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. 2019 Dec 13;9:19134. doi: 10.1038/s41598-019-55628-3

Figure 4.

Figure 4

Electroforming process of 6 cells collected from the samples with He implantation fluence of (a) 1E14 cm−2, (b) 5E14 cm−2 and (c) 1E15 cm−2. I-V curves of 6 cells collected from the samples with He implantation fluence of (d) 1E14 cm−2, (e) 5E14 cm−2 and (f) 1E15 cm-2 after the electroforming process. The arrows indicate the bias voltage sweeping sequence.