In two separate studies, researchers present novel methods that enable the fabrication of high-performance perovskite-silicon tandem solar cells with power conversion efficiencies exceeding 30%. Silicon solar cells - the most commonly deployed photovoltaic (PV) technology - are rapidly approaching their theoretical power conversion efficiency (PCE) limit of 29%. One way to increase the efficiency of a solar cell is to optimize the spectrum of sunlight for conversion into energy.
This can be done by stacking two or more interconnected photoactive materials into a singular device, improving the harvesting of solar energy. Combining perovskite and silicon solar cells into a tandem device could provide a promising path toward high-performance PVs.
Here, in two separate studies, researchers present different strategies for developing perovskite-silicon tandem solar cells with a PCE exceeding 30%. "Overcoming this threshold provides confidence that high-performance, low-cost PVs can be brought to the market," write Stefaan De Wolf and Erkan Aydin in a related Perspective.
In one study, Xin Yu Chin and colleagues show that the uniform deposition of the perovskite top cell on a silicon bottom cell featuring micrometric pyramids - the industry standard configuration - can facilitate high photocurrents in tandem solar cells.
Chin et al. demonstrate that using phosphonic acid additives during the processing sequence of the cells not only improved the perovskite crystallization process, but also helped to alleviate recombination losses.
In a proof-of-concept, the authors fabricated a device with an active area of 1.17 square centimeters that achieved a certified PCE of 31.2%. Taking a different approach, Silvia Mariotti and colleagues show that using an ionic liquid - piperazinium iodide - improved band alignment and enhanced charge extraction at the interface of a trihalide perovskite and the electron-transport layer by creating a positive dipole. Using this modification, Mariotti et al. developed a perovskite-silicon tandem solar cell that demonstrated an impressive open circuit voltage of up to 2.0 volts and a certified PCE of up to 32.5%.
Research Report:Interface passivation for 31.25%-efficient perovskite/silicon tandem solar cells
Artificial Intelligence Analysis
Defense Industry Analyst:
The Defense Industry Analyst would find this article relevant as it provides insight into the development of a more efficient solar technology. The article discusses the combination of perovskite and silicon solar cells into a tandem device, which is a promising path towards high performance photovoltaic (PV) technology. The two studies presented in the article present different strategies for developing perovskite silicon tandem solar cells with a PCE exceeding 30 percent, making them a viable option for the defense industry. The primary audience for this article would be Defense Industry Analysts looking to gain an understanding of the potential of this technology and how it could be applied to defense applications.
Stock Market Analyst:
The Stock Market Analyst would find this article relevant due to the potential for companies in the space and defense industry to benefit from the advances in solar technology discussed in the article. The two studies presented in the article demonstrate different methods of achieving efficiencies of over 30 percent, making these technologies an attractive investment opportunity for the stock market. The primary audience for this article would be Stock Market Analysts looking to invest in companies that can capitalize on the potential of this technology.
General Industry Analyst:
The General Industry Analyst would find this article relevant as it provides a comprehensive overview of the advances in solar technology discussed in the article. The two studies presented in the article demonstrate different strategies for developing perovskite silicon tandem solar cells with a PCE exceeding 30 percent, making them a viable option for a variety of industries. The primary audience for this article would be General Industry Analysts looking to gain an understanding of the potential of this technology and how it could be applied to different sectors.
Analyst Summary
:Over the past 25 years, the space and defense industry has seen significant advances in solar technology. In two separate studies, researchers present novel methods that enable the fabrication of high performance perovskite silicon tandem solar cells with power conversion efficiencies exceeding 30 percent. These tandem solar cells are created by combining perovskite and silicon solar cells into a singular device, which is a promising path towards high performance photovoltaic (PV) technology. The two studies present different strategies for developing perovskite silicon tandem solar cells with a PCE exceeding 30 percent, making them a viable option for the defense industry, the stock market, and a variety of industries. The potential for companies in the space and defense industry to benefit from the advances in solar technology discussed in the article make it an attractive investment opportunity.Investigative
Question:
- 1. What are the potential applications for these high performance perovskite silicon cells?
- 2. What are the limitations of this technology?
- 3.
What are the environmental implications of this technology?4. What are the cost implications of using this technology?
5. How could this technology be scaled up for larger applications?
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