Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

The Electrical Double Layer01:30

The Electrical Double Layer

210
In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
210
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

56.3K
Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions. 
56.3K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

32.3K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
32.3K
Formation of Complex Ions03:45

Formation of Complex Ions

27.1K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
27.1K
Metallic Solids02:37

Metallic Solids

21.6K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and...
21.6K
Structure of Amines01:19

Structure of Amines

3.5K
The hybridized nitrogen atom in amines possesses a lone pair of electrons and is bound to three substituents with a bond angle of around 108°, which is less than the tetrahedral angle of 109.5°. However, the C–N–H bond angle is slightly larger at 112°, with a carbon–nitrogen bond length of 147 pm. This carbon–nitrogen bond length of of amines is longer than the carbon–oxygen bond of alcohols (143 pm) but shorter than alkanes’...
3.5K

You might also read

Related Articles

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

Sort by
Same author

Augmenting large language models with clinical knowledge graph for personalized perioperative fluid therapy question answering.

PLOS digital health·2026
Same author

PEPRKD-depression: A knowledge database supporting evidence-based personalized exercise prescription recommendations in depression.

Digital health·2026
Same author

Benchmarking Large Language Models and Prompt Engineering Strategies in Microsatellite Instability Cancers: Evaluation Study.

Journal of medical Internet research·2026
Same author

MSICKB: A Curated Knowledgebase for Exploring Molecular Heterogeneity and Biomarker Prioritization in Microsatellite Instability Cancers.

Computational and structural biotechnology journal·2026
Same author

Interferometric ultra-high resolution 3D imaging through brain sections.

Nature communications·2026
Same author

Frailty as a Predictor of Low-Energy Fractures in Older People with Osteoporosis: A Retrospective Study.

Acta orthopaedica Belgica·2026
Same journal

Quantum simulations of the ballistic motion of a surface adsorbate.

Physical chemistry chemical physics : PCCP·2026
Same journal

Enhancement of triplet-triplet annihilation upconversion in organically modified clay colloids.

Physical chemistry chemical physics : PCCP·2026
Same journal

What is so special about benzene? A comparison of selected carbon and silicon isomers E<sub>6</sub>H<sub>6</sub> (E = C, Si).

Physical chemistry chemical physics : PCCP·2026
Same journal

Synergistic effects of porosity and sulfur doping on hard carbon for superior sodium-ion storage.

Physical chemistry chemical physics : PCCP·2026
Same journal

Force-resolved and recurrence-based identification of dynamical heterogeneity in liquid water.

Physical chemistry chemical physics : PCCP·2026
Same journal

Thermoelectric properties of layered Bi<sub>2</sub>YO<sub>4</sub>Br: a cageless rattler host structure.

Physical chemistry chemical physics : PCCP·2026
See all related articles

Related Experiment Video

Updated: Apr 20, 2026

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
08:12

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

Published on: September 8, 2017

10.3K

Electronic structures at the interface between Au and CH3NH3PbI3.

Xiaoliang Liu1, Chenggong Wang, Lu Lyu

  • 1Hunan Key Laboratory for Super-microstructure and Ultrafast Process, College of Physics and Electronics, Central South University, Changsha, 410083, P. R. China.

Physical Chemistry Chemical Physics : PCCP
|November 20, 2014
PubMed
Summary
This summary is machine-generated.

Investigating the electronic properties of organometal triiodide perovskite (CH3NH3PbI3) interfaces with gold reveals crucial insights into charge transport. This study enhances understanding of perovskite solar cell performance by examining interface energetics and band bending.

More Related Videos

Solution-Processed "Silver-Bismuth-Iodine" Ternary Thin Films for Lead-Free Photovoltaic Absorbers
10:19

Solution-Processed "Silver-Bismuth-Iodine" Ternary Thin Films for Lead-Free Photovoltaic Absorbers

Published on: September 27, 2018

10.3K
Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
08:30

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Published on: March 19, 2017

17.3K

Related Experiment Videos

Last Updated: Apr 20, 2026

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
08:12

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

Published on: September 8, 2017

10.3K
Solution-Processed "Silver-Bismuth-Iodine" Ternary Thin Films for Lead-Free Photovoltaic Absorbers
10:19

Solution-Processed "Silver-Bismuth-Iodine" Ternary Thin Films for Lead-Free Photovoltaic Absorbers

Published on: September 27, 2018

10.3K
Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
08:30

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Published on: March 19, 2017

17.3K

Area of Science:

  • Materials Science
  • Solid-State Physics
  • Photovoltaics

Background:

  • Organometal triiodide perovskites (CH3NH3PbI3) are promising photovoltaic materials.
  • Understanding interface electronic properties is critical for optimizing device performance.

Purpose of the Study:

  • To investigate the electronic properties of interfaces between gold (Au) and CH3NH3PbI3.
  • To elucidate the mechanisms of charge transfer and energy level alignment at these interfaces.

Main Methods:

  • Utilized ultraviolet photoemission spectroscopy (UPS), inverse photoemission spectroscopy (IPES), and X-ray photoemission spectroscopy (XPS).
  • Fabricated CH3NH3PbI3 films on poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS)/indium tin oxide (ITO) substrates using a two-step method.

Main Results:

  • CH3NH3PbI3 exhibits n-type semiconductor behavior with a 1.7 eV band gap and a valence band edge 1.0 eV below the Fermi energy.
  • An interface dipole of 0.1 eV was observed at the CH3NH3PbI3/Au interface.
  • Gold deposition induced upward energy level shifts and band bending in CH3NH3PbI3, promoting hole transport and accumulation at the interface.

Conclusions:

  • The observed band bending and hole accumulation facilitate efficient hole transfer from CH3NH3PbI3 to Au.
  • Reduced energy loss during hole transfer suggests improved charge extraction efficiency.
  • These findings provide fundamental insights for designing efficient perovskite-based electronic devices.