10-05/06 :: May/June 2010

nanotimes News in Brief

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Illinois researchers have developed a more efficient, lower-cost method of manufacturing compound semicon- ductors such as gallium arsenide for many electronic device applications, including solar cells. The research team, from the left: professor Xiuling Li, student Ik Su Chun, postdoctoral researchers Sungjin Jo and Jongseung Yoon, and professor John Rogers. © Liz Ahlberg

A pile of gallium arsenide solar cells manufactured in stacks and then peeled apart layer by layer. They can be integrated into a number of electronic devices. © John Rogers

Bottom: A flexible array of gallium arsenide solar cells. Gallium arsenide and other compound semiconductors are more efficient than the more commonly used silicon. © John Rogers

manufactured in multilayer stacks: light sensors, high-speed transistors and solar cells. The authors also provide a detailed cost comparison.

Jongseung Yoon, Sungjin Jo, Ik Su Chun, Inhwa Jung, Hoon- Sik Kim, Matthew Meitl, Etienne Menard, Xiuling Li, James J. Coleman, Ungyu Paik & John A. Rogers: GaAs photo- voltaics and optoelectronics using releasable multilayer epitaxial assemblies, In: Nature, Vol. 465(2010), Number 7296, May 20, 2010, Pages 329-333, DOI:10.1038/na- ture09054:

http://dx.doi.org/10.1038/nature09054