Authors
Jason J Yoo, Connor J Dolan, Seongsik Nam, Jinho Lee, Kyu Min Kang, Bong Joo Kang, Rushik Desai, Niranjana Mohan Kumar, Arkita Chakrabarti, Daesoo Kim, Jang Hee Cho, Donghyuk Chung, Jack R Palmer, Kelly X Vences, Zhewen J D Deng, Yanqi Luo, Barry Lai, Tao Zhou, Zhonghou Cai, Martin V Holt, Andrew M Kiss, In Sun Cho, Dong Hyun Kim, Jun Hong Noh, Mariana I Bertoni, Arun Mannodi-Kanakkithodi, Dane W deQuilettes, David P Fenning, Seong Sik Shin
Published in
Science (New York, N.Y.). Volume 394. Issue 6820. Pages 228-233. Oct 08, 2026. Epub Oct 08, 2026.
Abstract
Improvements to the radiative efficiency of halide perovskite thin films are necessary to approach fundamental solar cell performance limits. We tailored perovskite crystallization by leveraging the eutectic interaction between zinc bromide and methylammonium chloride additives. The resulting films had high photoluminescence quantum yield and charge carrier decay times and low surface recombination velocity. Nanoprobe x-ray microscopy revealed local melting of the eutectic at grain boundaries during annealing that reduced intragranular structural defect density. Annealing also homogenized the halide distribution and caused zinc segregation to grain boundaries. Solar cells fabricated with the volatile eutectic reached 26.5% power conversion efficiency (PCE, certified 25.9%), and perovskite minimodules (areas more than 15 square centimeters) had 23.9% PCE. Small-area cells with a poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] hole transporter retained 85.8% of their initial 24.1% PCE after 1400 hours of continuous operation at 85°C. Furthermore, this approach enables 26.1% external quantum efficiency as light-emitting diodes.
PMID:
42848877
Bibliographic data and abstract were imported from PubMed on 09 Oct 2026.
Read full publication at:
Please sign in
to see all details.
Advertisement
Stats
- Recommendations n/a n/a positive of 0 vote(s)
- Views 41
- Comments 0