A group of UC Berkeley engineers has built a bright-light emitting device that is extremely thin, would be bright when turned on and completely transparent when turned off. Funded by the National Science Foundation and the Department of Energy, the project has also been published in the journal, Nature Communications, recently.

“The materials are so thin and flexible that the device can be made transparent and can conform to curved surfaces,” the official website of UC Berkeley quotes Der Hsein-Lien, a post-doctoral fellow at the university. He teamed up with Matin Amani and Sujai Desai, both doctoral students at Berkeley’s Department of Electrical Engineering and Computer Sciences, for the project.

Here is the Tweet from UC Berkeley:

The device was developed in the laboratory of Ali Javey, professor of Electrical Engineering and Computer Sciences at Berkeley. Javey said, “A lot of work remains to be done and a number of challenges need to be overcome to further advance the technology for practical applications. However, this is one step forward by presenting a device architecture for easy injection of both charges into monolayer semiconductors.”

The concept may work on other devices and materials. Someday, it could also have applications in several fields where having invisible displays are acceptable.