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Liap Tat Su, Siva Krishna Karuturi, Jingshan Luo, Lijun Liu, Xinfeng Liu, Jun Guo, Tze Chien Sum, Renren Deng, Hong Jin Fan, Xiaogang Liu and Alfred Iing Yoong Tok Photon Upconversion in Hetero-nanostructured Photoanodes for Enhanced Near-Infrared Light Harvesting Advanced Materials 25

Article first published online: 3 JAN 2013 | DOI: 10.1002/adma.201204353

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A hetero-nanostructured photoanode with enhanced near-infrared light harvesting is developed for photo-electrochemical cells. By spatially coating upconversion nanoparticles and quantum dot photosensitizers onto TiO2 inverse opal, this architecture allows direct irradiation of upconversion nanoparticles to emit visible light that excites quantum dots for charge separation. Electrons are injected into TiO2 with minimal carrier losses due to continuous electron conducting interface.

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