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Synthesis of Highly Luminescent InP/ZnS Quantum Dots with Suppressed Thermal Quenching
| Content Provider | MDPI |
|---|---|
| Author | Lian, Linyuan Li, Youyou Zhang, Daoli Zhang, Jianbing |
| Copyright Year | 2021 |
| Description | InP quantum dots (QDs) are promising down-conversion phosphors for white light LEDs. However, the mainstream InP QDs synthesis uses expensive phosphorus source. Here, economic, in situ-generated $PH_{3}$ is used to synthesize InP QDs and a two-step coating of ZnS shells is developed to prepare highly luminescent InP/ZnS/ZnS QDs. The QDs show a photoluminescence quantum yield as high as 78.5%. The emission can be tuned by adjusting the halide precursor and yellow emissive InP/ZnS/ZnS QDs are prepared by judiciously controlling the synthetic conditions. The yellow QDs show suppressed thermal quenching and retain >90% room temperature PL intensity at 150 °C for the growth solution. Additionally, the PL spectrum matches with the eye sensitivity function, resulting in efficient InP QD white light LEDs. |
| Starting Page | 581 |
| e-ISSN | 20796412 |
| DOI | 10.3390/coatings11050581 |
| Journal | Coatings |
| Issue Number | 5 |
| Volume Number | 11 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-05-17 |
| Access Restriction | Open |
| Subject Keyword | Coatings Quantum Science and Technology Inp Quantum Dots Core/shell Inp/zns Thermal Quenching |
| Content Type | Text |
| Resource Type | Article |
