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Related Concept Videos

Crown Ethers02:36

Crown Ethers

6.0K
Crown ethers are cyclic polyethers that contain multiple oxygen atoms, usually arranged in a regular pattern. The first crown ether was synthesized by Charles Pederson while working at DuPont in 1967. For this work, Pedersen was co-awarded the 1987 Nobel Prize in Chemistry. Crown ethers are named using the formula x-crown-y, where x is the total number of atoms in the ring and y is the number of ether oxygen atoms. The term 'crown' refers to the crown-like shape that these ether molecules...
6.0K
P-N junction01:11

P-N junction

1.1K
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...
1.1K
Interfacial Electrochemical Methods: Overview01:06

Interfacial Electrochemical Methods: Overview

778
Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current...
778

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Related Experiment Video

Updated: Jan 10, 2026

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

Published on: February 27, 2017

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Crown ether-based interface modification for inverted perovskite solar cells with enhanced efficiency and stability.

Yang Zhang1, Ting Jiang1, Jingquan Zhang1,2

  • 1Institute of New Energy and Low-Carbon Technology & College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China. hao.xia0808@scu.edu.cn.

Chemical Communications (Cambridge, England)
|November 27, 2025
PubMed
Summary

A novel crown ether modifies perovskite solar cells, enhancing efficiency and stability by passivating defects and suppressing ion movement. This breakthrough in materials science offers improved performance for next-generation solar technologies.

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Area of Science:

  • Materials Science
  • Photovoltaics
  • Organic Chemistry

Background:

  • Perovskite solar cells (PSCs) face challenges with interfacial defects and ion migration, limiting their efficiency and long-term stability.
  • Effective interface engineering is crucial for advancing PSC performance.

Purpose of the Study:

  • To introduce dibenzo-18-crown-6 as an interfacial modifier in PSCs.
  • To investigate the role of dibenzo-18-crown-6 in defect passivation and cation migration suppression.

Main Methods:

  • Incorporation of dibenzo-18-crown-6 at the perovskite/electron transport layer interface.
  • Characterization of material properties and device performance.

Main Results:

  • Achieved a high power conversion efficiency (PCE) of 24.19%.
  • Demonstrated excellent device stability.
  • Attributed improvements to defect passivation and suppressed cation migration by the crown ether.

Conclusions:

  • Dibenzo-18-crown-6 is an effective interfacial modifier for perovskite solar cells.
  • The material enhances device performance and stability through defect passivation and reduced ion mobility.