Back in 2009, a research team from the University of Tokyo led by Professor Tsutomu Miyasaka found that a substance called perovskite had the potential to generate solar power. However, at the time it only had a very weak power conversion efficiency (PCE) of about four percent and would break down in just a few minutes.
Because of these sizable flaws, not could practical use could be made of perovskite and the discovery lay dormant for a few years. Then, after a Korean team managed to double the PCE in 2011, research into the material was reignited. Now as scientists around the world continue to work on it, the PCE has become well above 20 percent and comparable with the standard silicon-based solar panels that we see today.
With perovskite being drastically cheaper to produce, more flexible to use, and now as efficient as regular solar panels, could we be on the verge of a solar energy revolution?

7-Eleven Japan’s ramen-cooking robot whipped us up a bowl of noodles【Taste test】
Disillusionment at Tsukiji’s tourist-target prices led us to a great ramen restaurant in Tokyo
Japan’s otoshidama tradition of giving kids money at New Year’s gets a social welfare upgrade
Dragon Quest Burgers and Slime drinks are coming to McDonald’s Japan【Video】
Can a dirty butthole make you filthy rich in Japan? We’re starting a New Year’s lottery experiment
Mr. Sato accosts award-winning actor Hideaki Ito【Interview】
These creative, fanciful post boxes from Japan will delight you in so many ways【Photos】
Is it rude to sing along at concerts in Japan? We ask a pro musician for his take
Japanese convenience store chain has beer and sake dispensers that few people know about
Shikadamari: The Nara deer summer gathering phenomenon that baffles visitors every year
7-Eleven Japan starts new temporary luggage storage service in over 300 branches
Japan may add Japanese language proficiency, lifestyle classes to permanent foreign resident requirements
Starbucks Japan releases new zodiac chilled cup drink for 2026
Lacquerware supplier to emperor of Japan and Pokémon team up for new tableware
Starbucks teams up with 166-year-old Kyoto doll maker for Year of the Horse decorations【Photos】
Starbucks on a Shinkansen bullet train platform: 6 tips for using the automated store in Japan
Is this the most relaxing Starbucks in Japan?
Large amount of supposed human organs left in Osaka marketplace
Tokyo’s Tsukiji sushi neighborhood asks tour groups to stay away for the rest of the month
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Japanese train company is letting fans buy its actual ticket gates for their homes
Tokyo considering law requiring more trash cans following litter increase in heavily touristed area
Nintendo’s Kirby now delivering orders at Kura Sushi restaurants, but not in Japan
Tokyo event lets you travel back in time, for free, to celebrate 100 years since Showa era start
Sanrio theme park in Japan announces plans to expand into a Sanrio resort
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s deadliest food claims more victims, but why do people keep eating it for New Year’s?
We deeply regret going into this tunnel on our walk in the mountains of Japan
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
The top 10 annoying foreign tourist behaviors on trains, as chosen by Japanese people【Survey】
No more using real katana for tourism activities, Japan’s National Police Agency says
Starbucks Japan reveals new sakura drinkware collection, inspired by evening cherry blossoms
Mr. Sato accosts award-winning actor Hideaki Ito【Interview】
These creative, fanciful post boxes from Japan will delight you in so many ways【Photos】
Is it rude to sing along at concerts in Japan? We ask a pro musician for his take
Japanese convenience store chain has beer and sake dispensers that few people know about
Shikadamari: The Nara deer summer gathering phenomenon that baffles visitors every year
The phantom juice only available from vending machines at JR East train stations
Starbucks Japan releases new zodiac chilled cup drink for 2026
How should you use the small hiroen in a Japanese ryokan hotel room?
Five different ways to say “children” in Japanese
Hello Kitty Choco Egg figures are an adorable trip through three periods of Japanese pop culture【Pics】
Why you shouldn’t call this food “Hiroshimayaki” if you’re talking to people from Hiroshima
The results are in from our one million-yen stack of Japanese lottery tickets! So, are we rich?