Photoluminescent Nanofibers for Solid-State Lighting Applications
Davis, L., Han, L., Hoertz, P. G., Guzan, K. A., Mills, K. C., Walls, H. J., ... Magnus-Aryitey, D. (2012, January). Photoluminescent Nanofibers for Solid-State Lighting Applications. Presented at , .
Photoluminescent nanofibers (PLNs) can be formed by combining electrospun polymeric nanofibers and luminescent particles such as quantum dots (QDs). The physical properties of PLNs are dependent upon many different nanoscale parameters associated with the nanofiber, the luminescent particles, and their interactions. By understanding and manipulating these properties, the performance of the resulting optical structure can be tailored for desired end-use applications. For example, the quantum efficiency of QDs in the PLN structure depends upon multiple parameters including QD chemistry, the method of forming the PLN nanocomposites, and preventing agglomeration of the QD particles. This is especially important in solution-based electrospinning environments where some common solvents may have a detrimental effect on the performance of the PLN. With the proper control of these parameters, high quantum efficiencies can be readily obtained for PLNs. Achieving high quantum efficiencies is critical in applications such as solid-state lighting (SSL), where PLNs are an effective secondary conversion material for producing white light. Methods of optimizing the performance of PLNs through nanoscale manipulation of the nanofiber are discussed, along with guidelines for tailoring the performance of nanofibers and QDs for application specific requirements.