Ionizing Radiations (Alpha, Beta, Gamma) Effects on CdS / P-Si Heterojunction Solar Cell for Electrical and Optical Properties

Abstract

The effect of ionizing radiations (α,β,γ) in CdS/p-Si heterojunction solar cells are discussed in this paper. The short-circuit current density parameters before γ irradiation conditions have been improved up to 35 mA/cm 2 and after γ irradiation was 30 mA/cm 2 . The open circuit voltage before γ irradiation was 0.59 and 0.565 V after γ irradiation. The limitations of these devices were discussed by investigating the dependence of electrical and efficiency parameters in function of radiation time. The efficiency of the cell before radiation was equal to (11.2%) whenever, after the impact of both α, β and γ was follows, 4.7, 4.9, and 5.1% respectively. The fill factor before and after γ irradiation was 54.5 and 53 %. Studying and analyzing the cells using the I-V, with the change of time rate of γ radiation played a critical role in reducing the efficiency of solar cells. The campaign was carried out with different doses of a series of solar cells by exposing them to different time. The deterioration parameters of CdS/pSi solar cells by γ radiation led to strongly supports the results of minority carrier lifetime, which clearly showed diminishing minority carrier lifetime with increasing radiation dose.

Understanding of the Experimental Concept of Radiation Absorption of Radioactive Materials

“…The intensity (I) of radiation passing through the absorber is expressed by the exponential law, I = I0 exp(−µx), where I0 is the intensity incident on the tin material (Goiffon et al, 2009), µ is the linear attenuation coefficient at certain energy and x is the thickness of the absorber material (Halim, 2012). In our experiments, the dominant effect that occurs in the attenuation of gamma rays is Compton scattering (El-Amin & Saad, 2017). However, the exponential decline rate assumes that only un-sceptered photons can reach the detector, whereas each Compton scattering event results in a loss of photons (Artiani et al, 2019).…”

Gamma Radiation Effects on the Performance of Mono-Crystalline Solar Cells

“…Photovoltaic solar cells are subjected to radiation similar to those utilized in satellite and space systems when they are operating [3]. In bulk solar cells, exposure to high-intensity radiation is in the form of gamma rays, neutrons, charged particles, etc [4]. This leads to electrical breakdown and radiation flaws, which significantly degrade the electrical properties of silicon solar panels [5].…”