Effect of deposition temperature on the structural and optical properties of chemically prepared nanocrystalline lead selenide thin films

• Anayara Begum,
• Amir Hussain and
• Atowar Rahman

Beilstein J. Nanotechnol. 2012, 3, 438–443, doi:10.3762/bjnano.3.50

• crystallite size. The optical absorption spectra of the nanocrystalline PbSe films showed a blue shift, and the optical band gap (Eg) was found to increase from 1.96 to 2.10 eV with the decrease in crystallite size. Keywords: chemical bath deposition; lattice parameter; lead selenide; Nelson–Riley plot

• determined from the intercept of the Nelson–Riley plots. The Nelson–Riley curve is plotted between the calculated “a” for different planes and the error function [19] and the corrected value of “a” is obtained by extrapolating the plot to θ = 90°. A typical Nelson–Riley plot for a PbSe thin film is shown in

• deposition temperature and, hence, crystallite size, indicating the improvement of PbSe thin films. X-ray diffraction patterns of PbSe thin films prepared at different temperatures. Variation of the average crystallite size of PbSe thin films with the deposition temperature. Nelson–Riley plot for PbSe thin