Figure 3. Photoluminescence (PL) spectra of undoped CdS (A) and Co-doped CdS with doping concentration 2% (B) and 4% (C)

From

A Systematic Study of the Optical Properties of Co-, and Ni- Doped Colloidal Cadmium Sulphide Nanoparticles

P. Bhambhani, P. A. Alvi

Journal of Optoelectronics Engineering. 2016, 4(1), 11-16 doi:10.12691/joe-4-1-3