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Web Date: August 7, 2014

Leaves Inspire Photon Energy Upconversion Material

Materials Science: A cellulose-based material protects light-sensitive dye molecules from oxygen damage and could help boost the efficiency of some solar cells
Department: Science & Technology | Collection: Life Sciences
News Channels: Materials SCENE, Nano SCENE
Keywords: cellulose nanofibers, photovoltaic, solar cell, photocatalysis, upconversion, leaf

A new material that mimics the structure of a leaf helps light-sensitive dyes convert low-energy light into high-energy photons, a process known as upconversion (ACS Nano 2014, DOI: 10.1021/nn502496a). The leaflike nanopaper protects such dyes from oxygen damage, which could help solar cells and photocatalytic devices achieve high efficiencies, the researchers say.

One form of upconversion uses two types of dye molecules, a sensitizer and . . .

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