Mitsubishi Develops Spray-on Solar Power Technology


The Earthquake followed by a tsunami that devastated Japan back in March has spawned a veritable cleantech revolution, both on the research and governmental fronts.

Now Mitsubishi Chemical Corp has announced it has developed a spray-on solar power technology whereby solar cells can be applied to buildings, vehicles and even clothing, just like painting. The solar cells are very thin (less than 1 millimeter thick) and weigh less than one tenth of crystalline solar panels of the same size.

According to a report in the UK Independent newspaper, the solar cells use carbon compounds which as semiconductors when dried and solidified, generating electricity when exposed to light. The potential to save space required by conventional solar panels and the versatility of the technology could hail a new era for solar power.

Mitsubishi Chemical’s prototype spray-on solar cells offer a light-to-electricity conversion rate of 10.1 per cent. Traditional crystalline silicon solar cells offer up to 20 per cent, so the new technology still lags behind. But Mitsubishi said it hopes to improve efficiency to 15 per cent by 2015.

The company’s first plan is to apply its technology on cars, coating them with solar cells. It says it could give a car sufficient power to travel six miles after two hours of exposure to the sun.

Article by Antonio Pasolini, a Brazilian writer and video art curator based in London, UK. He holds a BA in journalism and an MA in film and television.

About Author

Walter’s contributions to CleanTechies over the past 4 years have been instrumental in growing the publications social media channels via his ongoing editorial and data driven strategies. He is the founder and managing director of Sunflower Tax, a renewable energy tax and finance consultancy based in San Diego, California. Active in the San Diego clean technology community, participating in events sponsored by CleanTech San Diego, EcoTopics, and Cleantech Open San Diego, Walter has also been a presenter at numerous California Center for Sustainability (CCSE) programs. He currently serves as an adjunct professor at the University of San Diego School of Law where he teaches a course on energy taxation and policy.


  1. Pingback: Solar roadways, spray-on solar power, aviation fuel from waste…what’s next? « Sustainable Futures Blog

  2. is this organic PVs? with Roll-to-Roll techniques? But as far as I know, 8.3% conversion rate is the world record by far, am I lost?

    Who has more infor on this topic?

  3. This is an amazing new technology. Sometimes the greatest ideas spawn after some of the worst tragedies. I’m sure they had been working on this for a while, but timing is everything, especially since Japan and many other countries are looking for ways to reduce their reliance on nuclear technology.

    My company specializes in green tech as well. Go Mitsubishi! Arigato!

    OneStopGreen dot com

    David Estes

  4. Pingback: The Latest Fashion Accessory: Solar Cells « emerginggreen