Welcome to our group!
The Solar Energy Materials Research Group is led by Senior Scientist Wladek Walukiewicz (PI) with Staff Scientists Joel Ager (co-PI) and Kin Man Yu (co-PI). Senior Staff Scientist Zuzanna Liliental-Weber is also associated with the program. The group is developing novel materials that address the immediate need for sustainable, clean energy sources. We are currently investigating both Group III-Nitride semiconductors as well as highly-mismatched alloys for a number of energy-generating applications. The following are a few examples:Full-spectrum Solar Cell The newly discovered narrow bandgap of InN Eg~0.7 has extended the spectral range of the InGaN alloy system into the infrared region. That makes InGaN an excellent material for high-efficiency multi-junction (tandem) solar cells. As shown in the picture below, the bandgap of the InGaN alloy matches the solar spectrum (Air Mass 1.5) almost perfectly [1]...more >>
"Multiband" Solar Cell The intermediate band acts as a “stepping stone,” allowing absorption of photons at three different energy levels, corresponding to the three different band gaps. In particular, low-energy photons are captured that would pass through a conventional solar cell...more >>
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News
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InN work makes the top 50 list of APL
Pionieering work on InN by our group, Appl. Phys. Lett. 80(21), 3967-9 (2002), makes the list of "Top 50 Most Cited Papers from 50 Years of Applied Physics ...
Posted Apr 21, 2012 5:34 PM by Kin Yu
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New Nature Materials Paper on Spintronics Materials
Work by Wladek Walukiewicz and Kin Man Yu on spintronics resolved a long-standing controversy regarding ferromagnetism in dilute magnetic semiconductors, February 2012. (news story)
Posted Apr 21, 2012 5:21 PM by Kin Yu
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New patent granted
U.S. Patent No. 8,039,740, "Single P-N junction tandem photovolatic device," by Walukiewicz, Ager and Yu, has been issued, October 2011. (patent)
Posted Apr 21, 2012 5:20 PM by Kin Yu
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Congratulations...
to Alejandro for passing his qualifying exam on April 13th!
Posted Apr 20, 2011 10:36 PM by Marie Mayer
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Everything you always wanted to know about RBS (but were afraid to ask):
Kin Man Yu has made a nice website about his impressive new RBS machine.
Posted Feb 18, 2011 12:32 PM by Lothar Reichertz
Group CalendarSolar Energy Materials Research Group |
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