Degradation of AIIIBV/Ge triple junction solar cells irradiated by gamma-rays, electrons and neutrons

Ryabtseva, M.V.; Петров, А. С.; Voevodkin, G. S.; Tapero, Konstantin I.; Vagapova, N. T.; Bankovsky, M.V.

doi:10.1016/j.microrel.2021.114350

Cited by 1 publication

(1 citation statement)

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“…To use solar cells 1 or light‐emitting diodes (LEDs) 2 in space or an environment exposed to high‐energy radiation, it is essential to evaluate the effects of high‐energy radiation on such devices. Both mechanical and biological systems are affected by γ‐rays 3‐5 or high‐energy particles, such as electrons 6‐8 and protons 9‐11 . Solar cells or LED devices operating at high altitudes or in space are not protected by the Earth's atmosphere.…”

Section: Introductionmentioning

confidence: 99%

Electron‐radiation effect on Freon‐gas‐treated CdTe solar cells

Kim

Song

Kim

et al. 2022

Intl J of Energy Research

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Summary In this study, CdTe solar cells were fabricated, with 12%‐13% efficiencies, using CdCl2 dipping and Freon gas treatments and irradiated with a 6‐MeV electron beam of various fluences. The efficiency of the CdCl2‐dipped samples decreased by approximately 61% at a dose of 1 × 1016 e/cm2, while that of the Freon‐gas‐treated samples was reduced by only 43%. The measured external quantum efficiencies indicated that the short‐circuit current density (Jsc) values of the treated devices differed significantly under the electron‐beam irradiation. The Jsc of the CdCl2‐dipped samples decreased from 23.5 to 10.8 mA/cm2, while that of the Freon‐gas‐treated samples decreased from 24.7 to 16.4 mA/cm2. The drift mobility values, derived through time‐of‐flight measurements, decreased by approximately 1000 times in the CdCl2‐dipped device and by ~100 times in the Freon‐gas‐treated device at a dose of 1 × 1016 e/cm2. These results reveal that in electron‐beam‐irradiated devices, the treatment method influences the reduction in Jsc.

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