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Related Concept Videos

Ion Exchange01:17

Ion Exchange

Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...
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...

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Related Experiment Video

Updated: Jun 3, 2026

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation
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Published on: March 2, 2021

Zwitterionic Bioinspired Acceptor-Acceptor (A1-A2) Type Interlayers for Organic Solar Cells.

Wentian Han1, Junjie Wen1, Yongkang Jiang1

  • 1State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China.

Journal of the American Chemical Society
|June 1, 2026
PubMed
Summary

A novel bioinspired zwitterionic polymer, PDITz-PC, enhances organic solar cell (OSC) performance and stability by optimizing electronic properties and interfacial contact. This new interlayer material shows promise for scalable and durable organic photovoltaics.

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Last Updated: Jun 3, 2026

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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
  • Organic Electronics
  • Photovoltaics

Background:

  • Interlayer materials are critical for organic solar cell (OSC) performance, requiring precise electronic matching with active layers and thickness tolerance.
  • Zwitterionic polymers are promising interlayer candidates, but exploration beyond sulfobetaine (SB) and understanding anionic group contributions are limited.

Purpose of the Study:

  • To explore novel zwitterionic interlayer materials beyond sulfobetaine (SB) for organic solar cells (OSCs).
  • To investigate the impact of synergistic side chain and backbone engineering on interlayer properties and device performance.
  • To demonstrate a new bioinspired zwitterionic material for high-efficiency and stable organic photovoltaics.

Main Methods:

  • Engineered a bioinspired zwitterionic polymer (PDITz-PC) with fluorinated phosphatidylcholine-based side chains and an acceptor-acceptor (A1-A2) conjugated backbone.
  • Characterized the material's electronic properties, molecular packing, and interfacial characteristics.
  • Fabricated and tested organic solar cells (OSCs) with the PDITz-PC interlayer across various active layer systems and device areas.

Main Results:

  • PDITz-PC achieved deep frontier molecular orbital energy levels, suppressed parasitic absorption, and reduced hydrophilicity.
  • The interlayer demonstrated strong work function modification, superior electrical properties, and excellent interfacial contact.
  • Organic solar cells (OSCs) with PDITz-PC exhibited high power conversion efficiencies (PCEs) for small and large areas, improved operational stability, and good thickness tolerance (92% PCE retention at 115 nm).

Conclusions:

  • Synchronized side chain and backbone engineering is crucial for developing advanced interlayer materials in organic photovoltaics (OPVs).
  • PDITz-PC offers a strategic route to high-performance, durable, and scalable organic solar cells (OSCs) by enhancing exciton dissociation, charge transport, and reducing recombination.
  • This work highlights the potential of bioinspired zwitterionic materials for next-generation organic electronics.