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.
Dependence of the energy-conversion efficiencies of DSSCs dyed with copigmented dyes of pH = 2, 3, and 4 on the caffeine-to-anthocyanin molar ratio cC:cA. The measurements were carried out three days after the preparation of cells under AM 1.5 G illumination (solar simulator).
