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P-N junction

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: Sep 24, 2025

Key Factors Affecting the Performance of Sb2S3-sensitized Solar Cells During an Sb2S3 Deposition via SbCl3-thiourea Complex Solution-processing

Key Factors Affecting the Performance of Sb2S3-sensitized Solar Cells During an Sb2S3 Deposition via SbCl3-thiourea Complex Solution-processing

Published on: July 16, 2018

Solid state interdigitated Sb₂S₃ based TiO₂ nanotube solar cells.

Pascal Büttner¹, Dirk Döhler¹, Sofia Korenko¹

¹Chemistry of Thin Film Materials, Department of Chemistry and Pharmacy, IZNF, Friedrich-Alexander University of Erlangen-Nürnberg Cauerstr. 3 91058 Erlangen Germany ignacio.minguez@fau.de julien.bachmann@fau.de.

|May 6, 2022

Summary

This summary is machine-generated.

Researchers developed novel titanium dioxide (TiO2) nanotubes on conductive substrates for antimony sulfide (Sb2S3)-sensitized solar cells. This approach significantly enhances photocurrent, doubling the output compared to traditional designs.

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Last Updated: Sep 24, 2025

Key Factors Affecting the Performance of Sb2S3-sensitized Solar Cells During an Sb2S3 Deposition via SbCl3-thiourea Complex Solution-processing

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Published on: November 5, 2014

Electrospinning of Photocatalytic Electrodes for Dye-sensitized Solar Cells

Electrospinning of Photocatalytic Electrodes for Dye-sensitized Solar Cells

Published on: June 28, 2017

Area of Science:

Materials Science
Nanotechnology
Photovoltaics

Background:

Development of efficient and stable materials for next-generation solar cells is crucial.
Extremely thin absorber (ETA) solar cells offer potential for reduced material usage and flexible applications.
Challenges exist in fabricating robust and efficient scaffolds for ETA solar cells.

Purpose of the Study:

To fabricate TiO2 nanotubes as a conductive scaffold for Sb2S3-sensitized ETA solar cells.
To optimize nanotube morphology and Sb2S3 deposition for enhanced photovoltaic performance.
To investigate the impact of nanotube length and absorber thickness on photocurrent generation.

Main Methods:

Fabrication of TiO2 nanotubes via anodization of titanium sputter-coated on ITO substrates.
Formation of a TiO2 blocking layer to ensure crack-free nanotube layers.
Conformal coating of Sb2S3 light absorber using atomic layer deposition (ALD) under inert atmosphere.

Main Results:

Successfully generated crack-free, straight TiO2 nanotubes with tunable dimensions.
Achieved conformal Sb2S3 coating, enabling efficient light absorption.
Demonstrated a significant enhancement in photocurrent, reaching twice that of planar reference structures.

Conclusions:

TiO2 nanotubes provide an effective conductive scaffold for Sb2S3-sensitized ETA solar cells.
ALD facilitates high-quality Sb2S3 deposition, crucial for high absorption coefficients.
Optimized nanotube length and absorber thickness are key to maximizing photocurrent in these novel solar cells.