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Free-standing metal halide perovskite nanowires devices and heterostructures

Freestanding CsPbBr3 nanowires. Left: Cross-sectional SEM of as-grown nanowires. Middle: Cross-sectional optical microscopy (not false colored) of blue-green CsPbCl1.1Br1.9-CsPbBr3 heterostructured nanowires [Zhang 2022]. Single nanowire transistor [Lamers 2022].


We have discovered a method to grow free-standing vertically aligned CsPbBr3 metal halide perovskites [Zhang 2022]. Part of the nanowires can be converted to blue-emitting CsPbCl1.1Br1.9. MHPs are soluble in polar solvents, which makes normal lithography processing schemes difficult to use. However, we have found a method to perform electron beam lithography (EBL) using only non-polar solvents [Lamers 2022].

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