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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: May 11, 2026

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

Published on: February 27, 2017

Air-Processed Efficient Perovskite Solar Cells With Full Lifecycle Management.

Chuanming Tian¹, Tianhao Wu², Xinliang Zhou¹

¹State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)

|October 26, 2024

Summary

This summary is machine-generated.

Bio-derived chitin polymers enable full lifecycle management for air-processed perovskite solar cells (PSCs). This approach enhances PSC efficiency, stability, and addresses lead recycling for sustainable deployment.

Keywords:

air preparation full lifecycle management perovskite solar cells precursor inks stability

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Last Updated: May 11, 2026

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

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Published on: February 27, 2017

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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Flash Infrared Annealing for Perovskite Solar Cell Processing

Flash Infrared Annealing for Perovskite Solar Cell Processing

Published on: February 3, 2021

Area of Science:

Materials Science
Renewable Energy
Environmental Science

Background:

Perovskite solar cells (PSCs) show high efficiency but face lifecycle challenges for large-scale production.
Current PSCs require careful consideration of preparation, operation, and end-of-life disposal.

Purpose of the Study:

To develop a full lifecycle regulation strategy for air-processed PSCs using bio-derived chitin-based polymers.
To enhance the efficiency, stability, and sustainability of PSCs from fabrication to disposal.

Main Methods:

Utilizing chitin-based polymers to stabilize precursor inks via coordinated and hydrogen bonds.
Employing a two-step deposition process for air-processed, high-crystalline perovskite films.
Investigating closed-loop lead management, including lead leakage suppression and recycling.

Main Results:

Achieved air-processed PSCs with 25.18% power conversion efficiency and high reproducibility.
Demonstrated improved operational stability, retaining 92% efficiency after 32 diurnal cycles.
Successfully investigated lead management strategies for end-of-life devices.

Conclusions:

Chitin-based polymers offer a promising route for full lifecycle regulation of efficient and stable air-processed PSCs.
This work addresses key challenges in PSC sustainability, paving the way for broader adoption.