Experimental study and modeling of absorption edge spectra of multisectoral diamond plates with boron

Single-crystal diamond, with its unique combination of electrical properties and optical transparency over a wide spectral range, is considered a promising material for optoelectronic devices. This paper examines the optical characteristics of modern synthesized diamond plates near the fundamental absorption edge. Special software was developed in the LabVIEW graphical programming environment for a detailed analysis of experimental diamond absorption spectra in the ultraviolet region. UV absorption spectra of diamond plates having a wide range of boron doping are described. It was determined that with an increase in the impurity concentration, the phonon-free absorption component increases, and the absorption of LO- and TO-phonons has the greatest effect on the shape of the spectra.

Authors: K. E. Brusina, A. V. Solomnikova, N. S. Telitsyn, D. D. Firsov, V. I. Zubkov

Direction: Physics

Keywords: single-crystal synthetic diamond, absorption spectra, fundamental absorption edge

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