MAROKO133 Update ai: New hybrid perovskite increases light efficiency for fast radiation d

📌 MAROKO133 Hot ai: New hybrid perovskite increases light efficiency for fast radi

Researchers at the University of Oklahoma have developed hybrid perovskite materials that rethink how light emission works and could improve fast radiation detectors.

Instead of relying mainly on the inorganic portion of perovskites, the team designed materials that harness the organic component to generate rapid and efficient light under radiation.

Perovskites are crystalline materials defined by a specific atomic structure. They have become central to modern materials science, especially in solar cells and optoelectronics.

Traditionally, researchers have focused on the inorganic framework because it was believed to drive most of the useful properties.

The Oklahoma team challenged that assumption. Led by M S Muhammad, a graduate student in the Department of Chemistry and Biochemistry, the group explored whether the organic portion of hybrid layered perovskites could play a larger functional role.

Their answer was yes. By embedding organic molecules directly into layered halide perovskite structures, the researchers created materials that emit light from the organic component itself when exposed to radiation.

That light emission ranks among record highs for such systems, a key metric in radiation detection.

Organic-inorganic design rethink

“By combining the inorganic and organic components into one hybrid material, we can take advantage of the strengths of each structural part,” Muhammad said.

“Fast radiation detectors need fast scintillation properties, which means we want the light emission to be fast. The organic structural part of these materials can provide that.”

The team incorporated molecules known as stilbenes into custom-designed two-dimensional layered perovskites.

Stilbenes are known for strong light emission. When placed inside the engineered crystal framework, their performance improved significantly.

The result was a fivefold increase in light emission efficiency compared to the organic molecules on their own. That boost suggests the crystal environment enhances how the molecules respond to radiation.

Muhammad’s work stemmed from a simple but fundamental question: Do the interesting properties of perovskites only come from the inorganic portion of the structure?

“A person not familiar with the field may ask why it even matters if the light emission is coming from the organic or inorganic structural part. But it turns out that the light emission properties of inorganic and organic structural parts are quite different,” said Bayram Saparov, Ph.D., a professor in the department and senior author of the study.

Faster light, longer stability

Organic light emission occurs faster than inorganic emission. In applications such as neutron, X-ray, and gamma ray detection, response speed is critical. A detector must convert incoming radiation into light signals almost instantly.

“We want to have fast neutron detectors, fast X-ray detectors, fast gamma ray detectors, and for those applications, organic materials can be used,” Saparov said. “This strategy that Muhammad used led to an increase in light emission efficiency of the organic component up to five times.”

Beyond speed and brightness, the materials also showed strong environmental stability. Many radiation-detecting compounds require protective coatings to prevent degradation.

These hybrid perovskites remained stable for more than a year in open air without encapsulation.

“The performance of Muhammad’s materials is on par with the state-of-the-art fast radiation detectors,” Saparov said.

“What it tells us is that the strategy we demonstrated in this work is effective. With further fine-tuning, we can increase the luminescence efficiency of these hybrid materials, and they can even beat the state-of-the-art.”

The findings suggest that rebalancing the role of organic and inorganic components in perovskites could open new pathways for high-speed radiation sensing technologies. The study was published in the Journal of the American Chemical Society.

🔗 Sumber: interestingengineering.com

📌 MAROKO133 Hot ai: New hybrid perovskite increases light efficiency for fast radi

Researchers at the University of Oklahoma have developed hybrid perovskite materials that rethink how light emission works and could improve fast radiation detectors.

Instead of relying mainly on the inorganic portion of perovskites, the team designed materials that harness the organic component to generate rapid and efficient light under radiation.

Perovskites are crystalline materials defined by a specific atomic structure. They have become central to modern materials science, especially in solar cells and optoelectronics.

Traditionally, researchers have focused on the inorganic framework because it was believed to drive most of the useful properties.

The Oklahoma team challenged that assumption. Led by M S Muhammad, a graduate student in the Department of Chemistry and Biochemistry, the group explored whether the organic portion of hybrid layered perovskites could play a larger functional role.

Their answer was yes. By embedding organic molecules directly into layered halide perovskite structures, the researchers created materials that emit light from the organic component itself when exposed to radiation.

That light emission ranks among record highs for such systems, a key metric in radiation detection.

Organic-inorganic design rethink

“By combining the inorganic and organic components into one hybrid material, we can take advantage of the strengths of each structural part,” Muhammad said.

“Fast radiation detectors need fast scintillation properties, which means we want the light emission to be fast. The organic structural part of these materials can provide that.”

The team incorporated molecules known as stilbenes into custom-designed two-dimensional layered perovskites.

Stilbenes are known for strong light emission. When placed inside the engineered crystal framework, their performance improved significantly.

The result was a fivefold increase in light emission efficiency compared to the organic molecules on their own. That boost suggests the crystal environment enhances how the molecules respond to radiation.

Muhammad’s work stemmed from a simple but fundamental question: Do the interesting properties of perovskites only come from the inorganic portion of the structure?

“A person not familiar with the field may ask why it even matters if the light emission is coming from the organic or inorganic structural part. But it turns out that the light emission properties of inorganic and organic structural parts are quite different,” said Bayram Saparov, Ph.D., a professor in the department and senior author of the study.

Faster light, longer stability

Organic light emission occurs faster than inorganic emission. In applications such as neutron, X-ray, and gamma ray detection, response speed is critical. A detector must convert incoming radiation into light signals almost instantly.

“We want to have fast neutron detectors, fast X-ray detectors, fast gamma ray detectors, and for those applications, organic materials can be used,” Saparov said. “This strategy that Muhammad used led to an increase in light emission efficiency of the organic component up to five times.”

Beyond speed and brightness, the materials also showed strong environmental stability. Many radiation-detecting compounds require protective coatings to prevent degradation.

These hybrid perovskites remained stable for more than a year in open air without encapsulation.

“The performance of Muhammad’s materials is on par with the state-of-the-art fast radiation detectors,” Saparov said.

“What it tells us is that the strategy we demonstrated in this work is effective. With further fine-tuning, we can increase the luminescence efficiency of these hybrid materials, and they can even beat the state-of-the-art.”

The findings suggest that rebalancing the role of organic and inorganic components in perovskites could open new pathways for high-speed radiation sensing technologies. The study was published in the Journal of the American Chemical Society.

🔗 Sumber: interestingengineering.com