DEVICE AND METHOD FOR LUMINESCENCE ENHANCEMENT BY RESONANT ENERGY TRANSFER FROM AN ABSORPTIVE THIN FILM

摘要

Disclosed are a device and a method for the design and fabrication of the device for enhancing the brightness of luminescent molecules, nanostructures, and thin films. The device includes a mirror, a dielectric medium or spacer, an absorptive layer, and a luminescent layer. The absorptive layer is a continuous thin film of a strongly absorbing organic or inorganic material. The luminescent layer may be a continuous luminescent thin film or an arrangement of isolated luminescent species, e.g., organic or metal-organic dye molecules, semiconductor quantum dots, or other semiconductor nanostructures, supported on top of the absorptive layer.

主权项

1. A device exhibiting enhanced luminescence, comprising:
a mirror coupled overlying a dielectric spacer; an absorptive layer a luminescent layer overlying the dielectric spacer; the absorptive layer having a wavelength of peak absorption and the luminescent layer having an absorption bandwidth, the absorptive layer being configured to re-emit in a bandwidth that overlaps with the absorption bandwidth of the luminescent layer; the dielectric spacer having a thickness of about one-fourth of the wavelength of peak absorption of the absorptive layer divided by the refractive index, forming a critically coupled resonator configured to maximize intensity of luminescence from the luminescent layer.