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Integrity and quality of assessments on the online platform should be upheld to ensure that it supports student learning as well as the efficacy of teaching because in the end it measures the reputation of an institution. How institutions have traversed such domains remains a grey area. This paper provides anecdotal insights into how staff from a South African university have taken steps to mitigate against cheating to preserve integrity and quality of assessments. For this, a carefully designed survey with questions pertaining to integrity and quality of assessments were designed and administered to 11 physics staff members of the university. Results of the survey were presented and discussed both quantitatively and qualitatively. Results reveal that staff are serious about the integrity of assessments and have employed various techniques to combat it, but full proof integrity of assessments cannot be fully arrested on the online platform with proctoring and other strategic measures in place.

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A series of CaMoO4-BO33−:Eu3+ phosphors with different concentrations of Eu3+ (0, 0.5, 1.0, 1.5, 2.0, and 2.5 mol. %) were prepared using the solid-state reaction method. The crystal structure, particle morphology, and photoluminescence (PL) were characterized by x-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectrometry, ultraviolet–vis diffuse reflectance, and PL spectroscopy. The XRD patterns showed that CaMoO4−BO33−:Eu3+ phosphor consisted of a pure phase with a tetragonal structure. The introduction of BO33− ions did not affect the crystal structure of the CaMoO4:Eu3+ phosphors, but it slightly influenced the particle morphology and the peak intensity of the red PL from Eu3+. As confirmed from the FE-SEM data, the shapes and sizes of the particles were modified by the incorporation of BO33− ions. The bandgap was influenced by the incorporation of BiO33− and Eu3+ as confirmed from the diffuse reflectance data. The PL intensity was dependent on the concentration of the Eu3+, and the red emission due to the f → f transitions of Eu3+ was enhanced considerably by the incorporation of BO33− ions when the samples were excited at the wavelength of 395 nm using a monochromatized xenon lamp. The effect of BO33− ions on the PL intensity is discussed.

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