Publications

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Dynamic Programming

Little has been done in the study of these intriguing questions, and I do not wish to give the impression that any extensive set of ideas exists that could be called a "theory."...

2010 Science 13053 citations

Photoelectrochemical cells

Until now, photovoltaics — the conversion of sunlight to electrical power — has been dominated by solid-state junction devices, often made of silicon. But this dominance is now ...

2001 Nature 12464 citations