Efficient, stable silicon tandem cells enabled by anion-engineered wide-bandgap perovskites
- Authors
- Kim, Daehan; Jung, Hee Joon; Park, Ik Jae; Larson, Bryon W.; Dunfield, Sean P.; Xiao, Chuanxiao; Kim, Jekyung; Tong, Jinhui; Boonmongkolras, Passarut; Ji, Su Geun; Zhang, Fei; Pae, Seong Ryul; Kim, Minkyu; Kang, Seok Beom; Dravid, Vinayak; Berry, Joseph J.; Kim, Jin Young; Zhu, Kai; Kim, Dong Hoe; Shin, Byungha
- Issue Date
- Apr-2020
- Publisher
- AMER ASSOC ADVANCEMENT SCIENCE
- Citation
- SCIENCE, v.368, no.6487, pp 155 - +
- Journal Title
- SCIENCE
- Volume
- 368
- Number
- 6487
- Start Page
- 155
- End Page
- +
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/1522
- DOI
- 10.1126/science.aba3433
- ISSN
- 0036-8075
1095-9203
- Abstract
- Maximizing the power conversion efficiency (PCE) of perovskite/silicon tandem solar cells that can exceed the Shockley-Queisser single-cell limit requires a high-performing, stable perovskite top cell with a wide bandgap. We developed a stable perovskite solar cell with a bandgap of similar to 1.7 electron volts that retained more than 80% of its initial PCE of 20.7% after 1000 hours of continuous illumination. Anion engineering of phenethylammonium-based two-dimensional (2D) additives was critical for controlling the structural and electrical properties of the 2D passivation layers based on a lead iodide framework. The high PCE of 26.7% of a monolithic two-terminal wide-bandgap perovskite/silicon tandem solar cell was made possible by the ideal combination of spectral responses of the top and bottom cells.
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