Acronyms and Unit Abbreviations
Acronymns
| ACRONYMS | Meaning |
|---|---|
| a-Si:H | hydrogenated amorphous silicon |
| AM | air mass |
| AMOLED | Active Matrix Organic Light-Emitting Displays |
| AO | All-Optical |
| AOS | All-Optical Switching |
| AOS | All-Optical Signal Processing |
| ASF | Anderson, Schultz, and Flory |
| BOS | balance of system |
| CB | conduction band |
| CHP | combined heat and power |
| COP | coefficient of performance |
| CPV | concentrated photovoltaic |
| dc | direct current |
| DFT | Density functional theory |
| DNI | direct normal irradiation |
| ECL | Electrogenerated chemiluminescence |
| EFG | edge-defined film-fed growth |
| EIA | Energy Information Administration |
| EO | Electro-optic |
| EPV | electrochemical photovoltaic |
| ETL | Electron Injection/Transport Layer |
| HCPV | high-concentration photovoltaic |
| HHV | higher heating value |
| HRS | Hyper-Rayleigh Scattering |
| IR | infrared |
| ITO | indium tin oxide |
| IZO | Indium Zinc Oxide |
| LC | Liquid crystal |
| LE | Luminous Efficiency |
| LH1/LH2 | light-harvesting pigment/protein complexes |
| MBE | molecular beam epitaxy |
| MEG | multiple exciton generation |
| MESP | minimum ethanol selling price |
| MOCVD | metalorganic chemical vapor deposition |
| MZI | Mach-Zehnder Interferometer |
| NAE | National Academy of Engineering |
| Nd:Yag | Neodymium doped Ytrium aluminum garnet- a type of laser |
| NHE | normal hydrogen electrode |
| NIR | Near Infrared |
| NLO | Non-linear optics |
| NRC | National Research Council |
| OEC | oxygen-evolving complex |
| OFET | Organic field effect transistor |
| OLED | organic light emitting diode |
| OPV | organic photovoltaic (solar cell) |
| PCET | proton-coupled electron transfer |
| PC | Photonic crystal |
| PCM | phase change storage material |
| PEC | photoelectrochemical |
| PEM | proton exchange membrane |
| PET | Polyethylene terephthalate |
| PMMA | Polymethylmethacrylate |
| PPV | Polyphenylvinylene |
| PRD | priority research directions |
| PT | polythiophene |
| PV | photovoltaic |
| R&D | research and development |
| RC | reaction center |
| SAML | Self-assembled monolayers |
| SHG | Second Harmonic Generation |
| SLO | Spatial Light Modulation |
| TCO | transparent conducting oxide |
| TCNL | Thermochemical Nanolithography |
| TFT | Thin-Film Transistor |
| THG | Third Harmonic Generation |
| TM | Transverse Mode |
| TMS | theoretical modeling and simulation |
| TPA | Two Photon Absorption |
| TPF | Two Photon Fluoresence |
| TPV | thermophotovoltaic |
| UPS | Ultraviolet photoelectron spectroscopy |
| U.S. | United States |
| UV | ultraviolet |
| WOLED | White organic light-emitting diode |
| XAFS | X-ray absorption fine-structure (spectroscopy) |
| XPS | X-ray photoelectron spectroscopy |
| ZT | thermoelectric figure of merit |
Variables and Constants
Common
| Symbol | Meaning |
|---|---|
| c | speed of light (c = 299,792,458 m/s approx 3 x 106m/s) |
| ν | frequency |
| h | planck's constant (h = 6.62606896x 10-34 J s = 4.135667 x 10-15eV s) |
| λ | wavelength (visible spectrum is 400-700nm) |
Absorption and Emission
| Symbol | Meaning |
|---|---|
| ε | extinction coefficient of a molecule |
| Φ | quantum yield |
| Ψ | wave function |
EO Properties
| Symbol | Meaning |
|---|---|
| μ | dipole moment (mu) measured in debyes |
| α | linear polarizability (alpha) |
| β | first order hyperpolarizability (microscopic) (beta) |
| cos3θ | order parameter |
| δ | Two photo cross section measured in Goppert-Mayer units (GM), with 1 GM=1×10-50 cm4 s molecules−1 photon−1 >100gm is high.) |
| r33 | Electro-optic cofficient (chi 33)(FM= 1000 pm/V) |
| χ2 | second-order nonlinear susceptiblity (first order hyperpolarizability) (macroscopic) |
| χ3 | third-order nonlinear susceptiblity (second order hyperpolarizability) (macroscopic) (alpha)(FM= 6-7 x 10-21(m/V)2) |
| ε | dielectric constant or relative static permittivity |
| M | Transition dipole moment (measured in debyes) |
| N | Number Density parameter |
| φfl | Fluoresence Quantum Yield a ratio of photons absorbed over photons emitted |
| σ | conductivity (measured in S (Siemens)/cm |
| vπ | half-wave driving voltage |
Devices
| Symbol | Meaning |
|---|---|
| α | material loss in dB/cm |
| h | planck's constant (h = 6.62606896x 10-34 J s = 4.135667 x 10-15eV s) |
| Γ | optical electrical overlap |
| d | electrode separation |
Units
| Abbreviation | Unit |
|---|---|
| °C | degree(s) Celsius |
| $/kW | dollar(s) per kilowatt |
| μm | micrometer(s) |
| μs | microsecond(s) |
| Å | angstrom(s) (10-10m) |
| amp | ampere(s) |
| as | attaseconds- one quintillionth of a second |
| Bbl | billion barrels |
| cm | centimeter(s) |
| cm/min | centimeter(s) per minute |
| eV | electron volt(s) |
| fs | femptosecond(s) |
| gal | gallon(s) |
| Gha | gigahectare(s) |
| GJ | gigajoule(s) |
| Gtons | gigatons (109 tons = 1 billion tons) |
| GW | gigawatt(s) (109 W = 1 billion watts) |
| kg | kilogram(s) |
| kWh | kilowatt hour(s) |
| kWth | kilowatt(s) (thermal) |
| K | Kelvin |
| L | liter(s) |
| MHz | megahertz |
| mm | millimeter(s) |
| MW | megawatt(s) (106 W = 1 million watts) |
| MWe | megawatt(s) (electric) |
| MWth | megawatt(s) (thermal) |
| MW/yr | megawatt(s) per year |
| nm | nanometer(s) |
| nm/s | nanometer(s) per second |
| ps | picosecond(s) |
| psi | pound(s) per square inch |
| s | second(s) |
| TW | terawatt(s) (1012 W = 1 trillion watts) |
| W | watt(s) |
| Wp | peak watt(s) |
| yr | year(s) |
Agencies, Programs and Institutions
| ACRONYMS | Meaning |
|---|---|
| DOE | Department of Energy |
| IPCC | Intergovernmental Panel on Climate Change |
| NSDL | National Science Digital Library aka National STEM Distributed Learning |