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Related Concept Videos

P-N junction01:11

P-N junction

A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
The Z-Scheme of Electron Transport in Photosynthesis01:34

The Z-Scheme of Electron Transport in Photosynthesis

The light reactions of photosynthesis assume a linear flow of electrons from water to NADP+. During this process, light energy drives the splitting of water molecules to produce oxygen. However, oxidation of water molecules is a thermodynamically unfavorable reaction and requires a strong oxidizing agent. This is accomplished by the first product of light reactions: oxidized P680 (or P680+), the most powerful oxidizing agent known in biology. The oxidized P680 that acquires an electron from the...

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Related Experiment Video

Updated: May 30, 2026

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation
06:49

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation

Published on: March 2, 2021

Small-molecule solar cells-status and perspectives.

M Riede1, T Mueller, W Tress

  • 1Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr-Strasse 1, 01069 Dresden, Germany.

Nanotechnology
|August 12, 2011
PubMed
Summary
This summary is machine-generated.

Small molecule organic solar cells have advanced significantly. Future improvements focus on increasing open circuit voltage and short circuit current for higher power conversion efficiency.

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Last Updated: May 30, 2026

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation
06:49

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation

Published on: March 2, 2021

Well-aligned Vertically Oriented ZnO Nanorod Arrays and their Application in Inverted Small Molecule Solar Cells
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Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer

Published on: January 10, 2017

Area of Science:

  • Materials Science
  • Renewable Energy

Background:

  • Organic solar cells (OSCs) based on small molecules have seen substantial development since their inception.
  • Key advancements have led to current state-of-the-art device performance.

Purpose of the Study:

  • To review the current status and progress of small molecule organic solar cells.
  • To discuss strategies for enhancing power conversion efficiency (PCE).

Main Methods:

  • Highlighting historical development steps of small molecule OSCs.
  • Analyzing theoretical limitations and potential improvements for PCE.

Main Results:

  • Current state-of-the-art small molecule organic solar cells show promising performance.
  • Theoretical PCE of approximately 15% is achievable with single heterojunctions.

Conclusions:

  • Further improvements in organic solar cells are necessary.
  • Strategies to boost PCE include increasing open circuit voltage (Voc) and short circuit current density (Jsc).
  • Stacked solar cell architectures are required for efficiencies exceeding 15%.