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Thermal degradation effects in InP (1988)

Sartorius, B. ; Schlak, M. ; Rosenzweig, M. ; [et al.]

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 63 (1988), S. 4677-4682

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: Thermal degradation in InP has been regarded to be equivalent to surface deformation. By means of luminescence microscopy we discovered a much larger scale of degradation effects. Crystallographic defects of several geometrical characteristics have been observed although the surfaces seemed to be perfectly smooth. The standard methods of protection against degradation used in liquid phase epitaxy turned out to be unreliable concerning the invisible degradation effects. We propose a model which describes the evolution of degradation starting with invisible crystallographic defects. An extreme loss of phosphorus concentrated around dislocations causes local melting representing the final and visible stage of degradation. We suppose that P vacancies which have never been noticed before are responsible for inhomogeneities affecting processing and the reliability of optoelectronic devices.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.340122

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