Effect of proton irradiation on electrical properties of a-As2S3

This paper reports the effect of proton irradiation on the electrical properties of a-As2S3 in the temperature range of 323–418 K and frequency range 0.1–100 kHz. The variation of transport property is studied with proton irradiation dose (1 × 1013 ions/cm2 and 1 × 1015 ions/cm2). It has been observed that proton irradiation changes the dc conductivity (σdc), dc activation energy (ΔEdc) and ac conductivity (σac(ω)). The σdc and σac(ω) increases with dose of proton irradiation. The value of frequency exponent (s) decreases with the temperature and irradiation dose. These results are explained in terms of change in density of defect states in these glasses.

Research Highlights
► Study of effect of proton radiation on electrical properties of a-As2S3.
► Proton irradiation changes the dc conductivity, dc activation energy and ac conductivity.
► The value of frequency exponent (s) increases with dose of proton radiation.
► The results are explained in terms of change in density of defects states.