Nanotechnology Now – Press Release: “New kind of ‘tandem’ solar cell developed: Researchers combine 2 types of photovoltaic material to make a cell that harnesses more sunlight”

Abstract:

Researchers at MIT and Stanford University have developed a new kind of solar cell that combines two different layers of sunlight-absorbing material in order to harvest a broader range of the sun’s energy. The development could lead to photovoltaic cells that are more efficient than those currently used in solar-power installations, the researchers say.

New kind of ‘tandem’ solar cell developed: Researchers combine 2 types of photovoltaic material to make a cell that harnesses more sunlight

Cambridge, MA | Posted on March 24th, 2015

The new cell uses a layer of silicon — which forms the basis for most of today’s solar panels — but adds a semi-transparent layer of a material called perovskite, which can absorb higher-energy particles of light. Unlike an earlier “tandem” solar cell reported by members of the same team earlier this year — in which the two layers were physically stacked, but each had its own separate electrical connections — the new version has both layers connected together as a single device that needs only one control circuit.

The new findings are reported in the journal Applied Physics Letters by MIT graduate student Jonathan Mailoa; associate professor of mechanical engineering Tonio Buonassisi; Colin Bailie and Michael McGehee at Stanford; and four others.

Read more here: Nanotechnology Now – Press Release: “New kind of ‘tandem’ solar cell developed: Researchers combine 2 types of photovoltaic material to make a cell that harnesses more sunlight”.