Energy transfer into and out of manganese in the electroluminescence of ZnS: Mn and ZnSe: Mn

Structure and Luminescence of 2D Dilute Magnetic Semiconductors: Cd1-xMnxSe·L0.5 (L = Diamines)

“…In the excitation spectrum (Figure a, curve 3), the narrow excitation peak at 3.41 eV (364 nm) is consistent with the 2D exciton emission peak in CdSe· hda 0.5 (curve 2), indicating that the Mn 2+ emission is driven by the 2D exciton ground-state transition of [CdSe] monolayer. The Mn 2+ emission intensity is 2 orders of magnitude greater than that of 2D exciton at 362 nm, which shows that Mn 2+ is a high-effective acceptor for 2D exciton ground-state transition energy . Compared with that of L = en (7.2), the emission intensity increases 28 times for L = hda (201), which shows the luminescence-enhancement effect and implies that the long period in c direction is more favor for the enhancement of Mn 2+ -related emission, which was previously found in Zn 1 - x Mn x Se·L 0.5…”

Novel and stable Mn2+@Bi2S3quantum dots–glass system with giant magneto optical Faraday rotations

“…It is reported that the efficient energy transfer from the semiconductor host-lattice to the Mn 2+ dopant is possible. 42 However, the decrease of the virgin semiconductor related emission is not only due to energy transfer to Mn 2+ but also due to the introduction of the non-radiative quenching centres, which are developed during synthesis, along with the Mn 2+ precursor. This may induce defects in the quantum dots which ultimately result in efficient quenching states on the surface.…”

Integrated light in direct excitation and energy transfer luminescence

“…It is shown in the paper, that total integrated light is proportional to the pulse length for direct excitation as well as energy transfer luminescence. From the experiment, it exhibits that, for short exciting pulses, the integrated light is not proportional to the excitation pulse length 24,34 . There is some excess in the region of short pulses.…”