Chiral host electronically passes light's handedness status for dopant to encode, which along with 0s and 1s potentially doubles bandwidth
https://www.eurekalert.org/news-releases/1125863 "most chiral perovskite semiconductors, having large bandgap, only respond to UV, overcome teaching to see visible light by pairing with non-chiral dopant molecule F4TCNQ excellent at accepting electrons... polarized light eliminates glare/ facilitates biological marker identification/ enables encryption... charge transfer state... preserves spin information even when using visible light... less heat/ lower power than silicon... consumer electronics, fiber optics, solar cells, orbitronics, sensors, secure communications"