• 3 minutes e-car sales collapse
  • 6 minutes America Is Exceptional in Its Political Divide
  • 11 minutes Perovskites, a ‘dirt cheap’ alternative to silicon, just got a lot more efficient
  • 2 hours GREEN NEW DEAL = BLIZZARD OF LIES
  • 2 days Does Toyota Know Something That We Don’t?
  • 5 days OPINION: Putin’s Genocidal Myth A scholarly treatise on the thousands of years of Ukrainian history. RCW
  • 2 days World could get rid of Putin and Russia but nobody is bold enough
  • 1 day America should go after China but it should be done in a wise way.
  • 5 days CHINA Economy IMPLODING - Fastest Price Fall in 14 Years & Stock Market Crashes to 5 Year Low
  • 4 days China is using Chinese Names of Cities on their Border with Russia.
  • 5 days Russian Officials Voice Concerns About Chinese-Funded Rail Line
  • 4 days CHINA Economy Disaster - Employee Shortages, Retirement Age, Birth Rate & Ageing Population
  • 10 days huge-deposit-of-natural-hydrogen-gas-detected-deep-in-albanian-mine
  • 5 days Putin and Xi Bet on the Global South
  • 5 days "(Another) Putin Critic 'Falls' Out Of Window, Dies"
  • 6 days United States LNG Exports Reach Third Place
  • 6 days Biden's $2 trillion Plan for Insfrastructure and Jobs

Breaking News:

U.S. Crude Oil, Gasoline Inventories Boom

Red Sea Strikes and China's Economic Stimulus Support Oil Prices

Red Sea Strikes and China's Economic Stimulus Support Oil Prices

The Houthi's renewed maritime offensive…

US Navy Develops Underwater Solar Cells

Underwater autonomous systems which provide situational awareness and long-term environment monitoring are becoming increasingly more popular. In order to power these systems cables must be laid to supply power created onshore, expensive batteries must be used and constantly changed to ensure a steady power supply, or solar panels must be constructed on an above-water platform.

Photovoltaic cells have been previously tested for underwater use, but due to the lack of sunlight penetrating the water they only had limited success.

Now, a team of scientists from the US Naval Research Laboratory Electronics Science and Technology Division have developed a solar cell specifically designed for use underwater, which can efficiently absorb solar radiation underwater up to a depth of nine metres.

Philip Jenkins, one of the scientists on the team, explained that, “although water absorbs sunlight, the technical challenge is to develop a solar cell that can efficiently convert these underwater photons to electricity.”

Due to the lack of penetration the intensity of solar radiation underwater is lower than on the surface, however the sunlight that does penetrate comes in narrower wavelength concentrations, leading to high conversion efficiency when the solar cells are adjusted to match the wavelength range.

Normal PV cells are constructed from crystalline silicon, however previous tests have shown that this material was inefficient; instead the team have are using gallium indium phosphide to create their underwater PV cells. Gallium indium phosphide works best for wavelengths between 400 and 700 nanometres, the typical range of light found underwater.

By. Joao Peixe of Oilprice.com



Join the discussion | Back to homepage



Leave a comment

Leave a comment

EXXON Mobil -0.35
Open57.81 Trading Vol.6.96M Previous Vol.241.7B
BUY 57.15
Sell 57.00
Oilprice - The No. 1 Source for Oil & Energy News