Decay behaviour of high-excitation luminescence in GaP:N. I. Model for the decay of two coexisting phases

✍ Scribed by H. Weinert

• Publisher: John Wiley and Sons
• Year: 1983
• Tongue: English
• Weight: 611 KB
• Volume: 116
• Category: Article
• ISSN: 0370-1972
• DOI: 10.1002/pssb.2221160213

✦ Synopsis

Abstract

The time behaviour of the radiative recombination of nitrogen‐doped GaP is investigated at pulsed intense optical excitations and low temperatures (T = 2 and 27 K). The decay behaviour of the luminescence intensities corresponding to the electron–hole liquid (EHL) and the coexisting lowdensity phase (LDP) is found for all nitrogen concentrations (n~N~ = 2 × 10^17^ to 2.9 × 10^18^ cm^−3^) to be nonexponential. It is interpreted as a consequence of interactions between both coexisting phases. A model is introduced where the EHL is fed by the LDP continuously. It describes the observed decay of the luminescence very well, even for different nitrogen concentrations and different excitation intensities.