Managing grains and interfaces via ligand anchoring enables 22.3%-efficiency inverted perovskite solar cells

Xiaopeng Zheng, Yi Hou, Chunxiong Bao, Jun Yin, Fanglong Yuan, Ziru Huang, Kepeng Song, Jiakai Liu, Joel Troughton, Nicola Gasparini, Chun Zhou, Yuanbao Lin, Ding-Jiang Xue, Bin Chen, Andrew K. Johnston, Nini Wei, Mohamed Nejib Hedhili, Mingyang Wei, Abdullah Y. Alsalloum, Partha Maity, Bekir Turedi, Chen Yang, Derya Baran, Thomas D. Anthopoulos, Yu Han, Zheng-Hong Lu, Omar F. Mohammed, Feng Gao, Edward H. Sargent () and Osman M. Bakr ()
Additional contact information
Xiaopeng Zheng: King Abdullah University of Science and Technology (KAUST)
Yi Hou: University of Toronto
Chunxiong Bao: Linköping University
Jun Yin: King Abdullah University of Science and Technology (KAUST)
Fanglong Yuan: University of Toronto
Ziru Huang: University of Toronto
Kepeng Song: King Abdullah University of Science and Technology (KAUST)
Jiakai Liu: King Abdullah University of Science and Technology (KAUST)
Joel Troughton: King Abdullah University of Science and Technology (KAUST)
Nicola Gasparini: King Abdullah University of Science and Technology (KAUST)
Chun Zhou: University of Toronto
Yuanbao Lin: King Abdullah University of Science and Technology (KAUST)
Ding-Jiang Xue: University of Toronto
Bin Chen: University of Toronto
Andrew K. Johnston: University of Toronto
Nini Wei: King Abdullah University of Science and Technology (KAUST)
Mohamed Nejib Hedhili: King Abdullah University of Science and Technology (KAUST)
Mingyang Wei: University of Toronto
Abdullah Y. Alsalloum: King Abdullah University of Science and Technology (KAUST)
Partha Maity: King Abdullah University of Science and Technology (KAUST)
Bekir Turedi: King Abdullah University of Science and Technology (KAUST)
Chen Yang: King Abdullah University of Science and Technology (KAUST)
Derya Baran: King Abdullah University of Science and Technology (KAUST)
Thomas D. Anthopoulos: King Abdullah University of Science and Technology (KAUST)
Yu Han: King Abdullah University of Science and Technology (KAUST)
Zheng-Hong Lu: University of Toronto
Omar F. Mohammed: King Abdullah University of Science and Technology (KAUST)
Feng Gao: Linköping University
Edward H. Sargent: University of Toronto
Osman M. Bakr: King Abdullah University of Science and Technology (KAUST)

Nature Energy, 2020, vol. 5, issue 2, 131-140

Abstract: Abstract Inverted perovskite solar cells have attracted increasing attention because they have achieved long operating lifetimes. However, they have exhibited significantly inferior power conversion efficiencies compared to regular perovskite solar cells. Here we reduce this efficiency gap using a trace amount of surface-anchoring alkylamine ligands (AALs) with different chain lengths as grain and interface modifiers. We show that long-chain AALs added to the precursor solution suppress nonradiative carrier recombination and improve the optoelectronic properties of mixed-cation mixed-halide perovskite films. The resulting AAL surface-modified films exhibit a prominent (100) orientation and lower trap-state density as well as enhanced carrier mobilities and diffusion lengths. These translate into a certified stabilized power conversion efficiency of 22.3% (23.0% power conversion efficiency for lab-measured champion devices). The devices operate for over 1,000 h at the maximum power point under simulated AM1.5 illumination, without loss of efficiency.

Date: 2020
References: Add references at CitEc
Citations: View citations in EconPapers (10)

Downloads: (external link)
https://www.nature.com/articles/s41560-019-0538-4 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natene:v:5:y:2020:i:2:d:10.1038_s41560-019-0538-4

Ordering information: This journal article can be ordered from
https://www.nature.com/nenergy/

DOI: 10.1038/s41560-019-0538-4

Access Statistics for this article

Nature Energy is currently edited by Fouad Khan

More articles in Nature Energy from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().