TY  - JOUR
TI  - Spectroscopic investigation of defect-state emission in CdSe quantum dots
AB  - CdSe quantum dots are the most studied Cd-based quantum dots with their high quantum yield, high photostability, narrow
emission band, and easy synthesis procedure. They are frequently used to develop light emitting diode (LED) due to their unique photophysical properties; however, their narrow emission band causes a challenge to design white LEDs because white light emission requires
emission in multiple wavelengths with broad emission bands. Here in this study, we developed CdSe quantum dots with a narrow bandedge emission band and broad defect-state emission band through a modified two-phase synthesis method. Our results revealed that
defect-state emission is directly linked to the surface of quantum dots and can be excited through exciting surfactant around the quantum dot. The effect of surfactant on emission properties of CdSe quantum dots diminished upon growing a shell around CdSe quantum
dots; as a result, surface-dependent defect-state emission cannot be observed in gradient heterogeneous alloyed $CdS_x
Se_{1-x}$ quantum dots.
AU  - Ünlü, Caner
AU  - Guleroglu, Gulhan
DO  - 10.3906/kim-2101-66
PY  - 2021
JO  - Turkish Journal of Chemistry
VL  - 45
IS  - 3
SN  - 1300-0527
SP  - 520
EP  - 527
DB  - TRDizin
UR  - http://search/yayin/detay/526036
ER  -