Room-temperature annealing of radiation-induced defects in InP solar cells

Abstract
Observation of effective room‐temperature annealing of radiation‐induced defects in InP is reported. By maintaining InP solar cells at room temperature (277–295 K), defect annealing in both p‐type and n‐type InP after electron irradiation is found, which results in the recovery of InP solar cell properties. The recovery on InP solar cell properties is found to be due to room‐temperature annealing of radiation‐induced minority‐carrier deep trap in the substrate layer. These results suggest that InP solar cells have better radiation hardness characteristics than Si or GaAs solar cells.

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