Microfluidic synthesis of monodisperse and size-tunable CsPbBr 3 supraparticles.

The highly controlled, microfluidic template-assisted self-assembly of CsPbBr 3 nanocrystals into spherical supraparticles is presented, achieving precise control over average supraparticle size through the variation of nanocrystal concentration and droplet size; thus facilitating the synthesis of highly monodisperse, sub-micron supraparticles (with diameters between 280 and 700 nm).