ID
× COMMENTARYEDITOR'S PAGE
Dorothy_LozowskiStarting strong
Last month, the American Chemistry Council (ACC; www.americanchemistry.com) issued its…
COVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical Engineering MagazineTesting tide power
A counter-rotating propeller technology that is being developed to harness…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEENGINEERING PRACTICEENVIRONMENTAL MANAGERYOU AND YOUR JOBEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More

Comment

Enhancing the stability of perovskite solar cells

By Paul Grad |

Perovskite solar cells have attracted much interest in the past few years as the next-generation solar cells capable of surpassing silicon cells’ efficiency. However, because the perovskite materials are easily decomposed in moist conditions, they must be properly encapsulated, which results in low stability.

To overcome those limitations and speed up the commercialization of perovskite solar cells, professor Jin Young Kim from the School of Energy and Chemical Engineering at Ulsan National Institute of Science and Technology (UNIST, Ulsan, South Korea; www.unist.ac.kr) and associates from Wonkwang University (Iksan) and the Korea Institute of Energy Research (KIER; Ulsan, both South Korea) have used fluorine-functionalized graphene nanoplatelets (EFGnPs-F) with a p-i-n structure of perovskite solar cells to fully cover the perovskite active layer and protect against water ingress. The cells achieved 82% stability relative to initial performance over 30 days of air exposure without encapsulation.

The enhanced stability resulted from fluorine-substitution on EFGnPs. “By substituting carbon for fluorine, we have created a two-dimensional material with high hydrophobicity, like Teflon, and then applied it to perovskite solar cells,” says a member of the research team, professor Gwi-Hwan Kim at UNIST.

The newly-developed perovskite solar cell device was fabricated using a solution process, in which the perovskite material is coated onto on a flexible film. This process will allow applying solar cells to wearable devices. A simple manufacturing process and a low manufacturing cost distinguishes the new devices from existing silicon-based inorganic electronic devices.

Related Content
Enhanced perovskites
Researchers from the Ulsan National Institute of Science and Technology (Ulsan; www.unist.ac.kr) have found a new way to increase the…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Trinseo Digitizes Control System Migration Projects to Achieve Fast ROI
Purdue University Saves $400,000 Annually with Local Vacuum Networks
Bag filter Housings/Vessels
Innovative Backwashable Media Filter
Automated Vertical Tower Filter Press

View More

Live chat by BoldChat