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Updated: Mar 9, 2026

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System
Published on: July 18, 2015
Energy conversion approaches and materials for high-efficiency photovoltaics
Martin A Green1, Stephen P Bremner1
1Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney 2052, Australia.
Photovoltaics are becoming cheaper and more popular. Future solar cells may exceed current efficiency limits, reducing costs further by exploring advanced technologies beyond single-junction designs.
Area of Science:
- Materials Science
- Energy Technology
- Renewable Energy
Background:
- Photovoltaics (PV) costs have decreased significantly in the last five years, driving increased adoption.
- Area-related costs (encapsulation, installation) are becoming a larger fraction of total PV electricity costs.
- Current single-junction solar cells face fundamental efficiency limits (Shockley-Queisser) below 30%.
Conclusions:
- The PV industry is likely to move beyond standard single-junction cells.
- Advanced photovoltaic technologies are crucial for continued cost reduction and increased electricity generation.
- Further research into novel materials and designs is essential for next-generation solar power.
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Power and Energy
Power, defined as the time rate of expending or absorbing energy, is quantified in units called watts (W). The relation between power and energy is mathematically given as