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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: Jan 17, 2026

Flash Infrared Annealing for Perovskite Solar Cell Processing

Flash Infrared Annealing for Perovskite Solar Cell Processing

Published on: February 3, 2021

Back-Contact Perovskite Solar Cells: Progress, Challenges and the Future.

Dominic Blackburn¹, Nathan S Hill², Dumitru Sirbu²

¹Department of Physics and Astronomy, Hicks Building, Hounsfield Road, Sheffield S3 7RH, United Kingdom.

ACS Applied Materials & Interfaces

|September 17, 2025

Summary

This summary is machine-generated.

Back-contact solar cells using perovskite materials offer advantages over planar designs. Microgroove patterning enables efficient scale-up, achieving 12.8% stabilized efficiency in perovskite solar cell modules.

Keywords:

back-contact interdigitated module perovskite photovoltaic scale-up silicon solar-cell

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Published on: March 2, 2021

Area of Science:

Materials Science
Renewable Energy
Semiconductor Physics

Background:

Back-contact solar cells represent a novel device architecture.
This architecture is compatible with both silicon and perovskite semiconductors.
Perovskite back-contact solar cell efficiencies have significantly improved since 2016.

Purpose of the Study:

Highlight the advantages of back-contact solar cells compared to planar designs.
Review recent advancements in perovskite back-contact solar cells.
Explore facile routes for scaling up back-contact solar cell fabrication.

Main Methods:

Utilizing substrates patterned with embossed microgrooves for fabrication.
Developing perovskite solar cell modules with serially connected grooves.
Characterizing device performance and stability.

Main Results:

Demonstrated a facile route for back-contact solar cell scale-up using microgroove patterning.
Achieved stabilized efficiencies of up to 12.8% in perovskite solar cell modules.
Showcased modules composed of hundreds of serially connected grooves.

Conclusions:

Microgroove-patterned substrates offer a promising approach for scaling up back-contact solar cells.
Further research is needed to address challenges for high-volume manufacturing and commercialization.
Back-contact perovskite solar cells show potential for widespread adoption.