An immersion lithographic apparatus is provided with an electrode set to remove unwanted droplets of an immersion fluid from a particular surface. A red light emitting element of the plurality of light emitting elements is wire bonded along the longitudinal direction of the package, a green light emitting element and a blue light emitting element are flip-chip bonded with its electrode faced down, and the electrodes are extended to a surface opposite to the light emission surface of the LED lamp while being embedded in the package. The composition for an organic EL element comprises a precursor of a conjugated organic polymer compound for forming at least one luminescent layer, , having a certain color and at least one kind of fluorescent dye for changing the luminescence characteristic of the luminescent layer. Also disclosed are medical devices coated with the disclosed compounds, methods of delivering NO to treatments sites in a subject by utilizing the medical devices and methods of sterilizing surfaces. Once identified, one or more proprietary messages may be exchanged in a secure manner to establish connections with a home electronics device as either a mobile node or a stationary node of the home network. The OLED is subjected to electromagnetic radiation with a spectrum that at least partially overlaps the absorption spectrum of an organic material layer of the OLED.