Journal
NANOMATERIALS
Volume 8, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/nano8070508
Keywords
light-emitting diodes; quantum dots; stability; color-conversion efficiency; photoluminescence
Categories
Funding
- National Natural Science Foundation of China [51775199, 51735004]
- Natural Science Foundation of Guangdong Province [2014A030312017]
- Science & Technology Program of Guangdong Province [2015B010132002]
- Project of Science and Technology New Star in Zhujiang Guangzhou City [201806010102]
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In this report, a blue anti-transmission film (BATF) has been introduced to improve the color-conversion efficiency (CCE) and the stability of quantum dot (QD) films. The results indicate that the CCE can be increased by as much as 93% using 15 layers of BATFs under the same QD concentration. Therefore, the same CCE can be achieved using BATF-QD hybrid films with a lower QD concentration when compared with standard QD films. The hybrid and QD films with the same CCE of 60% were aged at an environmental temperature of 25 degrees C and with a 10 mA injection current light-emitting diode source. The CCE and luminous efficacy that are gained by the hybrid film increased by 42.8% and 24.5%, respectively, when compared with that gained by the QD film after aging for the same time period of approximately 65 h. In addition, the hybrid film can effectively suppress the red-shift phenomenon of the QD light spectra, as well as an expansion of the full-width at half maximum. Consequently, these BATF-QD hybrid films with excellent optical performance and stability show great potential for illumination and display applications.
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