(Feb. 13, 2012) -- Researchers Gangadharan Ajith Kumar, Madhab Pokhrel and Dhiraj K. Sardar in the UTSA Laser and Biophotonics Laboratories have develop the world's most intense infrared-activated, light-emitting phosphor. The discovery will advance the underlying technology of LEDs, lasers and other electronic displays.
Photons or light emitting particles are the focus of the scientific discipline photonics. Phosphors are photons that emit colored light when excited with another color. The efficiency of phosphor light output depends on many material properties. While most phosphors excited by ultraviolet light are inefficient and lose a lot of thermal energy, excitation by infrared light makes phosphors more energy efficient and environmentally safe.
The trio created a unique phosphor that produces more intense light than any other infrared-activated phosphor on record. Kumar now is testing the discovery's application with an LED manufacturing company. Pokhrel, a UTSA Ph.D. student, is researching the material's potential to enhance silicon solar cell efficiency.
Recently, the researchers were honored by the Society of Photographic Instrumentation Engineers (SPIE) with one of four Green Photonics awards. They accepted the award at the SPIE Photonics West conference in San Antonio last month.
"When I heard UTSA's name along with Harvard, Caltech and other German researchers who received SPIE's Green Photonics Award, I was really excited," said Kumar. "It was exciting to see that our research was on that level and we were all on the same stage. We hope this attracts more students to UTSA who are interested in researching photonics."
SPIE, the international society for optics and photonics, was founded in 1955 to advance light-based technologies. The society serves more than 180,000 constituents from 168 countries advances emerging technologies through interdisciplinary information exchange, continuing education, publications, patent precedent, and career and professional growth.
The UTSA Department of Physics and Astronomy offers coursework in semiconductor technology, solid-state physics, theoretical physics, astrophysics, computer visualization, lasers and biophotonics, cosmology and relativity. Additionally, UTSA and the Space Science Division at Southwest Research Institute jointly offer a graduate degree in space physics, giving students firsthand experience in instrument and satellite development.
UTSA prides itself on giving students a well-rounded education. Combining a top-tier academic program with opportunities for personal growth prepares students to compete in a global economy. And that's not all. They learn to be informed and engaged citizens as well. At the heart of that academic program is an award-winning core curriculum.
For four consecutive years, UTSA has received an A-rating from the American Council of Trustees and Alumni for the caliber of its core curriculum. According to ACTA, UTSA requires its students to take six of the seven courses deemed "crucial" to a well-rounded education: composition, literature, U.S. government or history, economics, mathematics and science. Only a handful of other institutions in the U.S. are giving students these tools, which are needed to succeed in careers and the community.
Did you know? UTSA is one of only three Texas institutions and 23 in the United States to receive the highest rating for its core curriculum in the 2014-2015 edition of the ACTA's "What Will They Learn?" report.
This exhibit includes prints by 25 Latino and Latina artists who worked in collaboration with a master printer in the print studio at the UTSA Department of Art and Art History. It runs through Oct. 12.
Downtown Campus Art Gallery, Durango Building Room 1.122, Downtown Campus
This book talk will feature a presentation by the book’s co-editors Anne-Marie Núñez, ELPS associate professor, Sylvia Hurtado, professor at the University of California Los Angeles, and Emily Calderón Galdeano, director of research for Excelencia in Education.
Buena Vista Theater (BV 1.326), Downtown Campus
As part of National Recovery Month, a panel of substance abuse practitioners and members of the recovery community will discuss issues related to substance abuse treatment and recovery.
Durango Building 1.124 (DB 1.124), Downtown Campus
Love of theater, history leads Lee grad to pursue anthropology degree
The University of Texas at San Antonio is dedicated to the advancement of knowledge through research and discovery, teaching and learning, community engagement and public service. As an institution of access and excellence, UTSA embraces multicultural traditions and serves as a center for intellectual and creative resources as well as a catalyst for socioeconomic development and the commercialization of intellectual property - for Texas, the nation and the world.
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