Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

ortho–para-Directing Deactivators: Halogens

ortho–para-Directing Deactivators: Halogens

Halogens are ortho–para directors. They are more electronegative than carbon. Therefore, as ring substituents, they can withdraw electrons through the inductive effect and deactivate the aromatic ring towards electrophilic substitution. Halogens also have an electron-donating resonance effect on the ring, which influences the orientation of the incoming electrophile. If an electrophile attacks at the ortho or the para position, the halogen donates electrons and stabilizes the intermediate...

Alkyl Halides

Alkyl Halides

Structural Properties
Alkyl halides are halogen-substituted alkanes wherein one or more hydrogen atoms of an alkane is replaced by a halogen atom such as fluorine, chlorine, bromine, or iodine. The carbon atom in an alkyl halide is bonded to the halogen atom, which is sp3-hybridized and exhibits a tetrahedral shape.
Unlike alkyl halides, compounds in which a halogen atom is bonded to an sp2 -hybridized carbon atom of a carbon-carbon double bond (C=C) are called vinyl halides. Whereas aryl...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Polymer-Assisted Crystallization and Defect Passivation in Planar Wide-Bandgap FAPbBr<sub>3</sub> Perovskite Solar Cells.

ACS omega·2025

Same author

The Role of Random Texture Scattering on the Absorptance Enhancement in Halide Perovskite Layers.

ACS applied materials & interfaces·2025

Same author

Temperature-Driven Morphological and Microstructural Changes of Gold Nanoparticles Prepared by Aggregation from the Gas Phase.

ACS omega·2025

Same author

Large asymmetric anomalous Nernst effect in the antiferromagnet SrIr<sub>0.8</sub>Sn<sub>0.2</sub>O<sub>3</sub>.

Nature communications·2025

Same author

Relevance of Platinum Underlayer Crystal Quality for the Microstructure and Magnetic Properties of the Heterostructures YbFeO<sub>3</sub>/Pt/YSZ(111).

Nanomaterials (Basel, Switzerland)·2024

Same author

Observation of a spontaneous anomalous Hall response in the Mn<sub>5</sub>Si<sub>3</sub> d-wave altermagnet candidate.

Nature communications·2024

Search research articles

Related Experiment Video

Updated: Apr 7, 2026

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Published on: March 19, 2017

Stabilizing Halide Distribution in Mixed Halide Perovskites through Diammonium-Based Passivation.

Amalraj Peter Amalathas^1,2, Saisankar Sunthareswaran¹, Neda Neykova^2,3

¹Department of Physics, Faculty of Science, University of Jaffna, Jaffna 40000, Sri Lanka.

|April 6, 2026

Summary

This summary is machine-generated.

1,3-diaminopropane dihydroiodide (PDADI) passivates mixed halide perovskite solar cells, reducing halide segregation and defects. This boosts power conversion efficiency and stability for tandem applications.

More Related Videos

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

Published on: September 8, 2017

Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation

Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation

Published on: October 1, 2019

Related Experiment Videos

Last Updated: Apr 7, 2026

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Published on: March 19, 2017

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

Published on: September 8, 2017

Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation

Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation

Published on: October 1, 2019

Area of Science:

Materials Science
Renewable Energy
Photovoltaics

Background:

Mixed halide perovskite solar cells (PSCs) show promise for high-efficiency tandem photovoltaics.
Performance is limited by light-induced halide segregation and defect-mediated recombination.

Purpose of the Study:

To introduce 1,3-diaminopropane dihydroiodide (PDADI) as a surface passivator for wide bandgap perovskite films.
To suppress halide migration and reduce defect densities in PSCs.

Main Methods:

Surface passivation using PDADI on FA$_{0.83}$Cs$_{0.17}$Pb-(I$_{0.6}$Br$_{0.4}$)$_3$ films.
Characterization using photoluminescence (PL), UV-vis spectroscopy, Fourier-transform infrared (FTIR) analysis, and space-charge-limited current (SCLC) measurements.
Fabrication and testing of PSCs to evaluate performance metrics.

Main Results:

PDADI significantly reduced light-induced phase segregation and PL peak shift.
FTIR analysis confirmed PDADI's interaction with undercoordinated Pb$^{2+}$ and compensation of halide vacancies.
PDADI passivation improved PSC power conversion efficiency from 14.11% to 16.54%, increased open-circuit voltage, and enhanced fill factor.
Reduced J-V hysteresis from 9.6% to 3.6% indicated improved charge extraction and ion migration suppression.

Conclusions:

PDADI effectively passivates wide bandgap mixed halide PSCs by suppressing halide migration and reducing defects.
The dual interaction of PDADI stabilizes the perovskite lattice, enhancing device performance and stability.
PDADI shows potential for advancing PSCs in tandem solar cell technologies.