Optical and electrical properties of Pbs+In thin films subjected to thermal processing

Parra, Rafael; George, P.J.; Sánchez, Gabriela; Baños, L.; Nair, P. K.

doi:10.1016/s0022-3697(99)00346-7

Cited by 10 publications

(1 citation statement)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the works dealing with the thermal stability of lead sulfide nanoparticles in air, the investigations have been carried out in the range of temperatures below 350 ° C [6]. For lead sulfide films, the maximum annealing temperature does not exceed 200 ° C in air [7,8] and 400 ° C in an inert atmosphere [9]. This paper reports on the first experimental results of the investigation into the thermal stability of the structure and optical properties of the lead sulfide nanocrystalline films at temperatures up to 500 ° C. …”

Section: Introductionmentioning

confidence: 99%

Thermal stability of lead sulfide nanocrystalline films

2009

View full text Add to dashboard Cite

Thermally stable nanocrystalline films of lead sulfide PbS were prepared using the chemical deposition method. The thickness of the films measured by interferometry was approximately equal to 100 nm, and the average particle size determined from the broadening of the X-ray diffraction reflections was approximately 80 nm. X-ray diffraction analysis revealed that annealing of the film at a temperature of 350 ° C in air results in the formation of a protective oxide sulfate phase of the composition PbO · PbSO 4 on the surface of the film. It was established that the oxide sulfate phase prevents a further oxidation of the film and serves as an inhibitor of the growth of PbS nanoparticles upon heating up to a temperature of 500 ° C. The factors responsible for the high thermal stability of the sizes of nanoparticles and the optical properties of the PbS nanocrystalline film were discussed.

show abstract