A Boubaker polynomials expansion scheme (BPES)-related protocol for measuring sprayed thin films thermal characteristics

摘要

Measurements of In2S3 and ZnIn2S4 sprayed thin films thermal characteristics have been carried out using the photodetection technique. The thermal conductivity k and diffusivity D were obtained using a new Protocol based oil photothermal signal parameters analysis. Measured values of k and D were respectively, (15.2 +/- 0.85) W m(-1) K (1) and (69.8 +/- 7.1) x 10 (6) m(2)s(-1) for In2S3, (7.2 +/- 0.7) W m (1) K (1) and (32.7 +/- 4.3) x 10 (6) m(2)s(-1) for ZnIn2S4. These values are extremely important since similar compounds are more and more proposed as Cd-free alternative materials for solar cells buffer layers.