A team of researchers affiliated with a large number of institutions in China has realized direct lithography of composition-tunable perovskite nanocrystals inside of glass. In their paper published in the journal Science, the group describes their experiments that involved direct lithography of colored perovskite nanocrystals (PNCs) resulting in desired patterns.
Credit: LU Shaoqing Perovskites are a type of mineral that has certain desirable characteristics, such as optical properties that make them useful for the creation of fuel cells and electronic devices, such as cathodes and LEDs. But, as the researchers note, processing the minerals typically involves the use of special solutions, which they further note leads to low structural stability. They also note that recent prior work with incorporating NCs into glass has been used to gain photonic functionality from the minerals but it has been challenging to pull off. In this new effort, the researchers have developed a new approach—using ultrafast laser pulses to conduct 3D direct lithography of composition-tunable perovskite NCs. In their approach, a laser was used to heat the…