Affiliation:
1. Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC 27599, USA.
Abstract
Avoiding buried voids
The buried interfaces of perovskite solar cells are difficult to alter after synthesis. During manufacture, Chen
et al
. removed perovskite films with dimethyl sulfoxide solvent from the hole-transfer layer and observed a substantial void fraction that degraded film performance. Replacing most of the dimethyl sulfoxide with carbohydrazide, a lead-coordinating compound with a much higher boiling point, eliminated voids. Such solar cells maintained high power conversion efficiency after 550 hours of operation at 60°C. —PDS
Funder
Office of Naval Research
U.S. Department of Energy
Publisher
American Association for the Advancement of Science (AAAS)
Cited by
390 articles.
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