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Related Concept Videos

P-N junction01:11

P-N junction

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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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Updated: May 5, 2026

Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light
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Amide-linked hole transporting material for solid-state dye-sensitised solar cells.

Amy Neild1, Owen Woodford1, Pablo Docampo2

  • 1Energy Materials Laboratory, School of Natural and Environmental Sciences, Newcastle University Chemistry Bedson Building Newcastle upon Tyne NE1 7RU UK elizabeth.gibson@newcastle.ac.uk.

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|March 4, 2026
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This summary is machine-generated.

Researchers developed a novel amide-based hole transport material for solid-state dye-sensitized solar cells, significantly boosting efficiency. This cost-effective alternative shows promise for future photovoltaic applications.

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Area of Science:

  • Materials Science
  • Photovoltaics
  • Electrochemistry

Background:

  • Solid-state dye-sensitized solar cells (ssDSCs) are a promising photovoltaic technology.
  • Spiro-OMeTAD is the conventional hole-transporting material (HTM) but is expensive.
  • Development of cost-effective HTMs is crucial for widespread adoption of ssDSCs.

Purpose of the Study:

  • To report the first use of an amide-based HTM in ssDSCs.
  • To evaluate the performance of TPABT as an HTM.
  • To investigate the impact of oxidation and light soaking on TPABT performance and device efficiency.

Main Methods:

  • Fabrication of ssDSCs using an amide-based HTM (TPABT).
  • Optimization of TPABT through air oxidation and light soaking.
  • Characterization of solar cell performance (efficiency, J-V curves).
  • Time-resolved spectroscopic studies to analyze charge-transfer and regeneration kinetics.

Main Results:

  • Achieved a significant increase in solar cell efficiency from 0.04% to 2.26% with TPABT.
  • Demonstrated that prolonged air oxidation and light soaking enhance TPABT performance.
  • Spectroscopic studies revealed that oxidation state and additive concentration influence charge-transfer and regeneration kinetics.
  • Observed time-dependent changes in device properties correlating with kinetic alterations.

Conclusions:

  • Amide-based TPABT is a viable, cost-effective alternative HTM for ssDSCs.
  • Careful control of oxidation state and doping is essential for optimizing TPABT performance.
  • This research paves the way for more affordable and efficient emerging photovoltaic technologies.