| 
      
        | Pb+Se    treatment (mM) | Angle | Intensity | Peak area | Full width at    half maximum
          (FWHM) | Peak height |  
        | PbSe0 | 21.33 | 22.97 | 14.89 | 0.60 | 19.58 |  
        |  | 27.12 | 29.20 | 15.93 | 0.53 | 25.81 |  
        | PbSe0.1 | 21.4 | 22.94 | 24.68 | 0.445 | 20.61 |  
        |  | 27.16 | 50.83 | 21.14 | 0.401 | 48.50 |  
        | PbSe0.5 | 21.29 | 37.93 | 36.82 | 0.44 | 34.60 |  
        |  | 27.09 | 72.41 | 33.37 | 0.43 | 69.08 |  
        | PbSe1.0 | 21.36 | 19.05 | 11.24 | 0.59 | 16.01 |  
        |  | 27.19 | 22.95 | 11.32 | 0.51 | 19.90 |  
        | PbSe2.5 | 21.29 | 30.26 | 43.03 | 0.52 | 27.55 |  
        |  | 27.09 | 58.14 | 27.53 | 0.43 | 55.43 |  
        | PbSe5.0 | 21.47 | 12.74 | 27.06 | 0.66 | 10.59 |  
        |  | 27.21 | 30.41 | 19.77 | 0.46 | 28.27 |  |