Spray-On Solar

The video discusses the potential of solar power and the challenges in making it cost-effective and efficient. It highlights the work of Brian Korgel and his team at the University of Texas, who are developing spray-on solar cells as a flexible and cheaper alternative to traditional solar panels. These cells use nanocrystals and can be applied like ink. The current efficiency of these cells is around 3%, but they need to reach 10% for commercial viability. The video concludes with the excitement surrounding this innovative approach to sustainable energy.

What is one of the main challenges in harnessing solar energy effectively?

• Reducing the weight of solar panels

• Balancing cost and efficiency

• Finding enough sunlight

• Building larger solar panels

What innovative method is being developed to create solar cells?

• Spray painting solar cells

• Using wind turbines

• Embedding cells in glass

• Using water-based cells

What is the structure of the spray-on solar cells being developed?

• A thin sheet of aluminum

• A solid block of silicon

• A sandwich with metal contacts and a light-absorbing middle

• A single layer of glass

What is the current efficiency of the spray-on solar cells developed by Korgel's team?

• 5%

• 10%

• 3%

• 1%

What efficiency level is needed for spray-on solar cells to be commercially viable?

• 1%

• 3%

• 5%

• 10%