Bandgap engineering for high-efficiency solar cell design

Jun 22, 2012

ZnSnP2, an absorber material for solar cells, transitions from an ordered to a disordered structure at high temperatures. Researchers from University College London and the University of Bath have proposed taking advantage of this structural change to design high-efficiency solar absorbers.

The team used theoretical calculations to investigate the electronic structure of both phases, and predicted a significant difference in the bandgap between the ordered and fully disordered materials.

Experimental measurements of the bandgap of ZnSnP2 are consistent with predictions from partially disordered phases.

In a paper accepted for publication in the American Institute of Physics' journal , the researchers propose that a family of ZnSnP2 materials with different structural phases could provide a graded solar cell system that absorbs light across a wide swath of the spectrum.

Explore further: Photovoltaic cells tap underwater solar energy

More information: "Bandgap engineering of ZnSnP2 for high-efficiency solar cells", Applied Physics Letters.

add to favorites email to friend print save as pdf

Related Stories

Crystal to glass cooling model developed

Feb 22, 2006

University of Tokyo scientists have discovered why cooling sometimes causes liquid molecules to form disordered glasses, rather than ordered crystals.

Digital memory enters a new phase

Mar 15, 2005

With the recent explosion in the popularity of digital music, digital photography and even digital video, the demand for faster, higher-capacity and cheaper computer memory has never been greater. Writing in the April issue ...

Photovoltaic cells tap underwater solar energy

Jun 07, 2012

Scientists at the U.S. Naval Research Laboratory (NRL), Electronics Science and Technology Division, dive into underwater photovoltaic research to develop high bandgap solar cells capable of producing sufficient ...

Recommended for you

Breakthrough calls time on bootleg booze

2 hours ago

(Phys.org) —Using a laser, the St Andrews scientists can now carry out detailed analysis of a spirit sample no bigger than a teardrop and can even confirm whether it is toxic or not. It's hoped the testing ...

Competition in the quantum world

5 hours ago

Innsbruck physicists led by Rainer Blatt and Peter Zoller experimentally gained a deep insight into the nature of quantum mechanical phase transitions. They are the first scientists that simulated the competition ...

Promising doped zirconia

May 17, 2013

Materials belonging to the family of dilute magnetic oxides (DMOs)—an oxide-based variant of the dilute magnetic semiconductors—are good candidates for spintronics applications. This is the object of ...

Bringing life into focus

May 17, 2013

Spinning-disk confocal microscopy is an optical imaging technique that can be used to generate detailed three-dimensional fluorescence images of living cells and their contents. Although a powerful tool for ...

User comments : 0

More news stories

Breakthrough calls time on bootleg booze

(Phys.org) —Using a laser, the St Andrews scientists can now carry out detailed analysis of a spirit sample no bigger than a teardrop and can even confirm whether it is toxic or not. It's hoped the testing ...

Competition in the quantum world

Innsbruck physicists led by Rainer Blatt and Peter Zoller experimentally gained a deep insight into the nature of quantum mechanical phase transitions. They are the first scientists that simulated the competition ...

New principle may help explain why nature is quantum

Like small children, scientists are always asking the question 'why?'. One question they've yet to answer is why nature picked quantum physics, in all its weird glory, as a sensible way to behave. Researchers ...

Slow earthquakes: It's all in the rock mechanics

(Phys.org) —Earthquakes that last minutes rather than seconds are a relatively recent discovery, according to an international team of seismologists. Researchers have been aware of these slow earthquakes, ...