viOEC oxygen-evolving complex
PCET proton-coupled electron transfer
PCM phase change storage material
PEC photoelectrochemical
PEM proton exchange membrane
PRD priority research directions
PSI photosystem I
PSII photosystem II
PV photovoltaic
R&D research and development
RC reaction center
TCO transparent conducting oxide
TMS theoretical modeling and simulation
TPV thermophotovoltaic
U.S. United States
UV ultraviolet
XAFS X-ray absorption fine-structure (spectroscopy)
ZT thermoelectric figure of merit
UNITS OF MEASURE
°C degree(s) Celsius
$/kW dollar(s) per kilowatt
μm micrometer(s)
μs microsecond(s)
Å angstrom(s)
amp ampere(s)
Bbl billion barrels
cm centimeter(s)
cm/min centimeter(s) per minute
eV electron volt(s)
fs femtosecond(s)
gal gallon(s)
Gha gigahectare(s)
GJ gigajoule(s)
Gtons gigatons (10^9 tons = 1 billion tons)
GW gigawatt(s) (10^9 W = 1 billion watts)
kg kilogram(s)
kWh kilowatt hour(s)
kWth kilowatt(s) (thermal)