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Photon Upconversion in Hetero‐nanostructured Photoanodes for Enhanced Near‐Infrared Light Harvesting
Author(s) -
Su Liap Tat,
Karuturi Siva Krishna,
Luo Jingshan,
Liu Lijun,
Liu Xinfeng,
Guo Jun,
Sum Tze Chien,
Deng Renren,
Fan Hong Jin,
Liu Xiaogang,
Tok Alfred Iing Yoong
Publication year - 2013
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201204353
Subject(s) - photon upconversion , materials science , optoelectronics , quantum dot , infrared , nanoparticle , visible spectrum , electron , photocatalysis , nanotechnology , irradiation , photon , coating , optics , doping , biochemistry , chemistry , physics , quantum mechanics , nuclear physics , catalysis
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 TiO 2 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 TiO 2 with minimal carrier losses due to continuous electron conducting interface.