Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(Above) Selection of the hybrid organic–inorganic perovskite structures. Tin atoms are shown in yellow, fluorine atoms in green, nitrogen atoms in blue, carbon atoms in gray, and hydrogen atoms in white. Below: The learning curves for the mixed and HOIP data sets. For each point, the percentage root-mean-square error is averaged across 10 randomly selected validation sets, each containing 20 structures; the error bars indicate the standard error in the mean.
