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Broadband NIR photoelectronic performance for sunlight‐induced photocurrent from (Na YF 4 :Yb‐Er)/Bi OI hybrid films
Author(s) -
Jia Hong,
Chen Zhi,
Chen Ping,
Xu Cheng,
Liu Chang,
Zhao Zhiguo,
Liu Xiaofeng,
Qiu Jianrong
Publication year - 2017
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.14568
Subject(s) - photon upconversion , photocurrent , materials science , composite number , optoelectronics , fabrication , infrared , irradiation , chemical bath deposition , semiconductor , chemical engineering , thin film , nanotechnology , doping , optics , composite material , medicine , alternative medicine , physics , engineering , pathology , nuclear physics
Abstract The fabrication and near‐infrared optoelectronic performance of the (Na YF 4 :Yb‐Er)/Bi OI upconversion phosphor/semiconductor hybrid films are reported. The composite films were fabricated by a simple electro‐deposition and successive ionic layer adsorption and reaction ( SILAR ) method. We observed efficient upconversion emissions in the film of Na YF 4 :Yb‐Er upon irradiation by near‐infrared part of simulated sunlight, and the UC emission is drastically quenched in the composite film (Na YF 4 :Yb‐Er)/Bi OI . More importantly, this composite film displays unusual negative photoresponse to near‐infrared part of simulated sunlight when used in a standard electrochemical cell where the composite film serves as the photoanode. This result may pave the way for potential application of this hybrid films for the development of novel photovoltaic and infrared optoelectronic devices.