| abstract |
A reverse mode light valve, the manufacture of a light control device and a method of controlling light transmittance by using of the reverse mode light valve, the reverse mode light valve containing ABX 3 perovskite particles (200) suspended in a liquid suspension (300) can control light transmittance in a higher light transmittance when the power is turned off (OFF state) and lower light transmittance when the power is turned on (ON state). In the ABX 3 perovskite particles (200), A is at least one of Cs + , CH 3 NH 3 + , and Rb + , B is at least one of Pb 2+ , Ge 2+ , and Sn 2+ , and X is at least one of Cl − , Br − , and I − . |