Focus

Solar cells

Progress in photovoltaic technology could soon mean grid parity for solar electricity. In this focus issue we highlight scientific as well as science-policy strategies aimed towards achieving this goal.

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Editorial

Solar energy's path towards competitiveness p173

doi:10.1038/nmat3270


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Commentary

Photonic design principles for ultrahigh-efficiency photovoltaics pp174–177

Albert Polman & Harry A. Atwater

doi:10.1038/nmat3263


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Interview

Solar's best shot pp178–179

Interview with R. Ramesh

doi:10.1038/nmat3261


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