Abstract
The sensitization effect of co-doping luminescent center ions with energy donors to enhance luminous efficiency and increase the coefficient has been widely considered in various aspects, particularly in the area of near-infrared optical communication. In this study, it is claimed for the first time that both the Bi0/Bi1+ centers and Bi3+ active ions can efficiently absorb pumping energy and improve the luminescence of Nd3+ ions for green and NIR emissions, respectively. In addition, the Judd–Ofelt (J–O) intensity parameters and the radiation characteristics of Nd3+ ions within the NIR region are also discussed based on the J–O theory. Hence, Bi/Nd coped multicomponent oxide glasses have an application potential within the NIR biological communication window.
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