Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV18)
DOI: https://doi.org/10.29363/nanoge.hopv.2018.026
Publication date: 21st February 2018
Hybrid organic-inorganic and fully inorganic lead halide perovskite materials have the potential to revolutionize not only the photovoltaics industry but also lighting technologies. In particular, their nanostructures have energized the lighting communities’ efforts to create devices from earth abundant and inexpensive constituents due to their narrow size distributions as well as their narrow emission line widths, and high photoluminescence quantum yields (PLQY) of over 90%. Recently, fully inorganic perovskite nanocrystals (NCs), such as CsPbX3 (X = Cl, Br, I) NCs, have become particularly interesting for lighting applications due to their higher stability over hybrid organic-inorganic ones and efficient synthesis methods.
Here, we have synthesized fully inorganic CsPbX3 (X = Cl, Br, I) NCs using a hot injection synthesis route. We have characterized their structural, morphological and photophysical properties in detail. We have found that the purification of NCs is very important for the film formation, where we have observed rods and inhomogeneous coverage if no further purification steps were employed after the synthesis. We have implemented these NCs with high PLQYs into light emitting electrochemical cells (LECs), achieving a brightness of 8 cd/m2 for the NCs based on a mixture of bromide and iodide halides at low driving currents. Overall, we believe that fully inorganic perovskite NCs are promising components of lighting devices thanks to their outstanding performance.
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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