Abstract
Linking absorption with emission, the Roosbroeck–Shockley relation (RSR) expresses a fundamental principle of semiconductor optics. Despite its elementary character, the RSR is hardly advocated since it is commonly understood that the relation holds for intrinsic materials only. However, we demonstrate that the RSR reproduces very well the photoluminescence of p-doped GaAs over the temperature range of 5–300 K. The fitting parameters used, such as energy position and doping-induced band gap shrinkage, satisfactorily coincide with the literature. The presented results show that the RSR can have a much broader impact in semiconductor analysis than generally presumed.The paper is dedicated to our friend and mentor Rand R Biggers (1946–2006)
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