Binghamton University Research News
  • News
  • Features
  • Faculty
  • Students
  • Videos
  • Photos
  • Subscribe

New grant to advance solar energy

By Rachael Flores • Jan 25, 2018 • Faculty•   

A Binghamton researcher whose work aims to create an alternative to traditional, silicon-based solar cells has won the National Science Foundation’s most prestigious grant for early-career faculty.

Tara P. Dhakal, an assistant professor of electrical and computer engineering, was awarded a five-year, $500,000 NSF CAREER grant for his study “Toward Twenty Year Lifetime: Hermetic Sealing for Perovskite Solar Cells.” The proposal was one of just 11 to be funded in a field of 150 proposals.

“Most solar cells are made from silicon and, while those solar cells are highly efficient, they have their limitations,” says Dhakal, who also serves as interim director of Binghamton’s Center for Autonomous Solar Power.

His work focuses on solar cells made with perovskite, a crystalline mineral found in nature that has shown the potential to create solar cells that are just as efficient as the silicon-based type.

“Unfortunately, the current versions of perovskite solar cells are typically fabricated with toxic lead,” Dhakal says. He wants to replace lead with non-toxic germanium.

“Germanium and lead both come from column 14 on the periodic table,” Dhakal says. “Other researchers have tried, without success, to use tin for the same reason but I’ve found evidence that germanium has a better chance of success.”

If he is able to replace the lead in the perovskite solar cells, they could prove to be more environmentally friendly than other solar cells.

However, even with the lead removed, there is another issue that could prevent perovskite solar cells from being deployed for an extended period of time.

That’s why Dhakal’s study will also be looking at ways to make perovskite solar cells last longer.

“Lead perovskite solar cells have only lasted for several months under ideal laboratory conditions,” he says. “With my proposed sealing techniques, I predict that module lifetimes could be greater than 20 years.”

With Dhakal’s seal on the perovskite solar cells, they could have the same shelf life that silicon solar cells do. Without lead and with this sealing, the cells will become more practical for use — which Dhakal says will facilitate a wider reach for solar power.

“Silicon makes a robust solar cell but one thing it misses is flexibility,” he says. “The perovskite solar cells could be made on fabrics or plastics, which would make solar power much more accessible.”

Dhakal, who did his undergraduate work in Nepal, came to Binghamton as a research scientist in 2010 after earning a doctorate at the University of Florida.

Like this article? Please share!
energyNSFperovskitesiliconsmart energysolar
NSF funds research into superconductivity
Faculty innovation could transform brain tumor surgery

You Might Also Like

  • What tiny fossils can tell us about the changing climate

  • Journal highlights Binghamton microbiologist’s work

  • Historian’s book project wins NEH backing

  • Neuroscientist named Chancellor’s Early-Career Scholar

    Research in the news

    • Modern medicine traces its scientific roots to the Middle Ages

    • Are people born with good balance?

    • Earth to be hit by ‘widespread pest outbreaks’ — and it’s our fault

    • For EV batteries, lithium iron phosphate narrows the gap with nickel, cobalt

    • The revolt of the other mothers

    Recent Comments

    • Resume Format on Computer program spots narcissistic execs
    • Ann Walker on Wasps may provide climate change insights
    • Dejen Habtom on Ancient seawater may yield climate change insights
    • Don Franck on Binghamton battery project wins $500,000; will compete for $100M
    • Dave on Anechoic chamber puts sound to the test
    Binghamton University Binghamton University

    © 2025 Binghamton University State University of New York
    Images used throughout this site are copyright protected. For permission and terms of use, visit the about us page