What question did this study set out to answer?

To determine whether guanidinium cations can directly incorporate into the crystal lattice of lead iodide perovskites and explain their impact on carrier recombination dynamics.

February 11, 2018Journal of the American Chemical SocietyOpen Access

Formation of Stable Mixed Guanidinium–Methylammonium Phases with Exceptionally Long Carrier Lifetimes for High-Efficiency Lead Iodide-Based Perovskite Photovoltaics

View Full Paper

Ask AI

Bookmark

Authors

DKDominik J. KubickiUniversity of Birmingham DPDaniel ProchowiczInstitute of Physical Chemistry AHAlbert HofstetterRoche (Switzerland)

Discussion

Member takes

Implication

Spectroscopic analysis reveals direct guanidinium incorporation into lead iodide perovskite lattices, explaining enhanced charge carrier lifetimes for high-efficiency solar cells.

Key Points

To determine whether guanidinium cations can directly incorporate into the crystal lattice of lead iodide perovskites and explain their impact on carrier recombination dynamics.
Applied solid-state nuclear magnetic resonance (NMR) spectroscopy to investigate atomic-level cation incorporation in MAPbI3 and FAPbI3 lattices.
Characterized the picosecond-scale reorientational rotational dynamics of guanidinium within mixed-cation perovskite phases.
Atomic-level solid-state NMR confirmed that guanidinium incorporates directly into the perovskite host lattice, forming pure mixed GUA_x MA_{1-x} PbI3 and GUA_x FA_{1-x} PbI3 phases rather than acting solely as a surface passivator.
Guanidinium cations undergo reorientation on a picosecond time scale within the crystal lattice, directly stabilizing charge carriers and extending their lifetimes.

Cite This Study

Kubicki et al. (2018) studied this question.

synapsesocial.com/papers/69dd401699c691022d99b91b https://doi.org/10.1021/jacs.7b12860

View Full Paper

Ask AI

Bookmark

Implication

Spectroscopic analysis reveals direct guanidinium incorporation into lead iodide perovskite lattices, explaining enhanced charge carrier lifetimes for high-efficiency solar cells.

Formation of Stable Mixed Guanidinium–Methylammonium Phases with Exceptionally Long Carrier Lifetimes for High-Efficiency Lead Iodide-Based Perovskite Photovoltaics

Discussion

Member takes

Implication

Key Points

Cite This Study

Formation of Stable Mixed Guanidinium–Methylammonium Phases with Exceptionally Long Carrier Lifetimes for High-Efficiency Lead Iodide-Based Perovskite Photovoltaics

Discussion

Member takes

Implication

Key Points

Cite This Study

Also Consider

Also Consider