FIB CH3NH3PbBr3 Nanoscale Patterning features "Improved nanoscale patterning using aniodine or xenon difluoride gas"


"A technique developed by scientists at KAUST has made more controlled fabrication of optoelectronic devices produced from a hybrid of organic and inorganic materials possible."

"Ooi and his colleagues from the University's Photonics Laboratory, the Imaging & Characterization Core Lab and the Solar & Photovoltaics Engineering Research Center have demonstrated a technique that can directly pattern perovskites with features smaller than one micrometer with little surface damage."

Using focused-ion beam etching, a grating was created with a trench width of 120 nm separated by 137 nm.

--------------------- Original article ----------​-----------​​
Enhanced Etching, Surface Damage Recovery, and Submicron Patterning of Hybrid Perovskites using a Chemically Gas-Assisted Focused-Ion Beam for Subwavelength Grating Photonic Applications
Mohd S. Alias, Yang Yang, Tien K. Ng, Ibrahim Dursun, Dong Shi, Makhsud I. Saidaminov, Davide Priante, Osman M. Bakr, Boon S. Ooi
The Journal of Physical Chemistry Letters, 7(1), 137-142 (2016)

DOI: 10.1021/acs.jpclett.5b02558

HDL: 10754/592599