Synthesis of a Bi3+-Doped Cs2HfCl6 Double Perovskite with Highly Efficient Blue Light Emission at Room Temperature.
Inorg Chem
; 60(14): 10451-10458, 2021 Jul 19.
Article
em En
| MEDLINE
| ID: mdl-34176258
ABSTRACT
Lead-free perovskites have been widely studied due to their environmental friendliness and high stability. In this study, Bi3+-doped Cs2HfCl6 has been synthesized at room temperature. Different from the emission of the Cs2HfCl6 host (452 nm), Bi3+Cs2HfCl6 can produce a bright blue emission at an excitation wavelength of 350 nm, which is derived from the 3P1 â 1S0 transition of Bi ions and accompanied by the properties of self-trapped excitons. Moreover, 7%Bi3+Cs2HfCl6 shows excellent stability with the photoluminescence quantum yield reaching up to 69.08%. Meanwhile, a light-emitting diode that is close to pure white light has been fabricated by using 7%Bi3+Cs2HfCl6, which has a high color rendering index of 92.5. These results show that Bi3+Cs2HfCl6 would be a potential candidate in the field of inorganic luminescent materials.
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Base de dados:
MEDLINE
Idioma:
En
Revista:
Inorg Chem
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
China