Perovskite-based materials, with the general formula of ABX3 (where A is a cation, B a divalent metal ion, and X a halide), are a class of semiconductor materials showing tunable band gap, high absorption coefficient, broad absorption spectrum, high charge carrier mobility and high values of the charge carrier diffusion lengths. These unique optoelectronic properties makes perovskite as one of the most promising materials for thin film photovoltaics, reaching a power conversion efficiency above 22% with a single junction configuration, and for the fabrication of light-emitting diodes, photo-detectors and lasers. Additionally, perovskite is characterized by a mixed ionic-electronic conduction. As an example a bipolar resistive switching behaviour, caused by the formation and subsequent interruption of conducting pathways due to ion migration, has been observed in a perovskite memory device. The strong interaction between the ion movement and the electron transport enables the use of perovskite as a new electrode material for the fabrication of efficient energy storage systems. Perovskite oxides, due to their unique tunability in composition, shape and, functionalities, can be used as efficient and stable oxygen catalysts in metal–air batteries or as electrode materials in supercapacitors. This presentation will provide an overview of the applications of perovskites in energy-related applications and in electronics, focusing on the correlation between the crystal defects and the device performances.
Recent advances of perovskite materials in energy-related and electronic applications
H. C. Neitzert;
2019-01-01
Abstract
Perovskite-based materials, with the general formula of ABX3 (where A is a cation, B a divalent metal ion, and X a halide), are a class of semiconductor materials showing tunable band gap, high absorption coefficient, broad absorption spectrum, high charge carrier mobility and high values of the charge carrier diffusion lengths. These unique optoelectronic properties makes perovskite as one of the most promising materials for thin film photovoltaics, reaching a power conversion efficiency above 22% with a single junction configuration, and for the fabrication of light-emitting diodes, photo-detectors and lasers. Additionally, perovskite is characterized by a mixed ionic-electronic conduction. As an example a bipolar resistive switching behaviour, caused by the formation and subsequent interruption of conducting pathways due to ion migration, has been observed in a perovskite memory device. The strong interaction between the ion movement and the electron transport enables the use of perovskite as a new electrode material for the fabrication of efficient energy storage systems. Perovskite oxides, due to their unique tunability in composition, shape and, functionalities, can be used as efficient and stable oxygen catalysts in metal–air batteries or as electrode materials in supercapacitors. This presentation will provide an overview of the applications of perovskites in energy-related applications and in electronics, focusing on the correlation between the crystal defects and the device performances.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
