an important role to facilitate the transportation of holes from perovskite to the counter electrode.
One of the problems with the typical Perovskite solar cell configurations used is their reliance on an expensive and difficult to manufacture organic hole transport material called "Spiro-MeOTAD" (for short).
Our research group has an interest in developing inexpensive PV materials that include alternative spiro-annulated HTM and perovskite absorbing materials (both organic and inorganic light harvester).
J. Mater. Chem. A, 2016, Advance Article DOI: 10.1039/C6TA09028A