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Updated: Mar 27, 2026

Developing High Performance GaP/Si Heterojunction Solar Cells

Developing High Performance GaP/Si Heterojunction Solar Cells

Published on: November 16, 2018

Antimony oxide buffer layer for single- and double-junction perovskite-based solar cells.

Biao Shi^1,2,3,4,5, Zetong Sunli^1,2,3,4,5, Pengfei Liu^1,2,3,4,5

¹Institute of Photoelectronic Thin Film Devices and Technology, Renewable Energy Conversion and Storage Center, State Key Laboratory of Photovoltaic Materials and Cells, Nankai University, Tianjin, P. R. China.

Nature Communications

|March 26, 2026

Summary

This summary is machine-generated.

Antimony oxide replaces tin oxide as a buffer layer in perovskite/silicon tandem solar cells, improving efficiency and reducing optical losses. This advancement demonstrates scalable, high-performance solar cell technology.

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Published on: July 16, 2018

Area of Science:

Materials Science
Renewable Energy
Photovoltaics

Background:

Atomic layer-deposited tin oxide is an effective buffer layer in perovskite/silicon tandem solar cells.
However, tin oxide causes chemical erosion of perovskite, necessitating thicker fullerene layers and increasing optical absorption.

Purpose of the Study:

To integrate thermal evaporated antimony oxide as a replacement for tin oxide in perovskite/silicon tandem solar cells.
To minimize optical losses and prevent perovskite damage by enabling thinner fullerene layers.

Main Methods:

Thermal evaporation of antimony oxide as a buffer layer.
Fabrication and characterization of antimony oxide-based perovskite/silicon tandem solar cells.
Comparison with tin oxide-based devices.

Main Results:

Antimony oxide's amorphous-nanocrystalline structure facilitates ultrafast carrier transport.
Antimony oxide-based cells show improved power conversion efficiency due to enhanced short-circuit current density.
Large-area (64.64 cm²) encapsulated cells achieve 28.16% efficiency (certified 27.70%).

Conclusions:

Antimony oxide is a viable and effective alternative to tin oxide for buffer layers in tandem solar cells.
This approach significantly reduces parasitic optical absorption and improves device performance.
The demonstrated scalability confirms the potential for commercial application.