InP quantum dots (QDs) have attracted researchers’ interest due to their applicability in quantum dot light-emitting displays (QLED) or biomarkers for detecting cancers or viruses. The surface or interface control of InP QD core/ shell has substantially increased quantum efficiency, with a quantum yield of 100% reached by introducing HF to inhibit oxide generation. In this study, we focused on the control of bandgap energy of quantum dots by changing the Zn/(In+Zn) ratio in the In(Zn)P core. Zinc incorporation can change the photoluminescent light colors of green, yellow, orange, and red. Diluting a solution of as-synthesized QDs by more than 100 times did not show any quenching effects by the Förster resonance energy transfer phenomenon between neighboring QDs.

1. Introduction
2. Experiment
    2.1. Chemicals
    2.2. Synthesis of In(Zn)P@ZnSe@ZnS QDs
    2.3. Characterization
3. Results
4. Discussion
    4.1. Size and volume of QDs
    4.2. Absorptivity (ε1s) and molar concentration of QDs
    4.3. Förster Resonance Energy Transfer (FRET) effects of QDs
5. Conclusions
Conflict of Interest Declaration
Author Information
Acknowledgments
References

• Sang Yeon Lee(Nano-composite Materials Center, Korea Institute of Ceramic Engineering and Technology, 101 Soho-ro Jinju-si Gyeongsangnam-do 52851, Republic of Korea, Department of Information and Communication Eng., Inha University, 100 Inha-ro Michuho-gu, Incheon 22212, Republic of Korea)
• Su Hyun Park(Nano-composite Materials Center, Korea Institute of Ceramic Engineering and Technology, 101 Soho-ro Jinju-si Gyeongsangnam-do 52851, Republic of Korea)
• Gyungsu Byun(Department of Information and Communication Eng., Inha University, 100 Inha-ro Michuho-gu, Incheon 22212, Republic of Korea)
• Chang-Yeoul Kim(Nano-composite Materials Center, Korea Institute of Ceramic Engineering and Technology, 101 Soho-ro Jinju-si Gyeongsangnam-do 52851, Republic of Korea) Corresponding author