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Related Experiment Video

Updated: Jun 12, 2025

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

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Published on: July 18, 2015

Titania-Based Coral-Structured Solar Absorber Coating with Improved Scalability and Durability at High Temperature.

Yifan Guo¹, Kaoru Tsuda², Milad Mohsenzadeh¹

¹ANU HEAT Lab, School of Engineering, The Australian National University, Canberra, 2601, Australia.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)

|September 20, 2024

Summary

A new titania-bonded coral-structured coating enhances solar thermal energy capture. This scalable coating resists delamination and degradation, improving solar absorber durability for concentrating solar thermal systems.

Keywords:

concentrating solar power hierarchical structure materials degradation solar energy harvesting solar energy materials

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Published on: May 4, 2016

Area of Science:

Materials Science
Renewable Energy Technologies

Background:

Hierarchical coral-structured coatings offer high solar absorptance for concentrating solar thermal (CST) systems.
Interfacial delamination and scalability issues hinder industrial adoption of current CST coatings.

Purpose of the Study:

To develop a robust and scalable coral-structured coating for CST systems.
To address interfacial delamination and material complexity challenges in CST coatings.

Main Methods:

Fabrication of a novel coral-structured coating using titania to bond black pigments.
Drone deposition technique for facile and large-scale application.
Long-term aging tests at high temperatures (up to 600°C) for 3000 hours.

Main Results:

The titania-bonded coating effectively mitigates interfacial delamination.
Drone deposition ensures scalability for large solar receivers.
The coating maintains stable solar absorptance after prolonged high-temperature aging, inhibiting cation diffusion.

Conclusions:

The developed titania-bonded coral-structured coating offers a scalable and durable solution for CST applications.
This advancement facilitates improved light-trapping and maintenance strategies in solar energy harvesting.
The coating's stability and facile deposition pave the way for wider industrial implementation of CST technology.