Electronic transitions of holes bound to boron acceptors in isotopically controlled diamonds

• Published in: Solid state communications Vol. 102; no. 12; pp. 861 - 865
• Main Authors: Kim, Hyunjung, Ramdas, A.K., Rodriguez, S., Anthony, T.R.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01-06-1997; Elsevier
• Subjects: A. semiconductors; C. impurities in semiconductors; Condensed matter: electronic structure, electrical, magnetic, and optical properties; D. electronic states (localized); D. phonons; E. light absorption and reflection; Electron states; Exact sciences and technology; Impurity and defect levels; Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity); Optical constants: refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of bulk materials and thin films; Other nonmetals; Physics; A. semiconductors; C. impurities in semiconductors; D. electronic states (localized); D. phonons; E. light absorption and reflection; Defect states; Density of states; Semiconductor materials; Diamonds; Doped materials; Experimental study; Selection rules; Energy-level transitions; Acceptor center; Boron additions; Excitation spectrum; Energy-level density; Optical reflection; Optical absorption
• ISSN: 0038-1098; 1879-2766
• DOI: 10.1016/S0038-1098(97)00111-7

The excitation spectrum of holes bound to substitutional boron acceptors introduced into a
13C diamond is compared with that of boron acceptors in natural Type IIb diamond. While the two spectra are remarkably alike in their general features, the spectrum of the acceptors in
13C diamond is shifted to higher energies by 0.4–1.5 meV. In addition, the presence of substitutional boron relaxes the selection rule associated with translational symmetry, thus allowing the observation of the one phonon spectrum reflecting the density of states of the optical branch as well as the zone center optical phonon.