AI Article Synopsis
- The study examines how lead halide perovskite solar cells (PSCs) with different grain sizes respond to proton-beam irradiation to gauge their durability against space radiation.
- The research employs various techniques like scanning electron microscopy and photoluminescence to analyze the impact of radiation on the grain structure, crystal structure, and carrier lifetime of perovskite layers.
- Findings indicate that proton irradiation minimally affects the grain and crystal structures, but there is a notable decrease in carrier lifetime beyond a certain radiation threshold, highlighting the importance of grain structure in PSCs' radiation tolerance.
Article Abstract
Lead halide perovskite single layers with three grain sizes are subjected to proton-beam irradiation in order to assess the durability and radiation tolerance of perovskite solar cells (PSCs) against space radiation. Proton-beam irradiation is chosen because proton beams significantly affect solar cell performance in the space environment. We evaluate the effects of proton beams by focusing on the grain structure, crystal structure, and carrier lifetime of a perovskite single layer by using scanning electron microscopy, X-ray diffraction, photoluminescence (PL) spectra, and time-resolved PL (TRPL). The results show that proton irradiation does not significantly affect the grain structure and crystal structure of perovskite layer; the TRPL results show that the carrier lifetime inside the grain is constant up to a fluence of 1 × 10 p/cm and decreases significantly at a fluence of 1 × 10 p/cm. Proton-beam radiation tolerance of the grain inside the perovskite layer is dominant in the radiation tolerance of PSCs.
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| http://dx.doi.org/10.1021/acs.jpclett.9b02665 | DOI Listing |
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