3rd generation photovoltaics will further revolutionize the field of energy enabling a distributed energy harvesting. To achieve this goal, new low-cost, high-efficiency and robust materials are needed. Halide perovskites are key materials that attracted significant attention over the last 5-10 years thanks to their high efficiency: > 23% of the harvested light is converted in electric current in the best perovskite solar cells. To further enhance the efficiency, reliability and stability of perovskite solar cells several shortcomings must be solved, one being the relatively poor electron extraction at the TiO2/perovskite contact in planar solar cells, which are simpler to fabricate and thus commercially more promising. One of the strategies recently proposed to address this issue is the introduction of a layer of ionic liquids between the TiO2 and perovskite films. The objective of the PROVING-IL project is to use advanced simulation techniques to understand the microstructure and electronic transport properties of the TiO2/ionic liquid/perovskite heterostructure that lead to the sizable enhancement of performance measured in experiments. The final objective of the PROVING-IL project is to identify design principles to optimize the chemical composition of ionic liquids that can bring to the fabrication of high-performance planar perovskite solar cells.
PROVING-IL: PeROVskite Interface eNgineerinG with Ionic Liquids
Meloni Simone
Primo
Conceptualization
2019
Abstract
3rd generation photovoltaics will further revolutionize the field of energy enabling a distributed energy harvesting. To achieve this goal, new low-cost, high-efficiency and robust materials are needed. Halide perovskites are key materials that attracted significant attention over the last 5-10 years thanks to their high efficiency: > 23% of the harvested light is converted in electric current in the best perovskite solar cells. To further enhance the efficiency, reliability and stability of perovskite solar cells several shortcomings must be solved, one being the relatively poor electron extraction at the TiO2/perovskite contact in planar solar cells, which are simpler to fabricate and thus commercially more promising. One of the strategies recently proposed to address this issue is the introduction of a layer of ionic liquids between the TiO2 and perovskite films. The objective of the PROVING-IL project is to use advanced simulation techniques to understand the microstructure and electronic transport properties of the TiO2/ionic liquid/perovskite heterostructure that lead to the sizable enhancement of performance measured in experiments. The final objective of the PROVING-IL project is to identify design principles to optimize the chemical composition of ionic liquids that can bring to the fabrication of high-performance planar perovskite solar cells.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
