'Self-repairing' solar cells described

U.S. researchers say they've produced a new class of solar cells that can repair themselves much like plants do through photosynthesis. By using carbon nanotubes and DNA, scientists at Purdue University have developed solar technology aimed at increasing service life and reducing cost, a university release said Tuesday. "We've created artificial photosystems using optical nanomaterials to harvest solar energy that is converted to electrical power," Jong Hyun Choi, a Purdue professor of mechanical engineering, said. Photoelectrochemical cells that convert sunlight into electricity contain light-absorbing dyes called chromophores, similar to chlorophyll molecules in plants, that degrade due to exposure to sunlight. "The critical disadvantage of conventional photoelectrochemical cells is this degradation," Choi said. The new technology gets around this problem in the same way nature does, by continuously replacing the photo-damaged dyes with new ones. "This sort of self-regeneration is done in plants every hour," Choi said.

Comments (0)

This post does not have any comments. Be the first to leave a comment below.


Post A Comment

You must be logged in before you can post a comment. Login now.

Featured Product

Baja Carports Design-Build Solar Support Systems™

With Baja Carports 35 plus years in the industry installing our Solar Support Systems nationwide and whose founder Bob Hayworth was one of the first to use solar panels as the rooftops on commercial carports ~ is assurance that you will receive Baja expertise in all phases of installation. Our team's diligence makes the design-build process easy for customers. You don't need a set of architecture plans to begin talking to us about your project. Baja's in-house design engineers will work closely with you to meet your project specifications and city's criteria. You'll have our design team's years of experience applied to your plans. Our engineers will deliver a set of stamped plans, which maximize canopy coverage and details the most-effective layout for your business' parking lot.