Combustion light-emitting device and corresponding method of fabrication

A lamp device having:

• light emitting means;
• a housing defining a chamber within which said light emitting means are at least partially arranged, said housing including a transparent body,
• wherein said chamber is adapted to receive a fuel and the lamp is further provided with means for supplying said fuel to said chamber,
• wherein said light emitting means comprise a structure including a catalytic material and defining an orderly series of cavities of submicrometric or nanometric dimensions, said cavities being at a mutual distance, having a respective diameter and having at least one end thereof which opens into said chamber, such that a process of catalytic combustion bring about light emission,
• and wherein at least one of the diameter and the mutual distance of the cavities is selected to prevent spontaneous emission and propagation of infrared radiation from said structure, while allowing spontaneous emission and propagation of visible radiation from the structure, which visible radiation can diffuse out of said chamber through said transparent body, wherein said cavities are arranged according to a grating having a pitch;
• and
• wherein the diameter of the cavities is between 200 nm and 400 nm and the pitch of the grating is between 200 nm and 500 nm.