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Bright solid‐state luminescence of green‐red tunable CdTe@BaCO 3 composite: Synthesis and properties
Author(s) -
Wu Yiwu,
Sun Zishan,
Ye Tong,
Zhang Xinguo,
Yu Bangwei
Publication year - 2020
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.3811
Subject(s) - luminescence , cadmium telluride photovoltaics , composite number , materials science , quantum dot , solid state , optoelectronics , precipitation , colloid , nanotechnology , chemical engineering , composite material , chemistry , physics , meteorology , engineering
Realizing efficient solid‐state luminescence is of great important to expand quantum dots (QDs) application fields. This work reports the preparation of CdTe@BaCO 3 composite by a one‐pot precipitation method. Both steady‐state PL and PL decay characteristics in either solid‐state or colloid solution show no obvious difference, mainly benefited from the effective protection of BaCO 3 on QDs from the external environment. By utilizing green and red CdTe QDs as dual‐color emission centers, precise emitting‐color control from green (0.312, 0.667) to red (0.691, 0.292) could be achieved in CdTe@BaCO 3 composite by adjusting volume ratio of CdTe solution precursor. Our results demonstrate that this composite material shows bright solid‐state luminescence and facile adjustment of the emitting color in QDs‐based composite is feasible, which could offer new path to design color‐tunable luminescent materials for future optoelectronic applications.