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Surface Photovoltage: Tailoring Photovoltage Response at SrRuO 3 /SrTiO 3 Heterostructures (Adv. Mater. Interfaces 22/2016)
Author(s) -
Yukawa Ryu,
Yamamoto Susumu,
Akikubo Kazuma,
Takeuchi Kaori,
Ozawa Kenichi,
Kumigashira Hiroshi,
Matsuda Iwao
Publication year - 2016
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201670110
Subject(s) - surface photovoltage , heterojunction , materials science , optoelectronics , oxide , semiconductor , nanotechnology , spectroscopy , physics , quantum mechanics , metallurgy
Regulations of photo‐induced phenomena at metal oxide surfaces are essential in developing highly efficient photocatalysts and novel opto‐electronic devices. Iwano Matsuda and co‐workers demonstrate that the photovoltage and lifetime of photo‐excited carriers at a SrTiO 3 surface drastically change with SrRuO 3 overlayers, in article 1600527. The optical responses at the SrRuO 3 /SrTiO 3 heterojunctions are systematically described in terms of spatially‐varying potential energy induced at the interfaces. These results indicate that optical responses of oxide semiconductor heterostructures are designed by the band alignment scheme and they are tailored by film growth.