Symposium "Nanophysics and Nanoelectronics", Nizhny Novgorod, March 2013

Simulation of ultraviolet- and soft X-ray-pulse generation as a result of cooperative recombination of excitons in diamond nanocrystals embedded in a polymer film

V. A. Kukushkin

Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod

Abstract: Using numerical simulation, it is shown that the recombination of free excitons photoexcited in diamond nanocrystals embedded in a polymer film can occur in the cooperative mode. It is found that this mode can be implemented despite the fact that diamond is an “indirect” semiconductor. It is shown that the power of the generated radiation at the pulse peak during the cooperative recombination of free excitons can exceed that of the incoherent spontaneous emission of the same initial number of free excitons by more than an order of magnitude. Finally, it is shown that the process under consideration can be used to generate picosecond pulses of ultraviolet and soft X-ray electromagnetic field at a wavelength of 235 nm.

Received: 22.04.2013
Accepted: 30.04.2013

 English version: Semiconductors, 2013, 47:11, 1442–1446

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