Low-Temperature Crystallization Enables 21.9% Efficient Single-Crystal MAPbI3 Inverted Perovskite Solar Cells
AuthorsAlsalloum, Abdullah Yousef
Zhumekenov, Ayan A.
Roqan, Iman S.
Mohammed, Omar F.
KAUST DepartmentChemical Science Program
Functional Nanomaterials Lab (FuNL)
KAUST Catalysis Center (KCC)
KAUST Solar Center (KSC)
Material Science and Engineering
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
Semiconductor and Material Spectroscopy (SMS) Laboratory
Ultrafast Laser Spectroscopy and Four-dimensional Electron Imaging Research Group
Online Publication Date2020-01-27
Print Publication Date2020-02-14
Embargo End Date2021-01-27
Permanent link to this recordhttp://hdl.handle.net/10754/661356
MetadataShow full item record
AbstractLead halide perovskite solar cells (PSCs) have advanced rapidly in performance over the past decade. Single-crystal PSCs based on micrometers-thick grain-boundary-free films with long charge carrier diffusion lengths and enhanced light absorption (relative to polycrystalline films) have recently emerged as candidates for advancing PSCs further toward their theoretical limit. To date, the preferred method to grow MAPbI3 single-crystal films for PSCs involves solution processing at temperatures ≳120 °C, which adversely affects the films’ crystalline quality, especially at the surface, primarily because of methylammonium iodide loss at such high temperatures. Here we devise a solvent-engineering approach to reduce the crystallization temperature of MAPbI3 single-crystal films (<90°C), yielding better quality films with longer carrier lifetimes. Single-crystal MAPbI3 inverted PSCs fabricated with this strategy show markedly enhanced open-circuit voltages (1.15 V vs 1.08 V for controls), leading to power conversion efficiencies of up to 21.9%, which are among the highest reported for MAPbI3-based devices.
CitationAlsalloum, A. Y., Turedi, B., Zheng, X., Mitra, S., Zhumekenov, A. A., Lee, K. J., … Bakr, O. M. (2020). Low-Temperature Crystallization Enables 21.9% Efficient Single-Crystal MAPbI3 Inverted Perovskite Solar Cells. ACS Energy Letters, 657–662. doi:10.1021/acsenergylett.9b02787
SponsorsThe authors acknowledge funding support from King Abdullah University of Science and Technology (KAUST) and Saudi Aramco. The authors thank Prof. Edward H. Sargent for useful discussions and suggestions.
PublisherAmerican Chemical Society (ACS)
JournalACS Energy Letters