Quantum dot light enhancement substrate and lighting device including same
摘要
說(shuō)明書(shū)
One example of a method for synthesizing quantum dots includes colloidal synthesis techniques as described above, typically exhibit highly saturated color emission with narrow full-width-at-half-maximums (FWHM), preferably less than 30 nm. The number of accessible emission colors is virtually unlimited, due to the fact that the QD peak emission can be tailored by selecting the appropriate material system and size of the nanoparticles. Colloidally synthesized red, green and blue Cd-based QDs can routinely achieve solution quantum yields on the order of 70-80%, with peak emission wavelength reproducibility within +/?2% and FWHM less than 30 nm.
In certain embodiments, QDs include a core comprising InP. Preferably such QDs have a 50% solution quantum yields or higher. In certain embodiments, such QDs are prepared by a colloidal synthesis process. An example of a process for preparing QDs including a core comprising InP or other III-V semiconductor materials is described in U.S. Patent Application No. 60/866,822 of Clough, et al., filed 21 Nov. 2006, the disclosure of which is hereby incorporated herein by reference in its entirety).
InP/ZnSeS QDs can achieve solution quantum yields up to 70%, with peak emission wavelength reproducibility within +/?2% and FWHM less than 60 nm, examples of which are tabulated below in Table 3.
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