Jove
Visualize
Contact Us

Related Experiment Videos

Space-charge limited photocurrent.

V D Mihailetchi1, J Wildeman, P W M Blom

  • 1Molecular Electronics, Materials Science Centre, University of Groningen, Nijenborgh 4, NL-9747 AG Groningen, The Netherlands.

Physical Review Letters
|May 21, 2005
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Low frequency electric current noise in glioma cell populations.

Journal of materials chemistry. B·2020
Same author

Elimination of charge carrier trapping in diluted semiconductors.

Nature materials·2016
Same author

Diffusion-limited current in organic metal-insulator-metal diodes.

Physical review letters·2013
Same author

Two-dimensional charge transport in disordered organic semiconductors.

Physical review letters·2012
Same author

Unification of trap-limited electron transport in semiconducting polymers.

Nature materials·2012
Same author

Trap-assisted recombination in disordered organic semiconductors.

Physical review letters·2012
Same journal

Erratum: Spectroscopy and Ground-State Transfer of Ultracold Bosonic ^{39}K^{133}Cs Molecules [Phys. Rev. Lett. 135, 203401 (2025)].

Physical review letters·2026
Same journal

Erratum: Lifetime of the ^{2}F_{7/2} Level in Yb^{+} for Spontaneous Emission of Electric Octupole Radiation [Phys. Rev. Lett. 127, 213001 (2021)].

Physical review letters·2026
Same journal

Laser-Plasma Based Seeded Free Electron Laser in the High-Gain Regime.

Physical review letters·2026
Same journal

Parent Hamiltonians for Stabilizer Quantum Many-Body Scars.

Physical review letters·2026
Same journal

Properties of Heavy Cosmic Nuclei Phosphorus, Chlorine, Argon, Potassium, and Calcium: Results from the Alpha Magnetic Spectrometer.

Physical review letters·2026
Same journal

Role of Spin-Isospin Symmetries in Nuclear β-Decays.

Physical review letters·2026
See all related articles
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

Researchers observed the fundamental electrostatic limit for photocurrent in polymer-fullerene blends. This space-charge limit impacts semiconductor performance at high light intensities, showing specific voltage and light intensity dependencies.

Area of Science:

  • Materials Science
  • Solid-State Physics
  • Organic Electronics

Background:

  • The Goodman and Rose theory (1971) predicted a fundamental electrostatic limit for photocurrent in semiconductors under high light intensities.
  • Conjugated polymer-fullerene blends serve as an excellent model system for experimentally investigating this space-charge limit.
  • These blends exhibit unbalanced charge transport, extended charge carrier lifetimes, high charge generation efficiencies, and low mobility for the slowest charge carrier.

Purpose of the Study:

  • To experimentally observe and characterize the space-charge limit of photocurrent in conjugated polymer-fullerene blends.
  • To validate the theoretical predictions of electrostatic limits on photocurrent at high light intensities.

Main Methods:

  • Utilizing blends of conjugated polymers and fullerenes as a model system.

Related Experiment Videos

  • Conducting experimental measurements of photocurrent under varying light intensities and voltages.
  • Analyzing the photocurrent behavior to identify characteristic dependencies.

    • Main Results:

    • Experimental photocurrents demonstrated characteristics consistent with a space-charge limited photocurrent.
    • Observed a one-half power dependence of photocurrent on voltage.
    • Identified a three-quarter power dependence of photocurrent on light intensity.
    • Found a one-half power scaling of the voltage at which photocurrent saturates with increasing light intensity.

    Conclusions:

    • The experimental results confirm the existence of a space-charge limited photocurrent in polymer-fullerene blends.
    • The observed power-law dependencies validate the theoretical predictions for electrostatic limits in such systems.
    • Polymer-fullerene blends are suitable for studying fundamental charge transport phenomena in organic semiconductors.