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

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

Buried Interfaces in Organic Photocathodes for H<sub>2</sub> Evolution: Fermi-Level Pinning and Recombination.

ACS applied materials & interfaces·2026

Same author

In-Situ Ligand-Induced Chirality Transfer in Emissive CdSe Nanoplatelets.

The journal of physical chemistry letters·2026

Same author

Thermodynamic Limits to Molecular Doping in Conjugated Polymers: A Perspective on Phase Behavior and Miscibility.

Advanced materials (Deerfield Beach, Fla.)·2026

Same author

Structure of Layers Formed by [2-(3,6-Disubstituted-9<i>H</i>-carbazol-9-yl)ethyl]phosphonic Acids on Metal Oxides.

ACS applied materials & interfaces·2026

Same author

Characterization of a pancreatic cancer GWAS signal suggests PDX1 buffers stress in the exocrine pancreas.

medRxiv : the preprint server for health sciences·2026

Same author

Trion Formation Hampers Single Quantum Dot Performance in Silane-Coated FAPbBr<sub>3</sub> Quantum Dots.

Nano letters·2026

Search research articles

Related Experiment Video

Updated: Jan 10, 2026

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

Deposition-Dependent Coverage and Performance of Phosphonic Acid Interface Modifiers in Halide Perovskite

Hannah Contreras¹, Aidan O'Brien¹, Margherita Taddei¹

¹Department of Chemistry, University of Washington, Seattle, Washington 98195, United States.

ACS Applied Materials & Interfaces

|November 26, 2025

Summary

Optimizing phosphonic acid interface modifiers in perovskite solar cells improves performance. Enhanced surface coverage via dip coating, ITO etching, and bisphosphonic acid use boosts carrier lifetimes and device efficiency.

Keywords:

contact engineering interfaces perovskite solar cells phosphonic acid modification self-assembled monolayer

More Related Videos

Flash Infrared Annealing for Perovskite Solar Cell Processing

Flash Infrared Annealing for Perovskite Solar Cell Processing

Published on: February 3, 2021

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

Published on: February 27, 2017

Related Experiment Videos

Last Updated: Jan 10, 2026

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

Flash Infrared Annealing for Perovskite Solar Cell Processing

Flash Infrared Annealing for Perovskite Solar Cell Processing

Published on: February 3, 2021

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

Published on: February 27, 2017

Area of Science:

Materials Science
Surface Chemistry
Photovoltaics

Background:

Interface modifiers are crucial for high-performance perovskite solar cells and LEDs.
Phosphonic acids form self-assembled monolayers, optimizing contact properties.

Purpose of the Study:

Investigate the impact of deposition methods and surface treatments on phosphonic acid modifiers.
Enhance perovskite solar cell performance by optimizing interface engineering.

Main Methods:

Compared spin coating vs. prolonged dip coating for phosphonic acid deposition.
Utilized HCl/FeCl3 etching for indium tin oxide (ITO) surface treatment.
Employed ultraviolet photoelectron spectroscopy (UPS) and X-ray photoelectron spectroscopy (XPS) for surface analysis.

Main Results:

Optimized protocols increased carrier lifetimes and quasi-Fermi level splitting.
Phosphonic acid modification increased effective work function and showed carbazole group photoemission.
Higher phosphonic acid coverage correlated with longer carrier lifetimes and improved device efficiency.

Conclusions:

Surface modification strategies significantly impact perovskite film properties and device performance.
ITO etching, dip coating, and bisphosphonic acid use collectively enhance surface coverage, carrier lifetime, and efficiency.
Contact properties critically control recombination rates and power conversion efficiencies in perovskite devices.