asteroza + ir + solar   38

Concentrated Solar Photovoltaics provide both electricity and heat.
Last pic has a split hybrid CSP system, with visible spectrum PV with an IR reflector, feeding IR to a fiber line for use elsewhere in a high temp electrolysis cell.
hybrid  CSP  PV  thermal  IR  fiber  optic  transfer  power  generator  solar  high  temperature  electrolysis  hydrogen  gas  production  syngas  CO2  cracking 
march 2019 by asteroza
Plasmonic p–n Junction for Infrared Light to Chemical Energy Conversion - Journal of the American Chemical Society (ACS Publications)
Making hydrogen gas with IR light. Though one wonders where direct conversion with this photocatalyst is better than using a frequency converter intermediary and a different photocatlyst...
japa  hydrogen  production  materials  science  research  technology  IR  cadmium  copper  sulfide  photocatalyst  heterostructure  nanocrystal  surface  plasmon  solar  fuel 
march 2019 by asteroza
Contactless steam generation and superheating under one sun illumination | Nature Communications
Okay, it's cheating to say one sun when using a concentrator, but switch from direct contact heat transfer with capillary flow to IR emitter and vapor passthru is interesting
carbon  foam  solar  heat  absorber  IR  thermal  emitter  steam  generator  passive  materials  science  research  technology 
december 2018 by asteroza
Simultaneously and Synergistically Harvest Energy from the Sun and Outer Space - ScienceDirect
If you can take out the backing metal foil of a PV panel, then line the bottom with a narrow band IR re-emitter that converts rooftop heat to a band that can escape out of the atmospheric IR window, allows roof cooling and power generation simultaneously in theory.
solar  PV  panel  narrowband  IR  emitter  roof  cooling  power  generator  materials  science  research  technology 
november 2018 by asteroza
Radiative cooling of solar absorbers using a visibly transparent photonic crystal thermal blackbody
Uses the IR window reradiation trick to cool an object by cooling towards space, as space is a heatsink.
photonic  crystal  IR  radiative  cooling  surface  coating  materials  science  research  technology  solar  cell  Delicious 
september 2015 by asteroza
Hybrid Molecule–Nanocrystal Photon Upconversion Across the Visible and Near-Infrared - Nano Letters (ACS Publications)
Interesting hybrid organic/inorganic frequency converter, takes 2 IR photons in, upconverts to single higher frequency photon. Not quite a frequency doubler, but possibly still useful. Since you aren't wasting IR inputs
inorganic  nanocrystal  organic  ligand  composite  materials  science  research  technology  IR  infrared  photon  frequency  upconversion  conversion  upgrade  solar  PV  Delicious 
august 2015 by asteroza
Passive radiative cooling below ambient air temperature under direct sunlight : Nature : Nature Publishing Group
Interesting mixed material which re-emits heat at atmospheric IR transparency windows, effectively becoming a passive cooler. So an external radiator on earth covered with this paint can get pretty cool.
photonic  radiative  cooling  solar  radiator  mirror  selective  thermal  emitter  materials  science  research  technology  passive  hafnium  silicon  dioxide  tuned  cooler  nanoparticle  layer  IR  infrared  transparency  window  atmospheric  green  paint  surface  treatment  Delicious 
december 2014 by asteroza
Light Harvesting: Near-Infrared Harvesting Transparent Luminescent Solar Concentrators (Advanced Optical Materials 7/2014) - Zhao - 2014 - Advanced Optical Materials - Wiley Online Library
So collects and redirects NIR to the pane edge,where it can be converted to other wavelengths (regular IR) for a solar power generator to consume. Does near infrared now, seems possible to also to UV as well.
transparent  luminescent  edge  concentrator  solar  collector  optics  materials  science  research  technology  near  infrared  NIR  IR  organic  molecule  Delicious 
august 2014 by asteroza
Seven Next-Generation Energy Technologies Showcased by ARPA-E | MIT Technology Review
Assorted ARPA-E projects. Georgia Tech's thermal updraft turbine, ostensibly to take advantage of dust devil conditions, is probably more suited as a wind turbine for solar updraft towers. The UV/IR specific transparent solar cell tech for windows is interesting too.
wind  technology  thermal  turbine  cell  IR  solar  research  ARPA-E  science  materials  updraft  power  generator  UV  Delicious 
march 2013 by asteroza
Nanoscale Research Letters | Full text | Tailoring photonic metamaterial resonances for thermal radiation
This seems to use the same kind of tricks as those luminescent solar concentrator plates, that internally reflect captured light and convert the frequency internally to retransmit to edge PV modules. Just shifting down to IR. The interesting bit is the prevention of reradiation through the top surface, which provides the potential for solar thermal power generation without concentrating mirrors using not well aligned surfaces of panels manufactured using chip fabrication techniques.
TPV  selective  absorber  photonic  metamaterial  resonance  crystal  thermal  emission  radiation  reradiation  solar  IR  concentrating  thermophotovoltaic  materials  science  research  technology  nanotechnology  optics  Delicious 
december 2011 by asteroza
SSI2010SSPpaper.pdf (application/pdf Object)
Interesting concept for an SPS using a thin film solar cell array operating as a spin stabilized panel, similar to a solar sail. Uses IR power transmission, probably laser based. Unfortunately, the setup for the laser is not ideal, as it would have to have the laser at the rotating center, requiring either a big central power yoke/gymbal with slip ring, or fixed lasers near the center with active beam steering. Actually fixed lasers with that recently developed polarized grating liquid crystal laser beam steering mechanism might work well here since it's solid state.
SPS  SSP  SBSP  space  solar  power  satellite  design  concept  heliogyro  spin  stabilized  electric  sail  laser  IR  beaming  Delicious 
november 2011 by asteroza
New PV Cell Generates Electricity From UV, Visible, Infrared Lights -- Tech-On!
New single junction wide spectrum solar cell using manganese doped gallium nitride. Low efficiency but high voltage, room for improvement.
japan  solar  cell  power  generator  materials  science  UV  visible  IR  light  single  junction  gallium  nitride  doping  transition  metal  manganese  semiconductor  research  technology  photovoltaic  PV  Delicious 
april 2010 by asteroza
MicroContinuum, Inc.
Needs high speed switching to actually recover the energy from the antennas.
nanoantenna  nantenna  infrared  IR  solar  PV  cell  thin  film  flexible  power  generator  green  energy  nanotechnology  materials  science  research  technology  Delicious 
september 2009 by asteroza

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