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Related Experiment Video

Updated: Dec 24, 2025

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
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Aged sol-gel solution-processed texture tin oxide for high-efficient perovskite solar cells.

Haoyun Xu1, Ziyang Hu1, Yanyan Wang1

  • 1Department of Microelectronic Science and Engineering, Laboratory of Clean Energy Storage and Conversion, School of Physical Science and Technology, Ningbo University, Ningbo 315211, People's Republic of China.

Nanotechnology
|April 9, 2020
PubMed
Summary

Researchers developed a textured tin oxide (SnO2) film for perovskite solar cells (PeSCs). This simple, one-step process enhances light trapping and charge extraction, boosting power conversion efficiency (PCE) to 19%.

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Area of Science:

  • Materials Science
  • Renewable Energy
  • Photovoltaics

Background:

  • Mesoporous perovskite solar cells (PeSCs) show promise for high power conversion efficiencies (PCEs) using inorganic electron transport layers (ETLs).
  • Conventional dual-layer ETLs in PeSCs involve complex processing and high sintering temperatures, hindering scalability and performance.
  • Developing simplified, efficient ETLs is crucial for advancing PeSC technology.

Purpose of the Study:

  • To introduce a novel, simplified processing method for enhancing PeSC performance.
  • To investigate the impact of a textured tin oxide (SnO2) electron transport layer on device efficiency.
  • To improve light management and charge carrier dynamics at the ETL/perovskite interface.

Main Methods:

  • Fabrication of PeSCs utilizing a textured SnO2 film created from a self-aged sol-gel solution.
  • Optimization of the SnO2 film's textured structure by controlling the aging time of the sol-gel precursor.
  • Characterization of the textured SnO2 film's morphology, light trapping capabilities, and interfacial properties.

Main Results:

  • The self-aged sol-gel process yielded a textured SnO2 film with excellent surface coverage and light-trapping properties.
  • The textured SnO2 structure facilitated rapid charge extraction and reduced interfacial recombination losses.
  • The optimized PeSCs achieved a notable power conversion efficiency (PCE) of 19%.

Conclusions:

  • A one-step, solution-processed textured SnO2 film offers a facile and effective strategy for enhancing PeSC performance.
  • This approach bypasses the need for complex composite ETLs and high-temperature processing.
  • The textured SnO2 ETL presents a promising pathway for developing high-efficiency, cost-effective perovskite solar cells.